152 THE entomologist's record. 



find such a species so readily agree to be forced forwards and produce 

 an autumn emergence. 



I have made some complaint of the lumping of certain Erebias, 

 chiefly by Staudinger ; in the case of ('. peletieraria and C. nivearia, 

 however, I thought it very probable that his suggestion that they are 

 only forms of one species was correct. The males look very different, 

 one black, the other pure white, but the females are identical. I sent 

 larvjB to Herr G. Hofner at Wolfsberg, where (on the Sau Alpe) 

 C. nivearia is often abundant, and where I took it in 1897. Herr 

 Hofner had bred the insect, and was, therefore, a good authority to say 

 whether the larvte of the two species agreed. Herr Hofner tells me he 

 received the larvte safely, and gave them fresh food of trefoil and 

 dandelion. They took to the dandelion and fed on it, just as the larvfe 

 of ( . nivearia did. They were fullgrown and two pupated, mid- 

 October in moss he gave them. A male emerged on November 24th. 

 The larva of C. nivearia is brighter, but he cannot detect any decided 

 difference between those of C peletieraria and preserved larvae of 

 C. nivearia in his collection. He thinks that probably Staudinger's 

 suspicion of there being only one species may be correct, but does 

 not like to be positive, not having seen the ? of C. peletieraria. 

 He philosophises that, if you are ready to let colour go for 

 nothing, then ('. Intearia would also be merely a form of the 

 same species. It was, therefore, with the expectation of finding 

 the ancillary appendages in the two species practically identical, 

 that I prepared some specimens. The result, however, was to find 

 differences that are no doubt of specific importance, although both are 

 formed on a closely similar design. It will save much time and space 

 in description to show the photographs of the ancillary appendages. 

 It will be seen that, as regards the dorsal element (tegumen), Clutearia 

 and 0. peletieraria are xery similar, C'. nivearia decidedly different, 

 whilst, as regards the clasps, C. Intearia and C. nivearia are much 

 alike, whilst C. peletieraria has the armature of spines (really appar- 

 ently very short thick hairs) collected on a decided projection, instead 

 of spread along the harpe. The appendages confirm what we other- 

 wise know, that the three species are very closely allied, but also, 

 I think, confirm the view that thej^ have sufficiently differentiated to 

 be accepted as " good " species. 



Egg. — I first made acquaintance with the egg of ('. peletieraria 

 when some were laid on July 14th, 1904, by a ? taken at Pajares 

 (Asturias). I did not, however, rear them. They were large oval 

 eggs about 1-Omm. long, nearly circular in transverse section, the 

 diameters varying only from 0-60mm. to 0-66mm., and possibly 

 due to difterent sizes of eggs. The colour was nearly white. 

 The sculpturing difficult to see, but consisting of hexagonal net- 

 ting, the cells of which were about 0"025mm. in diameter. The 

 eggs laid by the Pyienean moths seemed to be much the same, 

 and I took no description of them, but I have photographs of the 

 empty shells, after the larvfe had hatched, by Mr. F. N. Clark and 

 Mr. Tonge. These indicate that the egg is about 0'9mm. long, that 

 it is somewhat flattened on one side, and that its two shorter diameters 

 are 0-6mm. and 0-7mm. Mr. Clark's photograph, in which the egg is 

 enlarged 100 diameters, shoAvs the sculpturing admirably. A photo- 

 grapher would perhaps complain of this picture as being largely out of 



