Orneodes, Epermenia, Chrijsoeonjs, and PteropJiorus. 137 



it is almost certainly not a member of the Adelid series, 

 and if it be, it is certainly at a great distance therein 

 from Orneodes. 



A point to be especially noted is the extreme divergence 

 between the pupa of Pterophorus and that of Pyrales. 



Pyrales have a pupa that is a true macro in dehiscence, 

 in possessing segments four and seven (abdominal) fixed 

 in both sexes, and possesses no micro characters except 

 a dorsal head-piece (a character that goes very high up), 

 maxillary palpi, and in some families appendages pro- , 

 jecting beyond segment four. 



Pterophorus is a true micro in dehiscence, has segment 

 four free, and seven free in male, the dorsal head-piece 

 is evanescent, and it has lost the maxillary palpi. 



It is impossible for one of these forms to be derived 

 from the other, and impossible for them to have a com- 

 mon ancestor higher up in the series than Tinea, more 

 probably that ancestor is much lower. 



Orneodes has a pupa of Obtect formula as to free 

 segments, and the dehiscence is of very nearly the macro 

 type. Antennas separating from head, and eye-covers 

 remaining attached to face-piece. It retains one, and only 

 one, very marked micro character, viz., the possession of 

 a dorsal head-plate ; not only so, but this plate is of 

 immense size, whilst the prothorax is correspondingly 

 reduced. Contrarily the pupa of Pterophorus retains 

 most of the characters of a Tnicro, the one that it has 

 almost lost is this head-plate, which is nearly evanescent, 

 although it retains the function of carrying the eye- cover 

 on dehiscence. 



Both have then been derived from the micro stirps, as 

 we know, indeed, that all pupae have been ; but the 

 routes have obviously been divided for so long a period 

 that it is justifiable to describe them as in nowise related, 

 less probably than any two families of macros. 



I present figures of the eggs of the four genera re- 

 ferred to in this paper, chiefly on account of the fact that 

 whilst those of Orneodes, Epermenia, and Pterophorus, 

 present features that ai-e frequent in many different 

 families of Lepidoptera, that of Glirysocorys is so unusual. 



The ova of Orneodes and Epermenia belong to the 

 section with horizontal micropylar axis and rough sculp- 

 turing, characteristic of the stirps we have been consider- 

 ing. Pterophorus has a horizontal Q^g, but with 



