58 RESEARCHES IN HELMINTHOLOGY AND PARASITOLOGY. 



with about 20 longitudinal rows of tegunientary tubercles, or small 

 quadrilateral plates i-i 600th inch long b}' i -2666th inch broad, ex- 

 tending as far back as the anus. Tail curved, conoidal, i-6oth inch 

 long from the anus, furnished ventrally with 7 or 8 pairs of minute 

 conical tubercles. Oesophagus i -5th line long, i -333d inch broad ; 

 intestine i -400th inch broad. Penis i -200th inch long, conoidal, 

 obtuse, bent at free extremity, composed of two lateral halves. 



Female. — Six to 11 lines long, i-5th to i-4th line broad. Poste- 

 rior extremity bent, dilated, terminating in a thick, oval, strongly 

 muscular receptacle or acetabulum, truncated posteriorly and exca- 

 vated into a deep conical cavity, containing a strong hook, with 

 the point directed forward, i -200th inch long, with a base i -400th 

 inch broad. CEsophagus, in an individual 8^2 lines long, i line long 

 by I -666th inch broad at commencement, i-333d inch at termina- 

 tion. Intestine i -450th inch broad. Ovum i -570th inch long, 

 I -3333d inch broad. 



Habitation. — Stomach and commencement of small intestine of 

 Emys guttata . 



Remarks. — The female hangs suspended by its posterior hook from 

 the mucous membrane of the stomach of the Emys, in which it is 

 parasitic, while the male clings closely to the female by means of its 

 spiral folds, retaining its position readily from the roughness of sur- 

 face produced by its numerous ventral tubercles, and also those upon 

 the tail. I found this entozoon three times, in 15 individuals of 

 Emys guttata. In one instance it was a large female ; in the second 

 two, average size females, and one male ; in the third instance the 

 stomach was distended with the worms, of which about one in five 

 or six was male, and usually clung to the largest of the females. 



CUCULANUS, MULLER. 



2. Ciiculaniis Trispiiwsus, n. s. 



Body reddish, narrow, cylindrical, finely striated, attenuated at 

 the extremities. Mouth large, sustained by a red or brown corneous 

 cap.sule, presenting 8 radiating ribs or lines upon each side of a mid- 

 dle line. CEsophagus of two portions ; the first elongated pj-riform ; 

 the second cylindroid, a little dilated at its lower end. Intestine 

 simple, cylindrical, a little narrower than the oesophagus. 



Male. — Three lines long, i-200th to i-i6oth inch broad at middle. 

 Posterior extremity curved, acute, furnished on each side ventrally, 

 with an expansion of the integument, of nearly uniform breadth, 

 I -Sooth inch, to its termination, commencing i-5oth inch above the 

 end of the tail, and perforated by six nearly equidistant respiratory 



