ANISAKINAE 6 



cuius is absent, and frequently when it is present, there is an 

 anterior caecum springing from the intestine and lying along- 

 side of the oesophagus. A posterior glandular caecum, or 

 occasionally several such caeca, some of which may be directed 

 anteriorly, may also be developed in connection with the 

 ventriculus. Parasitic in the alimentary canal of Vertebrates, 

 the hosts being generally aquatic or fish-eating animals. 



The subfamilies Crossophorinae and Goeziinae were proposed 

 by Baylis (1920, Parasitol., xii, 263) for the genera Crossophorus 

 and Goezia respectively, while the subfamily Heterocheilinae 

 Railliet & Henry, 1912, was restricted to the genera Hetero- 

 cheilus (Lobocephalus) and Typhlophoros. It appears doubtful 

 whether sufficient characters exist to warrant the separation 

 of these subfamilies from the Anisakinae. The genera con- 

 cerned are therefore now referred to the latter subfamily. 

 For the two subfamilies Anisakinae and Heterocheilinae of 

 Railliet & Henry (1912), which we regard as forming a single 

 group, we have preferred to retain the name Anisakinae, 

 with a well-known genus as its type. In any case the name 

 Heterocheilinae falls into synonymy together with that of its 

 type-genus. 



1. Anisakis Dujardin, 1845. 



Syn. Peritrachelius Diesing, 1851 ; ConocepJialus Diesing, 

 1861. 



Lips with dentigerous ridges. Interlabia absent. Oeso- 

 phagus with an oblong or sigmoid ventriculus. No oesopha- 

 geal or intestinal caeca. Spicules sometimes unequal. 



Hab. Stomach and intestine of marine Mammals. 

 Genotype : A. [Ascaris] dussumieri (van Beneden, 1870). 



Dujardin, 1845, Histoire naturelle des Helminthes, Paris, 151 

 (as subgenus) ; Stiles & Hassall, 1899, Rej). Fur Seal Invest., 

 Washington, Part III ; Baylis, 1920, Parasitol., xii, 260. 



2. Raphidasearis Railliet & Henry, 1915. 

 Syn. Hysterothylacium Ward & Magath, 1916. 



Lips without dentigerous ridges. Interlabia present. Oeso- 

 phagus with small ventriculus, from which springs a small 

 posterior caecum. No intestinal caecum. 



Hab. Stomach and intestine of Fishes. 

 Genotype : R. {Ascaris} acus (Bloch, 1779). 



Bloch, 1779, Beschdft. Berl. Ges. Naturf. Fr., iv, 544; 

 Railliet & Henry, 1915, Bull. Soc. Path, exot., Paris, viii, 271 ; 

 Ward& Magath, 1916, Journ. Parasitol, iii, 63; Baylis, 1920, 

 Parasitol., xii, 261. 



