194 CYRTOTRACHELUS LONGIPES. 

circular raised collar at its dorsal anterior edge which is pro- 
duced laterally on either side. Elytra longer than thorax, 
narrowing behind and finely but distinctly striated, the intervals 
between the striz being fairly broad. Looked at super- 
ficially the upper integument appears to be without punctures. 
Legs long, thick and flattened; the front ones larger than the 
hind but only slightly so than the middle pair; femora thick- 
ened; tibia, more especially the anterior ones, ciliated on their 
inner edge and arched at their extremities and prolonged into 
a curved stout spine; tarsus long, the first joint longer than 
the second, the third heart-shaped; the segment of the body 
exposed by the elytra (pygidium) triangular, convex, and ending 
in a point posteriorly. Body oblong-elliptical, glabrous. 
@ much larger than ¢ witha longer rostrum. Front legs 
much larger than either of the hinder pairs, their tibia being 
very thickly ciliated on their inneredges. Pygidium blunter at 
posterior extremity than fingd. Lencthyd s1ethancosseyuet 10 
inch (to end of rostruin in each case). Length of rostrum in g 
sth inch; in @ 4 Wilh (Rise HERS ck) 
Life History. 
The beetles appear on the wing during the latter part of 
May or beginning of June at about the time the monsoon rains 
burst over the Chittagong Hill Tracts. They pair soon after 
emergence, and the ¢ then seeks out young sprouting bamboos 
in which to lay her eggs such as that figured in Pl. IX, e. 
Shoots attacked are always under 3’ in height, The insect 
grasps the fleshy shoot, generally about 3 inches below the top, 
with her long front legs, and cutting an oval incision in it through 
the outer spathe just above an internode with her lengthy 
proboscis deposits two eggs at its base, covering them over with 
bamboo chips which are of the same colour. These eggs, which 
can be seen zu situ from the outside, have been observed to be 
laid towards the end of June though as the beetles are to be found 
through July and on to about the middle of August, it is not im- 
probable that the ? lays other eggs on adjacent shoots. As far 
as present observations show, it is, however, apparent that only 
one of the eggs comes to anything, as only one larva is to be found 

