LICE. 



385 



Like the preceding section, this also has derived its name from 

 its food, viz. from Greek word dt/in, signifying blood. The genera 

 belonging to this section arc few, and so far as known have five 

 joints to the antennae, and only one claw to the tarsi. 



Genus H.-ExMatomyzus {Piag.). 

 Head rostrate ; antennae lenticular ; legs moderate in thickness. 



H/EMATOMYZUS ELEPHANTis {Piagct, Tijdsclir. voor Eiit., 2d Ser. iv. 254). 

 — 22. Specimens ; 23. Enlarged sketch of ditlo ; 24. Illustrative 

 vignette (elephant). 



Texture of skin hard and chitonous, 

 antennae lenticular five-jointed, head wi'h 

 a long slender rostrum like that of an 

 Api'on but less curved, body ovate and 

 convex on the back, scutellum broad and 

 narrow, tarsi with only one claw. 



Colour reddish madder brown, smooth 

 and shining, impunctate. 



Infests the elephant. 



Genus H.^matopinus {Leach). 



Head not rostrate ; legs thick. 



This is the principal genus that is parasitic on mammals. With 

 the exception of the preceding insect takea on the elephant, it 

 includes all the blood-sucking lice that attack mammals other than 

 man. Those that attack man have been separated from the rest, 

 but in truth cannot well be separated, especially when regard is 

 had to the louse of the monkey, which is excessively like that of 

 the human species, and indeed forms a transition between them 

 and the other species of this genus. 



They leave the body much sooner after death than the mallo- 

 phagous specie?, vhich adhere to the feathers or fur for days. 



