iv 
Dr. T. A. Chapman on Catochrysops phasma. 491 
The head is black, very small for a larva of this size— 
0-7 mm. wide. The antero-posterior head measurement 
is about 0-4 mm. and of the neck 0:8 mm. It may or 
may not be stretched to its full length, but looks as if it 
were. Avion has a still smaller head—0-6 mm. across, 
but that species has a very special history as to 
moults, ete. 
The hairs on the front margin of the prothorax are 
numerous and a good many are as long as those above the 
legs, viz. 0-6 mm. ‘The prothoracic plate is not defined or 
tinted in any way; two flights of lenticles, one to either 
side of the middle line, may indicate its lateral wings. A 
few hairs about 0-25 mm. long are at the end of last seg- 
ment, and the bases of the prolegs have some hairs rather 
longer than the ordinary skin-point hairs. On each 
abdominal segment from 3rd to 6th there is a longish 
hair (about 0-3 mm.) at the middle of the segment, a third 
of the distance from the proleg to the spiracle. This has 
about it some hairs rather larger than the usual skin- 
points. Dorsally, in fact above the spiracles, there 
appear to be no hairs, except the fine skin-points. Each 
of what appear to be the usual skin-points carries a very 
fine hair, about 0-04 to 0-06 mm. long. Small lenticles 
are numerous. These are only about 0-03 mm. in diameter ; 
some have the usual dotted closing membrane, others have 
a central portion in the membrane somewhat denser, as 
though it represented an abortive hair. Most of the 
lenticles look as if the sides were conical frustra, nearly 
half their width in height. Below the spiracles they are 
less numerous—about 6 on the forward segments, in- 
creasing to 12 or 16 on the posterior. 
Above the spiracles, the segments are divided into an 
anterior and posterior subsegment by a narrow band 
defined by the skin-point hairs being wanting for some way 
above the spiracles, and, across the dorsum, by a want of 
lenticles. On the anterior subsegment are about 80 
lenticles irregularly disposed but most numerous above 
the spiracles, sparse dorsally. The posterior subsegment 
is divided into an anterior portion carrying a band of 
lenticles and a posterior without them; these number 
about 120; they are least numerous near the spiracles, 
but abundant on each side of the dorsal line, along which, 
however, they are absent. The spiracles, 0-12 mm. across, 
are brown (in the preparation), and are raised, by their 
ia hs 
sina acne). 
