330 ])r. T. A. Cliapiiian on larva of Lycaena ewpliemus. 



pupated satisfactorily, the cast skin is attached to the last 

 segment, but not more than often occurs in Lycaenids. 

 It will probably be reniovable, but the pupa is too immature 

 to meddle with. 



June 24th. — The pupa at first pale (very pale chitinous) 

 has got very dark, and the wing-cases are becoming de- 

 pressed. It is, therefore, obviously dead, due no doubt 

 to injury in trying to throw of? the black material of 7th 

 segment. This unfortunately makes a figure of it unattain- 

 able. 



My materials for describing the ])upa of L. cuphcmus 

 consist of the collapsed and discoloured ])upa obtained 

 from my larva, and a nearly or quite c()m])lete, but some- 

 what disintegrated, empty case obtained by Mr. Powell. 

 Of L. alcon, with which to compare them, 1 have an empty 

 case, a dead pupa with butterfly fully developed, and a 

 collapsed case. I should have liked to have mounted 

 portions of these and presented photographs of them, but 

 the deficiency of specimens and other difficulties prevent 

 this. So far as I have been able to examine them, I 

 have not detected any differences between the two species 

 that could be so demonstrated, though there are most 

 ])robably some small differences in hairs and lenticles. The 

 figures of L. alcon (Trans. Ent. Soc. 1919, PI. XXIII) 

 might fairly be taken to represent L. euphemus also, so far 

 as such magnification enables them to be represented. The 

 only difterence discoverable with a hand lens, and this 

 might possibly not hold in a longer scries, is as regards the 

 spiracles, which in L. alcon arc low dark chitinous cones, 

 and in L. euphemus are higher cones, only darkly chitinous 

 at top, and with a margin of delicate-looking white tissue. 



The pupae are about 11 to 12 mm. long, of the same 

 form and colour as in the above-mentioned plate, and are 

 unfortified by any definite forked or spiculate hairs. There 

 is no scar of honey-gland. 



Explanation of Plate XL 



'J'lu'ce aspects of full-grown larva of Lycaena euphemus Hb. 

 X 4. It may be compared with that of L. alcon (Trans. 1919, 

 Plate XXIII). For details of skin structure sec Trans. 1919, 

 Plates XXXIV et seq. It will be noted that the long hairs shown 

 on Plate XXX (Trans. 1919) are represented by only a few stumps. 

 (See Trans. 1919, p. 464.) 



