PTINIDiE. 
317 
does not appear to have been reared. S. anale, Le., has a length of 
one-eighth to a quarter of an inch and is commonly found boring in cut 
Fig. 196— SlNOXYLON ANALE, X 6. 
and dead wood. A number of trees it infests are recorded, as well as 
bamboos ; apart from its significance as a forest pest, it is likely to 
be found anywhere in the plains. It is the species twice referred to in 
Indian Museum Notes (III, p. 123, V, p. 113) and we have reared it 
from ordinary dry wood in Behar. S. conigerum, Gerst., is recorded 
in South India, and is widespread in the tropics. S. crassum , Le., is 
referred to by de Niceville (Indian Mus. Notes, V, p. 106) as boring in 
Acacia catechu and is known to attack the cut or dead wood of other trees. 
Ptinid^i. 
Tarsi five-jointed. Antennce often with a feeble three-jointed 
club. Head retractile into the prothorax. 
Small beetles, often of cylindrical form, the integument hard : the 
tarsi are of five joints, the basal two subequal in length (c. f. Bostri- 
chidae). The colours are sombre, dark brown or black predominating. 
The antennae are often feebly clubbed. 
The larvae are well-known as borers in wood, furniture, dried fari¬ 
naceous matter, books, drugs and tobacco. These larvae are of a form 
similar-to the Lamellicornia , the body white and thickset, set with fine 
hairs, and curved back on itself ; the head is small, with distinct eyes 
and small antennae usually of two joints, the body is finely wrinkled, 
and there are three pairs of legs. These larvae eat tunnels and are very 
