NO. 2131. NEMATODE PARASITES OF RODENTS— HALL. 51 



form sucker, apparently without a limiting chitinous ring and its 

 accompanying papilliform node, and Travassos describes and figures 

 a circular sucker with a prominent chitinous ring bearing on its pos- 

 terior margin a papilliform node. Even in poorly preserved mate- 

 rial the heavy chitinous sucker can be depended on to remain in 

 evidence. Schneider figures a worm in which the distance from the 

 sucker to the cloacal aperture is more than twice the distance from the 

 tip of the tail to the cloacal aperture, whereas ^Travassos figures a 

 worm in which the distance from the tip of the tail to the cloacal 

 aperture is more than five times the distance from the sucker to the 

 cloacal aperture. Schneider figures a total of 11 pairs of papillae, 

 while Travassos describes and figures a total of 21 pairs of papillae. 

 We must therefore conclude that Schneider gave a most inaccurate 

 account of the important features of his specimens or that Travassos 

 had described a new species. Without feeling that a final verdict 

 is possible, I still believe it is better to keep two apparently different 

 species separate rather than to suppress Schneider's description. I 

 have therefore accepted Travassos's species as a new one, and accepted 

 the name as a new one, regarding this species as type of the new genus. 

 The specific name is to be regarded as valid and based on a misdeter- 

 mination. There is some question as to the proper action in a case of 

 this sort, but as this action makes no change in the name I have pre- 

 ferred it. 



Subfaixiily SXJBXJLTJRI]Sr-A.E; Travassos, 1914=0. 



Synonym. — Kathlaniinae Lane, 1914. 



/Subfamily diagnosis. — Heterakidae (p. 44) : Mouth with lips in- 

 conspicuous or lacking, rarely with three lips, followed by a vesti- 

 bule; esophageal bulb present; preanal sucker fusiform and not 

 limited by a chitinous ring; spicules unequal, one or both occasionally 

 lacking or imperfectly chitinized; gubernaculum usually present, 

 rarely lacking. 



Type-genus. — Suhulura Molin, 18606. 



The present writer is unable to determine whether Subulurinae 

 Travassos, 1914a, or Kathlaniinae Lane, 1914, is the earlier name, as 

 Travassos's paper bears no date of publication and the date of re- 

 ceipt of available copies indicates nothing as to whether it preceded 

 or followed Lane's paper. As matters stand, the name Subulurinae 

 has been used because it is based on a better loiown genus from 

 commoner and better known hosts. Lane's subfamily is based on a 

 new genus and species of worm from the turtle in India, and a casual 

 examination of the descriptions of the two included species suggests 

 that certain features may in time warrant restricting his forms to a 

 subfamily Kathlaniinae and divorcing it from the genera which 

 may better be included under the Subulurinae. 



