COSMOCERCINAE 31 



The absence of " combs " on the ventral surface of the 

 male, as is indicated by Railliet & Henry, is the only salient 

 character to distinguish this genus from Cosmocerca. 



3. Oxysoraatium Railliet & Henry, 1913. 



Syn. Oxysoma Schneider, 1866, e. p. 



Lips small, sometimes not apparent. Oesophagus with a 

 posterior bulb. Tail of male pointed, with from three to 

 twelve pairs of preanal and up to six pairs of postanal papillae. 

 Spicules equal, relatively long. A small, canoe-shaped acces- 

 sory piece present. Vulva in posterior half of body. Eggs 

 containing embryos when laid. 



Hab. Alimentary canal of Amphibians and Reptiles. 



Genotype : 0. longesjnctilu^n Railliet & Henry, 1916 

 (= Oxysoma brevicaudatum of Schneider, 1866, nee Fusaria 

 brevicaudaia Zeder, 1803). 



Railliet & Henry, 1916, Compt. rend. Soc. Biol., Paris, 

 Ixxix, 113, 247 ; Skrjabin, 1916, Sci. Res. Zool. Exp. Brit. E. 

 Africa (Dogiel & Sokolow), 1914, i (4), 140. 



4. Syphaciella Monnig, 1923. 



Cuticle of head inflated. Cervical alae present. Lips 

 distinct. Buccal capsule absent. Oesophagus with a pre- 

 bulbar swelling and a distinct posterior bulb. Tail of male 

 ends in a spike. Wide caudal alae extend posteriorly as far as 

 the origin of the tail-spike. Two pairs of preanal papiUae ; 

 two pairs and one unpaired postanal papillae present. All the 

 papillae are in the cloacal region. Spicules svibequal. An 

 accessory piece present. Vulva anterior, postoesophageal, 

 surrounded by a prominent cuticular swelling. Common 

 trunk of uterus extends posteriorly almost to the level of the 

 anus. Uterine branches parallel. 



Hab. Alimentary canal of Birds. 

 Genotype : S. capensis Monnig, 1923. 



Monnig, 1923, Trans. R. Soc. S. Africa, xi, 108. 



5. Carnoya Gilson, 1898. 



Lips distinct, semicircular. Cuticle annulated, the anterior 

 twelve to fifteen rings of the female each armed with fourteen 

 spines. Male with one or two circlets of small spines on the 

 eleventh and tweMth rings. Phar3aix long, with wider 

 anterior chamber containing three sharp teeth. Oesophagus 

 slender, cylindrical, with a large oval muscular bulb anteriorly, 

 containing six paired rods, and a pyriform posterior bulb 

 containing three striated valves. Spicules apparently partly 

 fused. An accessory piece present. Vulva in front of middle 



