220 FILARIOIDEA 



3. Streptocara Railliet, Henry & Sisoff, 1912. 



Syn. Yseria Gedoelst, 1919; Prionostemma Gendre, 1921, 

 e. J). 



Anterior end surrounded by a cuticular collar with denti- 

 culate or festooned border. Five or six pairs of postanal 

 papillae in the male. Spicules very unequal, the longer pro- 

 vided distally with one or two recurrent hooks. 



Hab. Beneath lining of gizzard of Birds (chiefly fish-eating). 

 Genotype : S. [Spiroj^tera] pectinifera (Neumann, 1900). 



Neumann, 1900, Rev. vet., Toulouse, xxv, 513-515; Railliet, 

 Henry & Sisoff, 1912, Compt. rend. Soc. Biol., Paris, Ixxiii, 

 623; Gedoelst, 1919, Compt. rend. Soc. Biol., Paris, Ixxxii, 

 901 ; Gedoelst & Liegeois, 1922, Compt. rend. Soc. Biol., Paris, 

 Ixxxvii, 1237; Travassos, 1920 Ci), Rev. Vet. e Zootech., Rio 

 de Janeiro, 67. 



Travassos has referred this genus, together with Schis- 

 torophus, to a subfamily Schistorophinae Travassos, 1918, 

 within the family Acuariidae. We are in agreement with 

 Railliet (1916) and with Skrjabin (1916) in adopting the view 

 that Schistorophus is more nearly related to the genera included 

 in the family Thelaziidae, while Streptocara, in our view, is 

 referable to the subfamily Acuariinae. 



4. Sciadiocara Skrjabin, 1916. 



Anterior end provided with two lateral pairs of cuticular 

 lappets. Six pairs of preanal and five or more pairs of post- 

 tanal papillae present in the male. Spicules unequal and 

 dissimilar, the shorter being deeply grooved to form a canal in 

 which the longer glides. 



Hab. Beneath lining of gizzard of Birds. 



Genotype : S. \Spirop)tera] itmbellifera (Molin, 1860). 



Molin, 1860, Sitz. k. Akad. Wiss., Wien, xxxviii, 968; 

 Skrjabin, 1916, Ann. Mus. Zool., Petrograd, xx, 519. 



Appendix to Acuariinae. 

 5. Tropisurus Diesing, 1835. 



Syn. Teiraweres Creplin, 1846; Tro/)iVZocerca Diesing, 1851 ; 

 Astomum Schlotthauber, 1860 ; Tropidiiriis Wiegmann, 1835, 

 nee Neuwied, 1824; Acanthophorus v. Linstow, 1876; Microte- 

 trameres Travassos, 1915. 



Lips inconspicuous. A short buccal capsule present. 

 Cuticle of body may be armed with irregular longitudinal rows 

 of spines. Tail of male without alae and with a few pairs of 

 sessile papillae. Spicules unequal. The body of the gravid 

 female is enormously distended by the contents of the uterus, 



