NEMATODE GENUS PHl'SALOPTERA. llOl 



post-anal in position ; these last situatGcl just in front of niiddle 

 of tail. Spicules unequal, the largei- having a double barb at its 

 tip. Eggs double-shelled, the outer being the thicker ; they are 

 46 X 29^. 



Host: Gorvus comix. Turkestan. 



This is probably not a Physaloptera, as evidenced by the 

 rounded lips without teeth, the arrangement of the bursal 

 papillse, and the presence of a hook on the spicule. 



(85) Physaloptera papilloradiata v. Linstow, 1899. 



Length of male 32 mm., of female 56 mm. by 790 /a thick. 



Two rounded lips. 



(Esophagus 1/1 2th, tail of male l/7th, of female 1/1 27th of 

 body-length. 



Bursa with 4 pairs pre-anal and 2 pairs post-anal stalked 

 papillae ; 7 pairs of post-anal ventral papillae, of which 1 pair is 

 just posterior to the anus, and the remaining 6 pairs are aggre- 

 gated at the posterior end of the tail. 



Eggs 26 X 12 /A. : 



Host : Canis lupics. Pectoral cavity. Persia. 



As figured by von Linstow, the arrangement of the caudal 

 pa.pillfe is very similar to that of Fh. 7'ottmdaia v. Linst., except 

 thai in" rotundata there are 5 papillae at the base of the tail, 

 whereas in papilloradiata there are 12. I have placed this 

 species under Sp. Inq. because of this similarity, and because 

 Seurat has found Ph. rotundata to be a Habronema. 



(86) Physaloptera spirula Hempr. & Ehrenb., 1828. 



Male 6 mm. long ; female unknown. Head continuous with 



body. Mouth papillate. Caudal extremity of body provided with 



closed bursal alse. 



Hosts: Frocavia S7/riaca. l-p -.i.- o- iai- 



„ . '^ . }■ Large intestine. Syria and Arabia. 



Frocavia capensis. J 



(Extracted from Hall, 1916.) 



SPECIES WRONGLY ATTRIBUTED TO THE GENUS. 



(87) Physaloptera rotundata v. Linstow, 1906. 



Length of male 15*6 mm. by I'l mm. thick ; length of female 

 20*3 mm. by 1'5 mm. thick. Both ends of body rounded. 



Two large lips, each bearing a prominent papilla on each side. 

 (Esophagus l/8"6 in male, l/9th in female, tail in male l/40th, 

 ■ in female l/20th of body-length. 



Bursa narrow, with 6 pairs of lateral stalked papillae, of which 

 4 pairs are pre-anal and 2 pairs post-anal. Two pairs of ventraL 

 papillae at tip of tail, and just in front of them an unpaired 

 papilla. Spicules unequal; right 510 /x,, left 2170 /a long, both 

 with rounded tips. - - 



