312 rROCEEDiNas of the academy of [1886. 



Asoaris auoura. Dujardin, Diesing, Syst. ITel., ii, 161. 



Numerous females, 3 and 4 inches long to 2 mm. thick. These 

 were all suspended in the stomacli, through double apertures of 

 the mucous membrane, and thus tightl}^ retained in position. From 

 a snake, which, from the description, is supposed to be the milk- 

 snake, Opliiholus. Obtained by Dr. James Bissell, in the vicinity 

 of Harrisburg, Pa. 



Ascaris penita. 



Body cylindrical, tapering at the extremities, and most attenu- 

 ated in front ; mouth trilabiate. Tail of female, long, straight, 

 conical, subulate; of male of same form, strongly curved, with 

 the point brought near the genital aperture ; provided at the pos- 

 terior third with four pairs of papillae. Penal spiculte remark- 

 ably robust. 



Length of female 5 to 7 lines, by ^ line in width ; of male, to 

 5 lines, by O'SIS mm. in width. Numerous specimens from the 

 intestine of Trachemys scabra. Generative aperture of the 

 female at the posterior third of the body. QSsophagus long cyl- 

 indrical, followed by an oval or spherical gizzard. Commence- 

 ment of intestine dilated. CEsoph'agus 1'75 mm. long, by 0"125 

 wide : gizzard about 0'25. Tail of female r25 mm. lon<j;. 

 Breadth of penal spicules 0*08 mm. 



Physaloptera torquata. 



Body c^'lindrical, most attenuated anteriorly ; head with a con- 

 spicuous narrow annular fold or collar ; mouth bilabiate, labia 

 half conical with a pair of lateral papillse and the apex provided 

 with a group of four, of which one is external to the other. Tail 

 short, conical, obtuse, recurved from the anal aperture. 



Numerous specimens, all females, from 3 to 6 lines wide and 

 one-fourth of a line thick. Worms all more or less spirally coiled. 

 From the stomach of the badger, 3Ieles labradorica. 



Physaloptera turgida. Rudolphi, Diesiug; Syst. Helm., ii, 2o3. Leidy, Pr A. N. S., 

 1866, 53. 



From stomach of the opossum, Didelpliis virginiana. Collec- 

 tion of the Army Medical Museum, Washington. Also received 

 from Dr. Benjamin Sharp. 



Physaloptera abbreviata. Rudolphi, Diesing; .Syst. Helm., ii, 2.'i5. 



Numerous females from 3 to 8 lines, and three males about 2 

 lines. From the visceral cavity of Phrynosoma regale. Collec- 



