A NEW PARASITIC NEMATODE FROM AN UNKNOWN 

 SPECIES OF BAT 



By Benjamin Schwartz, 



Of the Bureau of Animal Industry, United States Department of Agriculture 



In a collection of specimens forwarded to the Bureau of Animal 

 Industry in the Department of Agriculture by Dr. E. W. Price 

 from College Station, Texas, there were found a few specimens 

 of trichostrongyles from the intestine of an unknown genus and spe- 

 cies of bat, which are considered to be a new species of the genus Ano- 

 'plostrongylus Boulenger 1926. This is the first record of the occur- 

 rence of this nematode genus in the United States, the other two 

 known species of the genus occurring respectively in Belgium and 

 Brazil. The name Anoplostrongylus delicatus is proposed for the 

 species from the United States. 



ANOPLOSTRONGYLUS DELICATUS, new species 



Diagnosis. — Characters of the genus. Male 4.25 mm. long by 120 /x 

 in maximum width. The diameter of the head excluding the cuticular 

 expansion is 21 /x. The cephalic cuticular expansion is from 46 to 

 50 ju long by about 38 m wide. The esophagus is club-shaped, the 

 anterior narrower portion being almost twice as long as the broader 

 posterior portion. The total length of the esophagus is 350 n, its 

 diameter in the middle of the anterior narrower portion being 17m 

 and its maximum diameter in the posterior portion being about 33 n. 

 The bursa spread out is 227 m wide. The ventro-ventral ray is longer 

 and narrower than the iatero-ventral ray, these rays being divergent 

 and their tips being separated by a distance of about 42 n. The tip of 

 the Iatero-ventral ray is more or less falcate. The tip of the externo- 

 lateral ray which diverges from the common stem of the other two 

 lateral rays terminates in an elongated knob. The postero-lateral 

 ray is narrower and somewhat shorter than the medio-lateral ray, the 

 tips of these rays being about 21 ^ apart. The externo-dorsal rays 

 are relatively long and terminate in knoblike tips. In the spread out 



No. 2677. -Proceedings U.S. National Museum, Vol. 71, Art. 5 



28944—271 1 



