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 3rd abdominal segments are divided into two subsegments, 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 3rd 

 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 segment 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 on a 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 on a 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 larvfe of P. villosella, i.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) larvae, 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 

 toAvards 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 



