ARDUENNINAE 215 



Hab. Adults in stomach of Siiidae. Larvae in coprophagous 

 Beetles. 



Genotype : A. [Spiroptera] strongylina (Rudolphi, 1819). 



Rudolphi, 1819, Entozoorum Synopsis, 23, 237 ; Railliet 

 & Henry, 1911, Bull. Soc. Path, exot., Paris, iv, 695; Foster, 

 1912, U.S. Dept. Agric, Bur. Anim. Ind. Bull. 158, 9. 



2. Simondsia Cobbold, 1864. 



Lateral cervical alae present. Lips inconspicuous. Within 

 the opening of the mouth a large dorsal and a large ventral 

 tooth. Buccal capsule long, cylindrical, with spiral thicken- 

 ings in its wall. Tail of male short. Four pairs of preanal 

 and one pair of postanal papillae present. Spicules very 

 unequal. Body of gravid female enlarged posteriorly into a 

 subspherical sac enclosing the uterus and a portion of the 

 intestine. 



Hab. Stomach of Suidae. 



Genotype : S. paradoxa Cobbold, 1864. 



Cobbold, 1864, Entozoa, London, 79 ; Plana, 1897, Atti. Soc. 

 Ital. Sci. Nat., Milan, xxxvii, 17. 



3. Physocephalus Diesing, 1861. 



Sjm. Leiuris Leuckart, 1850 (?); Cephalacanthus Diesing, 

 1853, e. p. ; Mastophorus Diesing, 1853, e. p. 



Cuticle of anterior extremity inflated. Three lateral alae 

 on each side. Lips trilobed. Oral cavity small, without teeth. 

 Buccal capsule voluminous, with spiral and annular thicken- 

 ings in its wall. Tail of male with narrow symmetrical alae. 

 Four pairs of preanal papillae present. Spicules unequal. 

 Vulva in posterior half of body. 



Hab. Adults in stomach of Mammals. Larvae in coproph- 

 agous Beetles. 



Genotype : P. [Spiroptera] sexalatus (Molin, 1860). 



Molin, 1860, Sitz. k. Akad. Wiss., Wien, xxxviii, 957 

 Diesing, 1861, Sitz. k. Akad. Wiss., Wien, xlii, 619, 686 

 Foster, 1912, U.S. Dept. Agric, Bur. Anim. Ind. Bull. 158 

 Hall, 1916, Proc. U.S. Nat. Mus., 1, 218. 



4. Spirocerca Railliet & Henry, 1911. 



Lips trilobed, reduced. Within the opening of the mouth 

 six small papillae. Buccal capsule short, expanded anteriorly, 

 without special thickenings. Tail of male with narrow alae. 

 Four pairs of preanal, two pairs of large postanal papiUae and 

 a group of small papillae near the tip of the tail. Vulva in 

 anterior region of body. 



