ABNORMAL APl'KAK AXC:K OF LKPIDOPTKHA. lS7 



gnawing, necessitates its remaining in tiie Cambium region, 

 between the bark and wood of recently- felled timber, may 

 be uncertain, but the larval course (like that of the parent 

 Hylesiiii) was invariably inside the bark, slightly infringing 

 on the wood at the extremity of the course for the oval 

 cell to accommodate the pupal change. This change had 

 commenced about the 24th of July — that is, about three 

 months from the first appearance of the Hylesini in April, 

 the pupae being then fairly numerous, in the cells at the 

 extremity of the channelings, tightly filled throughout 

 (down to the shiny exterior of the egg chamber projecting 

 into the empty main gallery) with the rejected remains of 

 their excavation. The full development to the beetle state 

 began about three weeks later, continuing over a lengthened 

 period. 



The illustration is mainly sketched on a rubbing from a 

 specimen of the galleries exposed by removing the bark, so 

 as to be almost an exact facsimile, and shows the large 

 proportion of larvae which perish from want of room ; and 

 the occasional contortion of the course of one larva, where 

 the close contiguity of the mother-galleries has caused the 

 destruction of almost all the larvae in the enclosed space. 



Spring Grove, near Isleworth, May 2, 1877. 



ON THE ABNORMAL APPEARANCE OF COLIAS EDUSA 

 AND OTHER DIURNAL LEPIDOPTERA IN 1877. 



By John T. Carrington. 



So many have been the communications to the 'Ento- 

 mologist' on this subject during the past month that I 

 think it worthy of some remark. Excepting in the extreme 

 north of these islands the past winter was one of exceptional 

 mildness, with more than the average rainfall. This was 

 followed by a cold spring, and a predominance of continued 

 easterly wind, which even at the time of writing has not 

 changed. Latterly, however, bright skies and brilliant 

 sunshine have made the days hot, while the nights have still 

 been comparatively cold. I hear from correspondents in 

 many parts of the country that this may be considered as yet 

 a late season : several species now due have not as yet 



