134 [June, 



placed centrally except on the prothorax and first abdominal, on the latter towards 

 the posterior, and on the former towards the anterior margin. On the prothorax 

 and 8th abdominal it is as usual considerably larger than on the other segments, 

 while it is slightly enlarged on the 1st abdominal also, iv is on most segments 

 directly beliind the spiracle, but on some scf^nienls it is slightly above it; v is some 

 little distance below the spiracle and slightly anterior to it on most segments. The 

 marginal tubercle vii is single haired on the 1st and 2nd abdominal segments. 



Larore in 'Znd skin. — Head, pale brown, with two darker stripes down either 

 lobe. 



Body. — Anal and prothoracic plates pale brown, the thoracic and first abdo- 

 minal segments are bright grass-green on the dorsal area, on the following abdo- 

 minal segments this area is a duller and yellower green. A very broad bright grass- 

 green lateral band, narrowly margined with white extends from head to anus, its 

 lower margin just including the spiracles. The ventral area is both paler and 

 duller, yellowish-green from 2nd abdominal to anus, and bluish on thoracic and 1st 

 abdominal segments. There is a white medio-dorsal line and a similar subdorsal 

 one on either side. 



Avgust Qlh. — The first batch are now well grown in their 3rd skins. They are 

 neat and compact looking larrse, thickest at the 1st and 2nd abdominal segments, 

 tapering gradually towards anus and more rapidly to head. The colours are now 

 much darker, the dorsal and lateral areas are dark olive-green, the narrow medio- 

 and subdorsal lines still persist ; there is a dark lateral band which forms a hard 

 line between the dark upper-side and the pale ventral area, there are also several 

 faint dark lines between the lateral and subdorsal lines, and these together with 

 the black tubercles and pale brown hairs give the general effect of an olive-brown 

 back. 



On September 22nd I made a careful comparison between the 

 larvae of favicolor and those of pallens, and noted as follows: Batch 

 No. 2 of favicolor are in the same stage as those of pallens (about 

 I inch long). Those of Batch No. 1 are one moult ahead (about f inch 

 long). I could find no trace of any structural difference, nor any in the 

 markings, only some divergence in the general colour, but here one 

 was met by the difficulty of discriminating between how much was 

 individual and how much specific variation, as there was considerable 

 variation in this respect in the larvae of each batch. 



The only point of structural divergence noted seems to be that 

 of the size of the eggs, but as in the case of favicolor the diameter 

 was a matter of judgment and not of actual measurement, as with 

 pallens. This point should be accepted with caution until confirmed. 

 Description of the pupa of L. favicolor from a dead specimen 

 preserved in a weak solution of formaline. 



The specimen, which is a maje, is considerably shrunken, and the anal arma- 

 ture has apparently suffei'ed considerably either in removal from the cocoon or in 

 the post. Length 16 mm. ; greatest diameter at end of wing cases ; 4th abdominal 



