NO. 2258 TAENIOID CEST0DE8 OF DOGS AND CATS— HALL. 



43 



that is truncate conical to somewhat conical in shape (fig. 45) . They 

 are very nearly equal in size. The vitellarium is small, triangular, 

 and of reticular structure and rather widely set off from the other 

 male or female genital glands. The median point may or may not 

 project slightly between the ovaries but the vitellarium does not ex- 

 tend laterally as far as the ovaries. The shell-gland is small, dis- 

 tinct, and lies in the clear. The vagina follows the conformation of 

 the vas deferens, as noted above in the discussion of the male geni- 

 talia, and then curves in around the nearest ovary to the receptaculum 

 seminis in the interovarian field. In the transition from mature to 

 gravid segments, a striking feature is the almost constant forma- 

 ts"/-' s,.?'^' \ 



0^WM 





Fig. 45.— Multiceps multiceps. Mature seg- 

 ment. Enlarged. After Beffke, 1891. 



Fig. 46.— Multiceps multiceps. 

 Gravid segment. After Hall, 

 1910. 



tion of two lateral branches, one on each side, between the ovary 

 and the vitellarium. In gravid segments (fig. 46), the median stem 

 of the uterus has from 9 to 26 lateral branches, rather distinctly 

 parallel to one another for the most part, and most of these in turn 

 giving rise to a very few secondary branches, which usually remain 

 quite distinct and without tendency to fuse. The eggs are from 29 

 to 37 IX in diameter and have a shell 4 jx thick. 



Hosts. — Primary: Ganis familiaris, O. nebracensis. Secondary: 

 Ovis aries, Bos tav/rus, Ca^pra hircus, Equus caballics, chamois, mouf- 

 lon, gazelle, antelope, African antelope, Bubalis sp., Ozanna equina 

 {Hippotragus eguinus), Homo sapiens. 



