762 
RHYNCHOTA. 
We figure Biaspis Barberi, Gr. (Plate LXXXII, fig. 3), which grows 
on Loranthus on trees. Chionaspis vitis , Gr., is frequently to be 
seen on the leaves of mango trees ; two species of Hemichionaspis , 
H. fici, Gr., and H. minima , Gr., infest the fig trees so constantly 
grown as shade. 
Pediculim;.— (Anoplura) Lice. 
Wingless flattened parasitic bloodsucking insects. The head distinctly 
separated from the thorax ; the three segments of the latter fused into 
one mass. The proboscis short , not folded hack under the thorax. The 
legs stout , generally with very large claws. 
Lice are common parasites of men and mammals, and their 
characteristic flattened shape and big claws make them easily recognised. 
It is possible to confuse them with 
the non-blood-sucking Mallophaga, 
as a few species of the latter are found 
on mammals though they are mostly 
confined to birds. The Mallophaga 
differ from the Pediculidce in having 
jaws instead of a proboscis, and in 
the thoracic segments being usually 
fairly distinct ; as a rule the head 
is relatively much larger than in 
Pediculidce, and the claws smaller. 
Very little seems to be known about 
the life-history of Lice. The males 
are generally a little smaller than the 
females, and can sometimes be distinguished by their having the end of the 
abdomen rounded whereas the female abdomen is often divided by a 
median notch or cleft. They are very prolific and probably most species 
will be found to pass their lives on the body of their host, though some of 
them apparently do not do so. Three species infest man, and are common 
in India. These ar e Phthirius inguinalis, Leach, the crab-louse; Pedi- 
culuscapitis , DeGeer., the head-louse; andP. vestimenti , Burm., the 
body-louse. Other species occur on horses, cattle, goats, pigs, camels, 
dogs, etc. 
Fig. 535—H jem a to pin u s of Buffalo. 
