364 Records of the Indian Museum. {Vo.L. XI, 
LARVA. 
The larva of Catapiestus indicus is a parallel-sided, elongate, 
flattened insect, brownish in colour, and terminated behind by 
a pair of long spiniform processes (see pl. xxi, figs. 20-21). 
The head is almost semicircular, with a well-defined and some- 
what prominent clypeus which bends downwards, so that the 
semicircular labrum is almost vertical and only partly visible 
from above. The suture limiting the frons behind is (? always) 
very distinct; it extends on either side from a point in the middle 
line immediately in front of the anterior margin of the pronotum, 
almost in a straight line towards a point on the margin of the head 
immediately behind the base of the antenna; but after traversing 
nearly half this distance, it turns abruptly forwards to run 
a short distance parallel to the sagittal plane and then bends 
straight outwards till it regains its former line, which it resumes 
and follows to the margin of the head. 
The ocelli are four in number on each side, three in a line 
situated immediately behind the base of the antenna, and one a 
little behind them on the dorsal surface. : 
The antennae are four-jointed. The basal joint is scarcely 
as long as broad; the second joint is somewhat longer than 
bread; the third joint is fully twice as long as the second and 
scarcely as thick; the fourth joint is minute, being only about as 
long as the third joint is broad, and about one-third as broad 
as long. 
The mandibles are stout and are tridentate distally, the 
middle tooth being»the largest and most prominent, the lowest the 
smallest and more or less fused with it. There is a very large 
molar tooth. 
The lobe of the maxilla is about twice as long as broad, simply 
rounded distally. The maxillary palps have three joints, of which 
the middle one is a little the longest and the third is slenderer 
than the other two, which latter are of uniform width throughout 
and are together about as long as the lobe. The labial palps have 
two joints of about equal length; the basal is stouter than the 
distal. 
The terga are traversed, except in the terminal segment, by a 
median longitudinal groove or suture which does not, however, 
extend across the slightly darkened transverse band by which 
each is bordered behind. Each segment except the last bears 
laterally a few long erect hairs. 
The last segment bears on each side two stout backwardly- 
curved spines, of which the posterior is followed dorsally by 
three similar spines. The last four form a straight line lying ob- 
liquely across the base of the long terminal spine. The terminal: 
spine bears two long erect hairs rather more than half way along 
the ventral surface. One such hair is associated with each of the 
smaller spines, except the middle one of the three above the 
base of each terminal spine; and six are arranged in a semicircle 
