188 THE entomologist's kecord. 



marked. The ball-like pads on the niesothorax, the metathorax, and a smaller 

 one on the prothorax are furnished with a claw which is probably the terminal 

 joint of the true thoracic legs, the other joints being hidden in the pads. There 

 are four pairs of abdominal prolegs, all without crotchets. The pairs on the fourth 

 and fifth segments are very well developed as already described. The anal claspers- 

 are rudimentary. The setaa are well developed and placed on strong simple- 

 tubercles. The tubercles are much in their usual positions except i, which is 

 placed further from the mediodorsal line than ii. This strikes one as being 

 peculiar, but this position of i is found in other microlepidopterous larvas. There- 

 are a large number of skin hairs or pile. The thoracic shield is dark brown but 

 undivided. The body is shining pale grey with a pale green mediodoi'sal stripe. 



liJiUXA -. — Fourtli inatar. Length 6mm. Width of head 0-4mm. The larva 

 in shape is mnch the same as in the 3rd instar, but it is much more active and 

 crawls rapidly about. The head is light brown. The prothoracic shield is dark 

 grey divided medially by the paler band. The body is pale yellowish waxy grey. 

 A broad green band runs dorsally from the mesothorax to the sixth abdominal 

 segment. The tubercles are the same as in 3rd instar. Tubercle iv carries a long 

 bristle, but both tubercle and seta are quite normal, not in the least like iv in 

 Ceiniontoma scitellu. The abdominal prolegs carry a single circle of from 14-15 

 black crotchets, while the anal claspers bear about 17 crotchets arranged in the 

 usual horse-shoe manner. 



Pupa :- — The pupa is very flat. The limb-cases reach almost to the end of the- 

 body. They are all strongly transversely wrinkled. The antermal eye-caps are 

 very conspicuous. There appears to be no armament of bristles nor any 

 cremaster. 



The Coloration Problem. A Rejoinder. 



By Rev. G. WHEELER, M.A., F.Z.S., F.E.S. 

 When I first read Mr. W. Parkinson C.urtis's article, as published. 

 in the last number of the K)it. Record, it was already in type, and it 

 was too late, without unduly embarrassing the Editorial Secretary, to- 

 do anything more than append a foot-note (see p. 156), the expressions 

 in which it is now incumbent on me to justify, more particularly since 

 I find that Mr. Curtis acted under an entire misapprehension as to the- 

 purpose of my correspondence with him. I cannot imagine how this 

 misapprehension arose, but of course I do not suppose that he had any 

 intention of treating me unfairly, and am sure that he felt himself 

 justified in the course which he adopted. That my letter to which 

 reference Avas made has never been published is an undisputed fact ; 

 that I did not intend it to be replied to in any publication I thought- 

 Mr. Curtis would infer from the fact tbat it was adunttedly both in- 

 complete and hurried. In the first paragraph the followmg sentence 

 occurs : — " Even now I am only able to treat it in the most cursory 

 way, and not at all with the thoroughness that the subject and your 

 treatment of it deserve. Please forgive me if I ' rush ' a few points- 

 and leave others alone." There were also in my letter other matters 

 which made it impossible to publish it as it stood, a view in which 

 Mr. Curtis entirely concurs. My letter then was not merely un- 

 published, but I thought obviously "never intended for publication."' 

 Mr. Curtis however supposed that he was expected to answer it in his 

 article, on account of the circumstances under which the correspondence 

 arose, and of which he has asked me to give some account. In 

 September last the Editorial Secretary. sent me Mr. Curtis's original 

 article, and as I knew that important papers bearing on the subject 

 would appear in the Transactions {^and Proceed inijs.) of the Kntn- 

 loijical Societij before the article in question could possibly 



