98 RESKAKCHEvS IN HKLMINTHOLOGY AND PARASITOLOGY. 



conical, acute, with the generative aperture at the posterior tliird of 

 the body. 



133. Spironoura Gracih, Leidy. Body of female incurved ; that 

 of male spiral posteriorly. Head naked ; mouth with a circular lip 

 of 6 papilke. Tail of female long, calcarate, acute ; of male, with 

 two rows each of three tubercles. Spicula of penis curved ensiform, 

 costate, emarginate at the extremity. Length of female 8 lines, 

 breadth i-3d of a line ; length of male to 4 lines, breadth to i-8th 

 of a line. 



Found in the stomach of Emys scnata. CEsophagus long, pestle- 

 form, gizzard globular, commencement of the intestine cordiform, 

 rectum short, wide, pyriform. Ovaries double. 



134. Spironoura Affine, Leidy. Body of female curved ; that of 

 male posteriori}' spiral. Head naked , mouth with a circular lip of 

 6 ? papillae. Tail of female nearly straight, moderately long, conical , 

 acute ; of the male, conical, incurved, ensiform, costate, acute. 

 Length of female 4^13 lines, breadth one-fifth of a line ; length of 

 male 3 lines, breadth i-6th of a line. 



Found in the coecum of Cistiido Carolina. 



135. Physaloptera Turgida, Rud. 



Spiroptera diddphidis virginiana, Leidy. Pr. A. N. S., v, 155. 

 Common in the stomach of Didclp/iis virginiana. Found by Dr. 

 Goddard, Mr. Schafhirt, and myself, and also by Mr. Joseph Jones, 

 in Georgia. 



136. Physaloptera Limbata, Leidy. 



Spiroptera scahpis canadensis, Leidy. Pr. A. N. S., v, 156. The 

 mouth bilabiate and surrounded by an elevated linear margin. Alse 

 of male, each with 4 diverging costae. The length 6 lines, breadth 

 I -4th of a line. 



137. Physaloptera Mucronata, Dicsing. 



Numerous specimens were obtained by Mr. Joseph Jones from the 

 stomach of the Alligator mississippiensis, in Georgia. 



138. Physaloptera Constricta, Leidy. Body wide, with the brown 

 intestine shining through, cylindrical to within a short distance of 

 the extremities; incurved ; anterior extremity with one or two con- 

 strictions, and abruptly inflexed. Lips large, lateral, constricted 

 from the body, each trilobate. Tail of female incurved, abruptly 

 conical and acute ; of the male alated, with the alae narrow, long, 

 and turgid. Length of female i'^^ inches, breadth two-fifths of a 

 line ; male half the size. 



Found frequently in the stomach of Tropidonotns sipedon, with the 

 anterior extremity of the body hooked through the mucous mem- 



