Phylum Nematoda

     Class Adenophorea

        Order Chromadorida

           SubOrder Chromadorina

               SuperFamily Chromadoroidea

                  Family Chromadoridae (Chromadorinae) 

                             Chromadorella 

                                       Chromadorella filiformis  (Bastian, 1865)

                                       Chromadorella pacifica  (Allgen, 1947)

                  Family Chromadoridae (Euchromadorinae) 

                             Euchromadora 

                                       Euchromadora vulgaris  (Bastian, 1865)

                             Graphonema 

                                       Graphonema amokurae  (Ditlevsen, 1921)

                             Steineridora 

                                       Steineridora loricata  (Steiner, 1921)

                  Family Chromadoridae (Hypodontolaiminae) 

                             Spilophorella 

                                       Spilophorella campbelli  (Allgen, 1928)

                  Family Chromadoridae (Spilipherinae) 

                             Spilophora 

                                       Spilophora gracilicauda  De Mann, 1893

                                       Spilophora longiseta  Allgen, 1951

                                       Spilophora tenuicauda  Allgen, 1951

                  Family Comesomatidae (Dorylaimopsinae) 

                             Dorylaimopsis 

                                       Dorylaimopsis hawaiiensis  Allgen, 1951

                  Family Cyatholaimidae (Cyatholaiminae) 

                             Cyatholaimus 

                                       Cyatholaimus gracilis  (Eberth, 1863)

                  Family Cyatholaimidae (Paracanthonchinae) 

                             Acanthonchus (Acanthonchus) 

                                       Acanthonchus (Acanthonchus) californicus  (Allgen, 1947)

                             Paracantholaimus 

                                       Paracantholaimus tenuispiculum  (Allgen, 1951)

                             Paracanthonchus 

                                       Paracanthonchus brachyuris  Allgen, 1951

                                       Paracanthonchus caecus  (Bastian, 1865)

                                       Paracanthonchus hawaiiensis  Allgen, 1951

                                       Paracanthonchus mortenseni  Allgen, 1947

                                       Paracanthonchus pacificus  Allgen, 1951

                  Family Selachinematidae (Choniolaiminae) 

                             Halichoanolaimus 

                                       Halichoanolaimus robustus  (Bastian, 1865)

                  Family Selachinematidae (Selachinematinae) 

                             Demonema 

                                       Demonema rapax  Cobb, 1894

               SuperFamily Desmodoroidea

                  Family Aponchiidae (Aponchiinae) 

                             Aponchium 

                                       Aponchium conicaudatum  Allgen, 1951

                  Family Desmodoridae (Desmodorinae) 

                             Acanthopharyx 

                                       Acanthopharyx brachycapitata  Allgen, 1947

                                       Acanthopharyx merostomacha  (Steiner, 1921)

                             Desmodora 

                                       Desmodora crassa  Allgen, 1951

                             Desmodora (Desmodora) 

                                       Desmodora (Desmodora) californica  Allgen, 1947

                                       Desmodora (Desmodora) scaldensis  De Mann, 1889

                             Desmodora (Pseudochromadora) 

                                       Desmodora (Pseudochromadora) microchaeta  Allgen, 1929

                             Desmodora (Zalonema) 

                                       Desmodora (Zalonema) propinqua  Allgen, 1951

                  Family Desmodoridae (Spiriniinae) 

                             Spirina (Spirina) 

                                       Spirina (Spirina) septentrionalis  (Cobb, 1914)

               SuperFamily Monoposthioidea

                  Family Monoposthiidae (Monoposthiinae)  

                             Monoposhtia 

                                       Monoposhtia pacifica  Allgen, 1951

        Order Enoplida

           SubOrder Enoplina

               SuperFamily Enoploidea

                  Family Anticomidae (Anticominae) 

                             Anticoma 

                                       Anticoma acuminata  (Eberth, 1863)

                             Anticomopsis 

                                       Anticomopsis typica  Micoletzky, 1930

                  Family Enoplidae (Enoplinae) 

                             Enoplus 

                                       Enoplus meridionalis  Steiner, 1921

                  Family Enoplidae (Enoplolaiminae) 

                             Mesacanthion 

                                       Mesacanthion hawaiiense  (Allgen, 1951)

                                       Mesacanthion pacificum  (Allgen, 1947)

                             Oxyonchus 

                                       Oxyonchus stateni  (Allgen, 1930)

                  Family Leptosomatidae (Leptosomatinae) 

                             Leptosomatum 

                                       Leptosomatum bacillatum  (Eberth, 1863)

                  Family Phanodermatidae (Phanodermatinae) 

                             Phanoderma (Phanoderma) 

                                       Phanoderma (Phanoderma) hawaiiense  Allgen, 1951

                                       Phanoderma (Phanoderma) tenuicaudum  Allgen, 1951

                                       Phanoderma (Phanoderma) tuberculatum  (Eberth, 1863)

               SuperFamily Oncholaimoidea

                  Family Enchelidiidae (Enchelidiinae) 

                             Enchelidium 

                                       Enchelidium brevicaudatum  Allgen, 1947

                                       Enchelidium microlaimum  Allgen, 1951

                                       Enchelidium pacificum  Allgen, 1951

                             Polygastrophora 

                                       Polygastrophora hexabulla  (Filipjev, 1918)

                                       Polygastrophora tenuicollis  (Allgen, 1951)

                  Family Enchelidiidae (Eurystomininae) 

                             Eurystomatina 

                                       Eurystomatina ornata  (Eberth, 1863)

                  Family Oncholaimidae (Oncholaimellinae) 

                             Viscosia 

                                       Viscosia glabra  (Bastian, 1865)

                                       Viscosia pacifica

                  Family Oncholaimidae (Oncholaiminae) 

                             Oncholaimus 

                                       Oncholaimus rapax  Kries, 1932

                  Family Oncholaimidae (Pontonematinae) 

                             Pontonema 

                                       Pontonema californicum  Allgen, 1947

                  Family Oxystominidae (Halalaiminae) 

                             Halalaimus (Halalaimus) 

                                       Halalaimus (Halalaimus) gracilis  De Mann, 1888

        Order Monhysterida

           SubOrder Monhysterina

               SuperFamily Axonolaimoidea

                  Family Diplopeltidae (Diplopeltinae) 

                             Diplopeltis 

                                       Diplopeltis cirrhatus  (Eberth, 1863)

                             Onchium 

                                       Onchium hawaiiense  (Allgen, 1951)

                             Southerniella 

                                       Southerniella youngi  Murphy, 1964

               SuperFamily Monhysteroidea

                  Family Xyalidae (Xyalinae) 

                             Daptonema 

                                       Daptonema tenuispiculum  (Ditlevsen, 1918)

                             Steineria 

                                       Steineria sp.

     Class Secernentea

        Order Rhabditida

           SubOrder Cephalobina

               SuperFamily Rhabditoidea

                  Family Cephalobidae (Cephalobinae) 

                             Cephalobus 

                                       Cephalobus marinus  Allgen, 1951

     Class Namata

        Order Camallanida

                  Family Camallanidae 

                             Camallanus 

                                       Camallanus cotti  Fujita, 1927

                             Spirocamallanus 

                                       Spirocamallanus istiblenni  Nobel, 1966