218 FILARIOIDEA 



Type-species : A. (A.) [Spiroptera] anthuris (Rudolphi, 1819). 



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

 Ixxiii, 622 ; Baylis & Daubney, 1922, Mem. Ind. Mus., vii, 321. 



Subgen. 16. Cheilospirura (Diesing, 1861) Railliet, Henry & 



Sisoff, 1912. 

 " Cordons " run straight posteriorly, being non-recurrent 

 and not anastomosed. Five to seven pairs of postanal papillae 

 in the male. Spicules very unequal and dissimilar. 



Type-species : A. (C) [Spiroptera] hamulosa (Diesing, 1851). 



Diesing, 1851, Systema Helminthum, ii, 217; 1861, Sitz. k. 

 Akad. Wiss., Wien, xlii, 618, 683; Railliet, Henry & Sisoff, 

 1912, Compt. rend. Soc. Biol., Paris, Ixxiii, 622; Baylis & 

 Daubney, 1922, ilfem. Ind. Mus., vii, 321. 



Subgen. Ic. Dispharynx Railliet, Henry & Sisoff, 1912. 



" Cordons " recurrent, not anastomosed. Usually five pairs 

 of postanal papillae in the male. Spicules unequal and dis- 

 similar. 



Type-species: A. (D.) [Spirojjtera] nasuta (Rudolphi, 1819). 



Rudolphi, 1819, Entozoorum Synopsis, 23, 238 ; Railliet, 

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

 623-^; Baylis & Daubney, 1922, Mem. Ind. Mvs., vii, 321. 



Subgen. Id. Synhimanttis Railliet, Henry & Sisoff, 1912. 



" Cordons " recurrent and anastomosed across the lateral 

 lines. Usually five pairs of postanal papillae in the male. 

 Spicules unequal and dissimilar. 



Type-species: A. {S.) [Spiroptera] laticeps (Rudolphi, 1819). 



Rudolphi, 1819, Entozooriim Synopsis, 23, 238; RaiUiet, 

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

 623-4; Baylis & Daubney, 1922, 3Iem. Ind. Mus., vii, 321. 



vSubgen. le. Cosmocephalus Molin, 1858. 



" Cordons " sinuous, recurrent and anastomosed across the 

 lateral lines. Extensive lateral alae present. Usually five 

 pairs of postanal papillae in the male. Spicviles very unequal. 



Type-species: A. (C.) [Cosmocephalus] diesingii Molin, 1858. 



Molin, 1858, Sitz. k. Akad. Wiss., Wien, xxviii, 151-2; 

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

 Ixxiii, 622; Seurat, 1919, Novit. Zool., London, xxvi, 186; 

 Baylis & Daubney, 1922, Mem. Ind. Mus., vii, 320-1. 



The only character that serves to separate Molin 's genus 

 Cosmocephalus from the subgenvis Synhimantus is the presence 

 of lateral alae. We consider, therefore, that it should be 

 included here as a subgenus of Acuaria. 



I 



