1878.J 279 



There is little doubt that vols. Ill to IV were published by StoU after the death 

 of Cramer, as there is a gap of two years between vols. II and III ; and there is in- 

 ternal evidence that everytliing after pi. 253 at latest should be attributed to StoU. 

 Vol. Ill, pis. 193— 2G4 was publislied iu 17V9. 

 2G5— 288 „ „ „ 1780. 



„ IV, „ 289—336 „ „ „ 1780. 



337—384 „ „ „ 1781. 



385—400 „ „ „ 1782. 



Stoll's supplementary volume is dated as follows : — 



Pis. 1—8 - - - - 1787. 



„ 9—42 ... - 1790. 



The title-page is dated 1791. 



There is, I think, little doubt that the dates on the title-pages may be neglected; 



that the dates on the wrappers of the parts, as above quoted, may be accepted as 



correct ; and that the III and IV volumes of the " Papillons Exotiques " should 



be attributed to Stoll. I have not been able to ascertain the precise date of Cramer's 



death. — W. F. Kirbt, Museum of Science and Art, Dublin : 'Lih April, 1878. 



Pupation of Elachista Oregsoni. — Early: in March I received from Mr. Sang, of 

 Darlington, a number of Elachista larvaj, which he believed to be those of E. Oreg- 

 soni. As soon as these larvte assumed the pupa state I was startled by an appearance 

 I had not before observed ; the entire pupa is protected and partially concealed by 

 a silken tent, just like the pupa of E. rufocinerea, which, till now, I had thought to 

 be the only species of the genus in which the pupa was thus protected. Erom these 

 pupa; sixteen specimens of the imago have now emerged, and I find that Mr. Sang 

 was quite correct in referring them to E. Qregsoni. 



It may be that Elachista nigrella has no distinct specific existence, and that 

 some error of observation has crept in, when a brown-headed larva was assigned to 

 E. nigrella. Probably, if ever E. nigrella sliould be freely bred, it and E. Gregsoni 

 would be found to be the same species. — II. T. Stainton, Mountsfield, Lewisham : 

 April \Wi, 1878. 



Description of the larva of Acidalia promutata. — On September 7th, 1875, I 

 received half-a-dozen young larvae of this species from Mr. J. Gr. Ross, of Eathanipton, 

 near Bath. They fed on Polygonum aviculare until hibernation, which, in their case, 

 extended over an unusually long period, as, in the spring following, they did not re- 

 commence feeding until long after other hibernating species I had had begun to do 

 so, although kept under precisely the same conditions. This, however, cannot bo 

 taken as the natural liabit of the species, whatever may have been the cause in this 

 case, as my larvae were consequently not full grown until quite the end of June, or 

 several weeks after the imagos ought to have been on the wing at large. Length 

 nearly an inch and a half ; the head has the lobes rounded and is of equal width 

 witli tlie second segment: body slender, cylindrical, and of almost uniform width 

 throughout, tapering very slightly indeed towards the head ; segmental divisions 

 tolerably well defined, but do not overlap each other, in the marked way which 

 characterizes so many of the species in the genus : skin distinctly, but very evenly 

 transversely ribbed. 



