674 



DEFINITION OF THE BOTHRIOCEPHALID^. 



FAMILY II. BOTHRIOCEPHALID.E. 



The head is egg-shaped and flattened, sometimes in the same direction 

 as the body, and then lut slightly marked off from the latter; at other 

 times in the opposite direction ; with two longitudinal, more or less deep 



FIG. 350. 



FIG 351. 





FIG. 352. 





FIG. 350. BotJiriocephalus cordatus of man (nat. size.) 



FIG. 351. Free swimming embryo of Bothriocephalu8 latus. ( x 500.) 



FIG. 352. Larva of a Botfiriocepkalas from the skink. ( x 20.) 



suctorial grooves, which lie opposite to each other on the flat side of the 

 chain, lut are devoid of any special musculature. Similarly, the hooks, 



