PARASITES OF ELEPHANTS. 



211 



the body by a groove. It is 0-18 mm. long and -08 mm. m diameter. 

 It has a rounded mar-gin. The oral opening is circular and is 

 surrounded by ten rounded lips. The one in the mid-ventra 

 line and also that in the mid-dorsal line are broader and divided 

 into two by a superficial depression. There is no oral cavity. 



Text-figure 5. 



Lelperenia galehi Khalil. Cephalic end. 



Phanjnx.—'Yhe short cylindrical muscular pharynx is 'U mm. 

 in leno-th and -1 mm. maximum diameter. It is thus much 

 lonc^er^'aud broader than in L. leijyeri. From its cephalic end 

 sprmg eight cone-shaped processes that surround the mouth- 

 opening. The fine apices of these processes correspond more or 

 less to the interlabial depressions. 



CEsotyhagus.—ThQ thin muscular oesophagus is irregularly bent. 

 It is -39 mm. long in the male and -4 mm. in the female. Its 

 maximum diameter is at posterior end, and measures m the male 

 •06 mm. and in the female -07 mm. 



Chyle intestine. ^The intestine pursues an almost straight 

 course. The cells of the intestinal wall are slightly pigmented. 

 The short rectum is indistinctly marked from the intestine. 



Excretory system.^There is a large excretory vesicle similar to 

 that described in tlie type-species. The excretory pore is placed 

 on a large raised papilla 1-2 mm. from the head end. The 

 papilla is'radially striated round the pore. 



