• Cylicostrongylus indicus Gupta & Garg, 1978
• Cylicostrongylus thapari Sood, 1966
• Cylicostrongylus trichiurusi (Srivastava & Gupta, 1978)
• Diaphanocephalus galeatus Rudolphi, 1819
• Diaphanocephalus strongyloides Diesing, 1851 accepted as Diaphanocephalus galeatus Rudolphi, 1819
• Inermiformis inermis (Molin, 1861)
• Inermiformis macrovulvus (Caballero, 1954)
• Kalicephaloides bungari Baylis & Daubney, 1922
• Kalicephaloides minutus Baylis & Daubney, 1922 accepted as Kalicephaloides bungari Baylis & Daubney, 1922
• Kalicephalus agkistrodontis Harwood, 1932
• Kalicephalus amplicervix Jones, 1983
• Kalicephalus appendiculatus Molin, 1861
• Kalicephalus assimilis Wu & Hu, 1938
• Kalicephalus australiensis Jones, 1979
• Kalicephalus bitisi Campana-Rouget & Chabaud, 1950
• Kalicephalus chitwoodi Caballero, 1954
• Kalicephalus chunkinensis Hsu, 1934
• Kalicephalus coronellae Ortlepp, 1923
• Kalicephalus costatus Rudolphi, 1819
• Kalicephalus enygri Kreis, 1940
• Kalicephalus ersiliae Stossich, 1896
• Kalicephalus fimbriatus Ortlepp, 1923
• Kalicephalus fujianensis Tao & Zhao, 1980
• Kalicephalus humilis Caballero, 1938
• Kalicephalus indicus Ortlepp, 1923
• Kalicephalus inermis Molin, 1861 accepted as Inermiformis inermis (Molin, 1861)
• Kalicephalus kalicephalum Stossich, 1899 accepted as Kalicephalus mucronatus Molin, 1861
• Kalicephalus laticaudae Yamaguti, 1935
• Kalicephalus longior Maplestone, 1931
• Kalicephalus macrovulvus Caballero, 1954 accepted as Inermiformis macrovulvus (Caballero, 1954)
• Kalicephalus micrurus Daubney, 1923
• Kalicephalus mucronatus Molin, 1861
• Kalicephalus natrixi Paul & Majumdar, 1994
• Kalicephalus nigeriensis Ortlepp, 1923
• Kalicephalus novae-britanniae Maplestone, 1931
• Kalicephalus obliquus Daubney, 1923
• Kalicephalus parvus Ortlepp, 1923
• Kalicephalus philodryadus Ortlepp, 1923
• Kalicephalus posterovolvus Schad, 1962
• Kalicephalus rectiphilus Harwood, 1932 accepted as Rectiphiloides rectiphilus (Harwood, 1932)
• Kalicephalus schadi Ogden, 1966
• Kalicephalus simus Daubney, 1923
• Kalicephalus sinensis Hsu, 1934
• Kalicephalus subalatus Molin, 1861
• Kalicephalus vallei Stossich, 1895
• Kalicephalus variabilis Schad, 1962 accepted as Variabiliformis variabilis (Schad, 1962)
• Kalicephalus viperae Rudolphi, 1819
• Kalicephalus willeyi Linstow, 1904 accepted as Variabiliformis willeyi (Linstow, 1904)
• Occipitodontus fimbraitus Ortlepp, 1923
• Paracylicostrongylus trichiurusi Srivastava & Gupta, 1978 accepted as Cylicostrongylus trichiurusi (Srivastava & Gupta, 1978)
• Rectiphiloides brachycephalus Maplestone, 1931
• Rectiphiloides rectiphilus (Harwood, 1932)
• Variabiliformis colubri Ortlepp, 1923
• Variabiliformis variabilis (Schad, 1962)
• Variabiliformis willeyi (Linstow, 1904)