298 THE entomologist's RECOftt). 



regular dark marks near spiracles (which are inconspicuous). Inside 

 (and in some degrees round) the dorsal spots and outside and behind 

 the outer ones are pale areas, giving an effect of pale longitudinal 

 markings. The outer spots and markings correspond with the row of 

 faint prominences already noticed. Ventrally the segments are very 

 contracted. On 9th (.Stb is so narrow that they seem at first to be 

 on 8th) are two raised points (the cremastral eminences of moulting), 

 nearly black, very small, with the male tubercles between them, very 

 flat and inconspicuous ; anal scar well uuxi'ked.— T. A. Chapman, M.D., 

 Betula, Reigate. June 14///, 190B. 



Larva of Spilothyrus lavater.e. — A Ilcsperid larva, found April 

 20th in the Val Verzasca {circe 1800ft.), on Star/u/s recta. It forms a 

 little nest of partially-eaten leaves, held together with a few strong 

 cables of silk. It may be in last instar, but is probably in the penul- 

 timate one. Size. — Length uncxtended, 12mm. ; width, Hmm. ; 

 width of head, l-5mm. ; of neck (prothorax), l-lmm. Form. — It is 

 of about uniform size from mesothorax to 8th abdominal, with a 

 marked subspiracular flange, apparently the yrd or lowest of the 

 theoretical three members of the lateral flange. Segmentation. — 

 Dorsally each abdominal segment is divided into three subsegments, of 

 which the middle is the narrowest, but is broader below, merging in 

 first about level of spiracle. The posterior is not quite so wide as the 

 front one, but is rather fuller, i.e., more rounded. Colour. — Head 

 black ; prothorax yellowish, more fuscous posteriorly, with a dorsal 

 plate somewhat interfering with the general yellow effect, being black 

 along its posterior margin, yellowish-brown in front. The remaining 

 segments are nearly identical in colour. Dark dorsally, yellow laterally, 

 much modified by the greater or less expression of pale colour round 

 the bases of the secondary haus, giving a mixed or marbled colon)'. 

 These factors result in a narrow (nearly) black dorsal line ; the dark 

 ground colour continues down to the immediate supi'aspiracular level. 

 The lower part of this above spii-acle forms a dark band. The rest of 

 this area is pale grey, owing to the pale hair-spots, the darker colour 

 suggesting, however, two Idack lines at nearly eijual intervals from 

 above down. Ikdow this area the ground colour is paler, becoming 

 light yellow on the subspiracular ffange. The darker colour still 

 persists, however, in a few irregular markings somewhat concentric 

 round the spiracle. The underside is fuscous, the yellow prolegs 

 looking conspicuous. Hairs. — The larva is conspicuously clothed 

 with white hairs. These all appear to be secondary ; the longer are 

 bent or curved about the middle, and are about Imm. long; there are 

 also a good many shorter. There are twenty or more of the longer 

 white hairs on each side of the head, also much more numerous short 

 black ones, some so short as to be a mere pile or spicules, and some 

 (apparently) clubbed. On either side, beside the top end of the 

 clypeus, is a small yellowish mark caused by short yellowish hairs. 

 Some of the white hairs of head and prothorax have a black spot close 

 to top. It is not clear whether this is true coloration, or a result of 

 touqhing sap of food. The hairs are few on the dorsal black line, 

 more abundant on the next region, where their pale bases are an 

 important item in the coloration ; again, rare on the yellow lateral 

 flange, and present, but shorter, below. Tubercles (?). — There are cer- 

 tain curious structures that are probably the true tubercles, but by no 



