142 THE bntomologist's record. 



roughened ; gi'oups of short, slightly thorny, pale brown or yellowish hairs 

 are present, as in / '. wonacha. On the abdominal segments, the hairs fringe 

 tlie slightly raised eentral bosses, probably sears of larval tubercles. The 

 anal armature is very similar to that of P. monacha. There is a 

 depression at the ventral base of horn, whieli is not only flattened, but 

 slightly grooved on ventral side, ihe spines at the top being nearly as 

 long and curled as in P. munacha. 



Leucoiiia salicis : Colour, black ; surface, polished ; hairs larger and 

 more numerous than in either P. monacha or O. dispar, of a bright 

 yellow colour ; they are of two forms : near the anus there are groups 

 of round and slightly thorny hairs, by far the gi-eater number are round 

 and simple, at base becoming flattened, ribbon-like, and twisted at the 

 top, while a few appear to be ribbon-like and twisted for the whole or 

 greater portion of their length. The anal armature is larger, and 

 rather more slender than that of either of the previously mentioned 

 species. The hooked bristles at the summit are smaller, more regular in 

 size, and better formed than in either P. monacha or 0. dispar. 



Purthi'sia similis {aurijlua) and P. chrysorrhoea : These differ con- 

 siderably from the other species in appearance, chiefly on account of 

 the hairs being less noticeable. P. siniilis (aurijiua) : Colour dark, paler 

 on free abdominal segment ; surface smooth, but can hardly be called 

 polished. The dorsal hump is very slight. The hairs are comparatively 

 few and small, ribbon- like, and somewhat twisted ; none are present on 

 ventral head-pieces. Numbers of the short iiTitating larval hairs are 

 mixed with them, and scattered over the sm'face of the pupa. The 

 anus ends in a smooth conical horn, and the armature consists of a 

 large number of long bristles or sjjines, each having the top curved 

 almost into a spiral ; these spines arise from the extremity of the horn 

 in a dense sheaf-like mass. The form and arrangement of these hooks 

 make an admirable means of obtaining a firm attachment to the cocoon, 

 and if once caught in the silk, the pupa can only be detached by 

 breaking either hooks or silk. P. chrysorrhoea : Colour a paler and 

 redder brown than in P. similis ; surface smooth, and inclined to be polished, 

 except on wing-cases. The case (skin) is more fragile than with P. 

 similis, and portions are almost transparent. Hah's as in P. similis, 

 but not twisted, as with this species the irritating larval hairs are 

 scattered over the surface and mixed with the pupal hau's. The anus 

 is prolonged into a tapering tube-like horn, very smooth and fragile ; 

 from the top arise a number of medium length spines, with spirally 

 emwed ends. 



Dasychira pudlbunda : Colour pale brown, dark on 1st to 3rd 

 abdominal segments ; surface smooth and polished ; dorsal hump 

 apparent. Hau's simple, colour yellowish ; they are few and small on 

 ventral area, but very numerous on dorsal, and of medium length ; so 

 closely are they set on dorsal area that they form bands right across the 

 segments, and no trace of the trapezoidal gToups can be discerned. On the 

 first four abdominal segments tlie surface is slightly raised and 

 roughened, ap})arently scars of the dorsal tufts on larva. On the lateral 

 area, supra-, post- and sub-spiracular gToups can be made out. Hairs 

 are present on dorsal head-})ieee, but 1 cannot see any on ventral head- 

 pieces or eye-covers. The anal segment ends in a gracefully tapering 

 horn, smooth and polished, and slightly flattened on ventral and dorsal 

 surface. Its top is black and rounded, covered with fine, short, hooked 



