NO. 2131. NEMATODE PARASITES OF RODENTS— HALL. 199 



a very fine filamentous worm 40 ''' in length, species unknown." The 

 fact that this worm was very fine, 3^^ inches long, and located in the 

 stomach, suggests that it might be a species of Gongylonema. G. 

 Tieoplasticum is found in the stomach in rodents, and Gongylonetna 

 verrucosum occurs in the stomach in sheep and zebu, either free or 

 embedded in the gastric mucosa. The fact that the worm was fila- 

 mentous argues against the idea that it was an ascarid in a situation 

 in which these worms not infrequently occur, while its presence in the 

 stomach bespeaks its relation with the Filarioidea. Without caring 

 to make more than a tentative assignment, the evidence suggests that 

 the worm belongs in Gongylonema. (See comment on Filaria spe- 

 cies Morgan, 1868.) 



SuTafainily SFIR,UKI]SrA.H! Railliet, 1915, 



Synonym. — Physalopterinae Eailliet and Henry, 1912ff, in part. 



S'libfaniily diagnosis. — Spiruridae (p. 190) : Females with two uteri 

 and with vulva in the middle portion of body, not close to anterior or 

 posterior extremities. Pharynx without cuticular rings or spirals. 



Type-genus. — Splrura E. Blanchard, 1840. 



ANALYTICAL KEY TO CENERA OF SPIRURINAE. 



1. Male with a circumscribing bursa continuous anteriorly, and with 2 pairs of 



preanal and 2 pairs of postanal stalked papillae Physalopicra, p. 212. 



Male without a bursa continuous anteriorly, and not with 2 pairs of preanal 

 and 2 pairs of postanal stalked papillae 2. 



2. Mouth witJi 2 small inte,£;ral lips without teeth Spinira, p. 190. 



Mouth with 2 large lips divided Into 3 distinct lobes and provided with 



teeth Protospirura, p. 20o. 



Genus SPIRURA E. Blanchard, 1849. 



/Synonym. — Spiropfera Rudolphi, 1819, of authors. 



Generic diagnosis. — Spirurinae (p. 199) : Two lips, usually bearing 

 two papillae each, and not bearing teeth. Mouth straight and limited 

 by a chitinous ring. Esophagus long and cylindrical. Body of mod- 

 erate size, attenuated toward the anterior extremity. Spicules un- 

 equal. Bursa present, but not continuous anteriorly across the ven- 

 tral surface. Vulva anterior or posterior of middle of body. Two 

 uteri. 



Type-species. — Spirura talpae (Gmelin, 1790) E. Blanchard, 1849. 



SPIRURA TALPAE (Gmelin, 1790) E. Blanchard, 1849. 



SynonyTns. — Ascaris talpae Gmelin, 1790; Ascaris strumosa 

 Froelich, 1791; Fusaria conooluta Zeder, 1803; Spiroptera st7'umosa 

 (Froelich, 1791) Rudolphi, 1819; Filaria rytipleurltes Deslong- 



