DESCRIPTION OF TWO PAKASITIC NEMATODES FKOM 

 THE TEXAS PECCARY 



By Benjamin Schwartz and Joseph E. Alicata 



Zoological Division, Bureau of Animal I ndn.stri/, Unitul States Department of 



Agriculture 



In November, 1931, Dr. J. H. Cooi)er, a veterinary inspector of the 

 Bureau of Animal Industry, engaged in tick-eradication work in 

 Texas, forwarded to the bureau in Washington the viscera of three 

 white-collared ])eccaries, which had been killed in the vicinity of 

 Raymondville, Tex. This material was secured at the request of 

 the senior author, who has been interested in the parasitic fauna of 

 peccaries, especially in its relation to that of domestic swine. The 

 examination of the viscera disclosed the presence in the stomach of 

 one of these host animals of several specimens of PhysoceplKilua 

 sexalatus, a spirurid nematode of common occurrence in swine in 

 this country, and one specimen of another spirurid of the genus 

 Parab/onema, described in this paper; another s])ecimen of Pamhro- 

 nema was foundin the lumen of the esophagus of the same animal. 

 The small intestine of this host animal also contained a cestode, 

 identilied by the junior author as Moniezia henedeni, and reported 

 by him elsewhere.^ The stomachs of the remaining two animals were 

 free from parasites. In the small intestines of these two peccajies 

 there were found a number of trichostrongyles, which are considered 

 as representing a new genus and new species. No other parasites 

 were found in any of the other visceral organs examined, including 

 the lungs, liver, and kidneys. 



PAROSTERT.\GIA, new genus 



Generic diagnosis. — Trichostrongylinae: Head less than 25^ in 

 diameter, with three distinct lips surrounding the mouth, and with 

 six circumoral papillae, four of which are submedian and two lateral 

 (amphids) in position (fig. 1, a). Cervical papillae were not seen. 

 Cuticle of head not inflated. The ventro-ventral and latero-ventral 

 rays of the bursa are widely separated, the tips of the former being in 

 relation with a conspicuous prominence of the margin of the bursa. 



1 Journ. Parasit., vol. 9, no. 9, Sept. 1932. 



No. 2956. — Proceedings U. S. National Museum, Vol. 82, Art. 15 



155087—33 1 



