ART. 2 XEW PAEASITIC NEMATODES SCHWARTZ S 



end of the esophagus which is slightly posterior to the middle of that 

 organ. The distance between the vulva and anus (fig. 7) is 67/a. The 

 vagina is about 350/a long and each ovejector is about 285ju, long or 

 somewhat longer. The tail is 84/a long and terminates bluntly. The 

 posterior end of the female is turned dorsad and has the appearance 

 of a foot (fig. 4) when the worm is viewed from the side. 



Host. — Phacochoenos aethiopicus massaieits. 



Location. — Large intestine. 



Locality. — National Zoological Park, Washington, D. C. 



Type specimen.— ^o. 27789. U.S.N.M. 



Paratypes.— No. 27790. U.S.N.M. 



This species is named after Dr. E. W. Price who collected the 

 nematode specijnens from the wart hog and kindly turned them over 

 to the writer for determination. 



The second lot of specimens, which also represent a new genus and 

 species, were collected by Dr. L. T. Giltner, of the Bureau of Animal 

 Industry, from the intestine of a common wombat {Phascolomys 

 Tnitchelli) about 10 years ago. The host animal in question was 

 received at the National Zoological Park, Washington, D. C, on 

 December 1, 1916, and died of pneumonia on July 8, 1917. Doctor 

 Giltner made a post-mortem examination of the carcass and dis- 

 covered a number of nematodes in the large intestine which he kindly 

 turned over to the writer for determination. The illustrations 

 accompanying the description of these worms (Plate 2) were made 

 in July, 1917. Unfortunately most of the specimens were allowed to 

 become dry at one time during the intervening peric<i and it is there- 

 fore difficult to study the material at the presenv t'me in as great 

 detail as is desirable. However, the salient characters of these nema- 

 todes indicate quite clearly that they represent a new genus and 

 species. 



OESOPHAGOSTOMOIDES, new genus 



Strongtlidae. — The mouth is directed straight forward. The 

 mouth collar bears four prominent submedian and two lateral papil- 

 lae. (Fig. 2.) The buccal capsule is of moderate depth and cylin- 

 drical in shape. (Fig. 5.) An external leaf crown is present; an 

 internal leaf crown is absent. The esophagus is club-shaped. A 

 ventral esophageal groove is absent, Male bursa with two lateral 

 lobes and a well developed dorsal lobe. The ventro-ventral and 

 latero-ventral raj^s are close together and parallel. The externo-lat- 

 eral, medio-lateral and postero-lateral rays originate from a common 

 trunk, the last two being close together and parallel the externo-lat- 

 eral ray being separated from them by a relatively wide groove. 

 Externo-dorsal and dorsal rays arise from a common trunk, the latter 

 being cleft approximately in the posterior half, each terminal branch 



