238 DR. E. T. LEIPER on [Feb. 1, 



The oral sucker measures 0-9 mm. broad by 07 mm. long. The 

 musculature is - 3 mm. thick. The ventral sucker lies at the base 

 of the cephalic cone, is spheroidal and has an antero-posterior 

 diameter of 1-25 mm., and its muscular wall is 0'4 mm. in 

 thickness. 



The alimentary canal has a well-developed pharynx and an 

 exceedingly short oesophagus. The two guts give off numerous 

 external ramifying branches. The internal blanches on the other 

 hand are relatively few, and resemble those of F. hepalica. They 

 rarely branch. 



Text-fio\ 28. 



Fasciola iiyanzce. Nat. size. 



a. (rut branches uncovered by yolk-glands. 



h. Upper limit of yolk-glands. 



o. Area occupied by testes. 



d. Area occupied by yolk-glands. 



The yolk-glands are very extensive and occupy the whole of the 

 posterior 44 mm. of the body ; they extend forwards also on either 

 side of the testes to the level of the shell-glands, leaving the 

 " shoulders " of the parasite free for over 2 mm. 



The greatly ramified testes lie in the anterior third only of 

 the body, and in comparison with the other forms occupy a rela- 

 tively small area. 



The specimens were not sufficiently well preserved to allow of 

 the differentiation, by staining, of the branched ovary from the 

 testes. The uterine coils lie immediately behind the ventral 

 sucker, and are few in number. They contain numerous large 

 dark brown eggs ovoid in shape and measuring 015 mm. by 

 0*07 mm. 



Family Paramphistomid^e. 



Genus Gastrothylax. 



5. Gastrothylax cruciformis, sp. n. (Text-fig. 29 A, B, C.) 



This species occurred in considerable numbers associated with 

 Panramphistomum buxifrons in the stomach. When alive the 

 specimens are of a deep red colour which changes to brown after 

 preservation in formalin. They have the characteristic form oi 



