PAIlASITES OP ELEPHANTS. 



231 



19-21 mm. long. The maximum diameter of the body is about 

 the middle. It is -62 mm. in the male and -78 in the female. 



The average length of this species given here is greater than 

 that original]}^ recorded. Gedoelst stated that the length of the 

 male is 12-8 mm. and the female 17-8 mm. That these measure- 

 ments were based on a single individual male and one female is 

 evident from his remarks : " L'unique exemplaire que nous avons 

 etudie mesurait, etc." The measurements recorded here are the 

 average of all the specimens available. 



Skin. — The cuticle is striated at regular intervals of '02 mm. 



Mouth collar. — The mouth collar is distinctly separated from 

 the rest of the body by a groove. There is a curious cuticular 

 prolongation in the form of a spine at the site of this groove 



Text-fiffure 22. 



Quilonia apiensis Gedoelst. Lateral view of head. 



The mouth collar is irregularly rounded in outline, being "04 mm. 

 in length in the male and -08 in the female. It is 'IB in 

 diameter. 



External leaf-crown. — This consists of twelve leaflets. These 

 are thin and curved at the top, ending in a fine point. They 

 project freely above the head. 



Head jyapillce. — The four submedian head papillje are thick. 

 Each is surmounted by a knob-like structure. The two lateral 

 papilla; are thin and do not project above the surface. Their 

 termination is marked by a depression. 



Cervical papillce. — The two cervical papilte are thin and jDoint 

 slightly cephalad. They are placed on the lateral lines -98 mm. 

 from the head end in the male and 1"04 mm. in the female. 



Moitth capsule. — The chitinous mouth capsule is a short ring 

 •04 mm. in length and '16 mm. in diameter. It is not in 



