44 THE ENTOMOLOGIST S RECORD. 
tially decayed. The empty pupal-skin protrudes beyond the case from 
the 4th abdominal segment, and is of a pale yellow-brown tint. 
Larva.—The larva is very similar in many respects to those of the 
larger Psychids (e.g., P. villosella) in colour, but differs somewhat in 
structure, the body is more even in thickness and the difference in size 
between the abdomen and thorax is not so noticeable. The head is 
rounded, partly retractile, prothorax has a polished corneous surface. 
The prothorax is of less girth, but considerably longer than the meso- 
thorax and metathorax. ‘The metathorax, the 1st and 2nd abdominal 
segments, and to a less extent the mesothorax and 3rd abdominal, are 
shorter (front to back) than the remaining abdominal segments, they 
are also slightly less in width (laterally); the 8th, 9th and 10th 
abdominal segments are also small. The segmental incisions are 
distinct ; the thoracic segments not divided into subsegments; the 1st 
to 8rd abdominal segments are divided into two subseements, the 
subdivisions of the remaining abdominal segments vague, 4, 5 and 6 
appear to have at least three weak subdivisions. A well-marked ridge 
runs along each side, the skin much puckered (less so, however, than 
in the larger species—P. villosella) ; it is produced along the 8rd 
thoracic segment (a character rather less marked in the larva of P. 
villosella). The spiracles are distinct; on the abdominal segments 
they appear to be raised or slightly stalked, this is less distinct on 
abdominal seement 8, and not so at all on the prothorax; the spiracles 
on the prothorax and 8th abdominal segments are placed on the 
posterior portion of the segments (as in the larger P. villosella), whilst 
on the other segments they are nearly central or only slightly towards 
the anterior portion of the segments. The thoracic segments are 
chitinous like the head, and are mottled black and white (or yellowish- 
white), the mottlings take the form of alternate bars, which may be 
described as being white bars ona black ground, forming a medio- 
dorsal, and subdorsal and two lateral bands on either side, although 
the white has spread so much that one might just as well call them 
black bars on a white ground. (I feel satisfied, however, that they 
originated as whitish lines ona black ground.) The tubercles are single- 
haired, the hairs fine, weak, simple, tapering, but comparatively long 
(they are longer on thoracic segments and the head than on the abdominal 
segments). On the abdominal segments they are placed dorsally and 
arranged as in the larve of P. villosella, 7.e., they are placed in trape- 
zoidal form with i nearer to the median line than ii, the posteriors (ii) 
bear rather larger hairs ; laterally, they are also as in the larger 
species, iii fairly strong, iv and v weak, close together, v very weak ; 
this pair are almost directly below the spiracle, iii a little in front (of 
course well above) ; iv and v are on the lateral flange. Another 
tubercle vi, with hair, is placed well below the ridge, and vii is just 
above the base of the prolegs. The thoracic hairs appear to be placed 
exactly as in the larger Psychid (P. villosella) larvee, except that iv 
and v are placed farther apart than in the larger species. The 
dorsal tubercles on the anterior abdominal segments are surrounded by 
large chitinous plates which get smaller as the segments recede 
towards anus, although those on the 8th, 9th and 10th are chitinous, 
especially the 10th which is dark. The skin of the abdominal seg- 
ments is chitinous (especially 1-3) on the raised areas, independently 
of the tubercles. The true legs are large and strong (the third pair 
