RESEARCHES IN HELMINTHOLOGY AND PARASITOLOGY. 59 



canals. Tail i -sooth inch long from anus. Anal and generative 

 apertures indicated by a prominent lip, and separated by a small 

 conical papilla. Penis consisting of two corneous, curved, spiculse ; 

 I -56th inch long, the other i -200th inch long. 



Female. — Viviparous, 6 lines long, i-iooth to i-goth inch broad. 

 Tail straight, long conoidal, i-i nth inch long from anus, obtu.se, 

 terminated by three minute points i -4000th inch long. Generative 

 aperture surrounded by a very prominent lip, a little posterior to 

 the middle. First portion of oesophagus i-66th inch long ; i -200th 

 inch at broadest part ; second portion i-56th inch long. 



Habitation. — Small intestine of Emys guttata. 



T.^NiA, Linn. 



3. Tcrnia Pidc/ie/la, n. s. 



White, without any admixture of any other color, variable, 

 usually broadest anteriorly. Head quadrilateral, sub-clavate, ob- 

 tusel}^ rounded, broader than the neck. Acetabula circular, cup- 

 shaped, lateral and opposite sessile, protractile. Neck very long, 

 cylindroid. Articuli containing several colorless globules ; ante- 

 riorly subglobular or transversely oval ; posterior moniliform, longi- 

 tudinally oval, or cylindroid and centrall}^ incrassate. 



Meamrements. — lyongest 9 inches. Articuli commencing to be 

 distinctly separate 4 inches from the head. Breadth anteriorly 

 I -4th line ; posteriorly i-6th line ; anterior articuli i-6th line long ; 

 posterior i-4th line. Acetabula i-i66th inch in diameter. 



Smallest 2 inches. Head i-75th inch broad. Articuli commenc- 

 ing distinctly separate 3-4ths inch from the head. Broadest part 

 of neck i-9oth inch; short distance posterior to the head, i-i25th 

 inch. Anterior articuli i-iooth inch diameter; posterior i-44th 

 inch long ; i-2ooth inch broad at extremities, i-i33d inch broad at 

 middle. Acetabula, i -200th inch diameter. 



Habitation. — Small intestine of Bnfo americanus. 



Remarks. — Closely resembles the Tcenia dispar, Goeze, found in 

 the Bufo viridis, etc., but it is relatively longer and narrower, and 

 is never colored. 



PLANARIA, MuIvLER. 



4. Plana ria Sylvatica, n. s. 



Body elongato-fusiform, thick, becoming narrowed forward, 

 smooth, shining ; superiorly convex, grajdsh with a fuliginous 

 stripe down each side of the dorsal line, and a transverse spot 

 of the same color at or just posterior to the center ; inferiorly 



