564 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 57. 



Host. — Dog. 



Location. — Intestine. 



Locality collected. — Rome, Italy. 



ASCOCOTYLE ANGRENSE TraTassos, 1916. 

 1916. Ascocotyle angrense Tbavassos, 1916 (in Butorides striata; Brazil). 



Specific diagnosis. — Ascocotyle: Length, 0.46 to 0.48 mm.; maxi- 

 mum width, 0.25 to 0.26 mm. Body piriform, concave ventrally. 

 Cutaneous scales present in anterior portion. Oral sucker large. Cir- 

 cumoral spines cylindrical, with round points, about 72 \l long by 6 [i. 

 thick; ventral spines a little shorter than the dorsal spines. Oral 

 cecum funicular in shape, 70 [i. long. Ventral sucker 49 \t. in diameter, 

 situated about two-thirds the length of the body from the anterior 

 end. Testes ellipsoidal, transversely elongated, about 106 by 71 ti. 

 Ovary ellipsoidal, transversely elongated, anterior of testes, about 78 

 by 49 [I in diameter. Seminal vesicle large, elongated, behind ovary. 

 Vitellaria small, composed of a few lobules situated in front and a 

 little to the side of the testes. Uterus with numerous coils, some pass- 

 ing in front of ventral sucker. Eggs piriform, about 20 [t. long by 

 10 [X wide. 



Host. — Butorides striata. 



Location. — Small intestine. 



Locality collected. — Angra dos Reis, Est. do Rio, Brazil. 



ASCOCOTYLE LONGA, new species. 



Fig. 29. 



1920. Ascocotyle longa Ransom, 1920 (the present paper), (in Vulpes 

 lagopus; U. S.). 



Specific diagnosis. — Ascocotyle: Length, 0.85 to 1 mm.; maximum 

 width, 0.27 to 0.35 mm. (near posterior end) ; body much attenuated 

 anteriorly. Cutaneous scales about 7.5 [x long by 4 [jl wide. Mouth 

 surrounded by a single crown of heavy cylindrical spines with 

 pointed posterior ends, 16 in number, those on the ventral side of the 

 mouth varying from 16 to 18 \i in length, those on the dorsal side 

 from 16 to 24 jx. Dorsal lip prolonged anteriorly in a short tri- 

 angular process. Oral sucker, 80 to 85 [x long by 50 to 60 [x in trans- 

 verse diameter, with a posterior hollow prolongation or oral cecum 

 140 to 1^0 [X long, about 20 [x in diameter anteriorly, tapering to a 

 point posteriorly. The oral cecum is usually more or less bent and 

 twisted especially near its posterior end. Pharynx globular or 

 cylindrical, 45 to 60 [x in transverse diameter, located 190 to 350 jx 

 from the anterior end of the body, about 50 jx in front of the bifurca- 

 tion of the intestine. Intestinal ceca extend into posterior portion 

 of body, terminating just in front of the testes. Ventral sucker, 

 50 to 55 [X wide by 70 to 75 [x long, situated 500 to 625 [x from the 



