Hugh Scott 111 



violacea as figured by Kemner ((13) p. 206). He figures these structures in 

 five genera of Cleridae. There is a marked dift'erence between the pointed 

 hooks of Necrobia, and their blunt truncated form in Corynetes coeruleus. 

 Perris ({19) p. 52) remarks a similar dift'erence in comparing the hooks in 

 N. ruficollis with those of Corynetes ruficornis. 



Changes in setae and colouring during growth of larva. This 

 point does not seem to have been investigated before, but two young 

 larvae in my material indicate that such detailed changes do occur, as 

 might be expected. These young larvae are 4-25 4-5 mm. long (the 

 full-grown one figured is circa 10 mm.). 



The first has the head, prothorax, and tail-plate well chitinised, and 

 of much the same colour as in the full-grown larva. The dark markings 

 on the dorsal surface are rather sharply contrasted with the pale areas, 

 and the arrangement of light and dark is different from that in the full- 

 grown larva; there is no continuous pale mid-dorsal fine even on the 

 posterior segments, the dark area being continuous across the posterior 

 part of all the segments, and across the anterior part of the meso- and 

 meta-thorax and first two abdominal segments; the general disposition 

 of the pale markings is to form a transverse rather than a longitudinal 

 light mark across the middle of each segment. The setae are of great 

 length in proportion to the breadth of the body, some being as long as 

 that breadth, and these long ones occurring dorsally as well as dorso- 

 laterally. There are short setae as well and the general arrangement 

 appears to be in two transverse series on each segment, as in the full- 

 grown larva. 



The second small larva shows more marked difEerences from the full- 

 grown larva. Its setae are differently disposed to those of the young larva 

 just described, and it probably belongs to an earfier instar. Its head, 

 prothoracic and tail-plates appear less strongly chitinised and are paler. 

 The whole larva is paler, the dark markings being very faint, and not 

 nearly as sharply contrasted with the pale, and having the appearance 

 of faintly dusky areas of fine dots. The setae are much less numerous; 

 very long ones occur both dorsally and dorso-laterally, but the short 

 ones are comparatively few. The two transverse series can be discerned 

 on each segment, but each consists of but a single row very widely 

 spaced; each row appears to be composed, dorsally, of three very long 

 ones, a median and two lateral, with very few, or sometimes no, shorter 

 ones between them. 



The pupa is figured and described by Heeger. Fig. 2 is made with a 

 drawing apparatus from one of 14 pupae which I preserved. This 



