CESTODARIA 457 



C . a r m e n i a c u s , Cholodkowsky , 1 91 5. 



Length of body reaches 55 mm., with breadth of 5 mm. 

 Body and head oval m transverse section. Hind end 

 shghtly tapering and bluntly pointed. Head not broader 

 than body, truncated, with wedge-shaped anterior exten- 

 sion ; longitudinal grooves absent on head. Genital 

 apertures in last fifth of body-length. Post-ovarian 

 vitellaria are probably present. Eggs about 80 microns 

 long and 45 microns broad. Parasitic in intestine of 

 Capoeta sp., Armenia. 



G. terebrans, Linton, 1893 (' Mono bot hrium tere- 

 brans'). 



Length of body reaches 28 mm., with breadth about 2-5 mm. 

 Body oval in transverse section. Hind end dilated at level 

 of sexual apertures and pointed posteriorly. Head broader 

 than body and subsagittate, wedge-shaped or bluntly 

 rounded; longitudinal grooves absent. Genital apertures 

 at about the anterior limit of the last fifth of the body. 

 Post-ovarian vitellaria are present. Eggs measure 60-65 

 microns in length and 30-35 microns in breadth. Parasitic 

 in intestine of C a t o s t o m u s a r d e n s , Wj^oming, U.S.A. 



C. hexacotyle, Linton, 1898 (' Mono bot hrium hexa- 

 cotyle '). 



Length of body reaches 14-5 mm., with breadth of 1 mm. 

 Body oval in transverse section. Hind end tapering and 

 pointed. Head not broader than body, broad at base, 

 pointed anteriorly and wedge-shaped, each of the dorsal 

 and ventral surfaces of the wedge bearing three broad 

 elongated loculi or triangular grooves which point to the 

 anterior extremity ; shape variable. Genital apertures in 

 last fifth of body-length. Post-ovarian vitellaria are 

 present. Eggs measure 38-40 microns in length and 

 20 microns in breadth. Parasitic in the intestine of 

 Catostomus sp., Arizona, U.S.A. 



C. catostomi. Cooper, 1920 (' Glaridacris cato- 

 stomi '). 



Length of body measures 5-25 mm., with maximum breadth 

 0-4-1 mm. Body, oval in transverse section. Hind end 

 tapering and pointed. Head region broader than body, 

 and similar in shape to that of Archigetes brachy- 

 urus, i.e. wedge-shaped, the dorsal and ventral 

 surfaces of the wedge each bearing three broad loculi, 

 the end of the wedge being truncated when viewed dorsally 



