RESEARCHES IN HELMINTHOLOGY AND PARASITOLOGY. 97 



testine of Morrliiia pntinosa, and I have obtained others from the 

 intestine of Morrhua aijiericana. 



127. Ascaris Cylindrica, Leidy. 



AngiostoiiiKfii f cyliiidn'iiaii , Diesing. Syst. Helm., ii, 559. 



Ascatis cyli)idrica, I^eid}'. Pr. A. N. S., iv, 229. Body cylindroid, 

 equally attenuated towards the extremities, curved. Mouth dis- 

 tinctly trilabiate. Tail narrow, conical, curved, acute. Female 

 generative aperture just posterior to the middle. Length four-fifths 

 of a line, breadth one-twelfth of a line. 



Found in the intestine of Helix a/ tenia fa. No cartilaginous 

 pharynx as in Angiosfomuiii . 



128. Ascaris Infecta, L,eidy. Pr. A. N. S., iv, 229; Faun, and 

 Flora within I,iv. An., 42. Found in the ventriculus ol Jiiius mar- 

 ginatiis. 



129. Synplecta Peiidiila, Leidy. Pr. A. N. S., v, 240. From the 

 stomach of Eniys guttata. 



130. Oxyuris Com par, Leidy. Body fusiform ; head continuous 

 with the body, subacute, with a dilatation of the epidermis ; mouth 

 small. Tail of female long, subulate, spirally contorted ; the gen- 

 erative aperture one-fifth the length of the body from the head. 

 Length of female 4 to 7 lines, breadth i-3d of a line ; length of tail 

 from the anus i '2 lines. 



Seventeen specimens were found in company with others of laviia 

 (■rassicollis in the small intestine of the cat, Felix catus. Oesophagus 

 long, pestle-form ; gizzard globulo-pyriform ; intestine dilated at 

 the commencement, afterwards cylindrical. Males were not seen. 



131. Oxyuris Ciirvula, Rud. Intestine of the horse, Equiis 

 cabalhis. 



132. ? Oxyuris Dubia, Leidy. Body fusiform, curved. Head 

 continuous with the body, naked. Mouth unarmed. Female gen- 

 erative aperture about the middle of the body. Tail abruptly nar- 

 rowed, acutely conical. Length of female i^ lines, breadth i-4th 

 of a line. Male not seen. 



Found in the coecum of Fhifo americanus and of Salamandra rubra . 



Spironoura, Leidy. 



Body cylindroid, attenuated at the extremities. Head continuous 

 with the body. Mouth round, surrounded by a circular papillated 

 lip. Caudal extremity of male spiral acute, tuberculate, with the 

 two spicula of the penis curved, ensiform, costate ; of the female 



