PROCEEDINGS OF THE ISTATIONAL MUSEUM 



VOL. 77 



end rounded. Testes opposite each other, either entirely extracecal, 

 partly overlying the ceca, or occupying the entire width of body 

 and with their median borders touching. Ovary lobate, pretesticular, 

 and to the side of the median line. Vitellaria extracecal, commencing 

 immediately posterior of the transverse muscular ridge and extending 

 backward as far as the testes or bej^ond. Parasites in the kidneys 

 of water birds. 



Type species. — Eucotyle nephritica (Mehlis, 1846) Cohn, 1904. 



EUCOTYLE HASSALLI, new species 



SpecifiG diagnosis. — Eucotyle: Body elongate, 2.5 mm. long by 

 620/x to 650/x wide; anterior end triangular and set off from the 

 remainder of body by a transverse ridge situated 400/x to 434/* from 

 the anterior end. Cuticle evidently uniformly covered with spines 

 but in the specimens available for study only a few scattering blunt 



I 



FiGUEH 1. EUCOTTLE HASSALLI. VENTRAL TIEW 



spines were visible. Oral sucker subterminal, 310,(x in diameter. 

 Prepharynx absent ; pharynx well developed, 124|it wide. Esophagus 

 155/>i long, the anterior end being dilated to almost the width of the 

 pharynx. Intestinal ceca moderately wide, sinuous, with a distinct 

 median bend at the level of the testes, and terminating 300/* to 337/* 

 from the posterior end of body. Testes similar in shape, 18T/t to 210/* 

 long by 30/1 to 38/x wide, largely intracecal, and with their ends 

 deeply lobed, giving them an irregular X shape. Cirrus pouch thin- 

 walled, oval, lOO/i long by 80/a wide, and situated in the median line 

 immediately in front of ovary. Ovary deeply lobed, 128/i to 180/* 

 long by 75/1 to 125/1 wide, and situated to the left of the median line 

 a short distance in front of the testes. Receptaculum seminis and 

 Laurer's canal apparently absent. The uterus consists of a descend- 

 ing limb which runs in irregular coils to near the posterior end of 

 body where it turns and proceeds forward in the same manner as 

 an ascending limb, passing between the testes and between the ovary 

 .and cirrus pouch to a short distance behind the intestinal bifurca- 



