un the pupe of Heterocerous Lepidoptera. a Pe 
habit, without having regained the correlated structure 
so far as the prolegs are concerned. 
Zygena has the 3rd and 4th, 5th and 6th (and 7th in 
3) abdominal segments free; it very markedly opens 
the other incisions on dehiscence, and has the other 
characters of a Micro dehiscence—head parts united 
together and separate from the others, internal pupal 
coverings very distinct, pupa emerges from cocoon, &c. 
It possesses ill-developed eye-collars (maxillary palpi). 
It is the only one I have noticed to retain the glazed eye 
with the head parts; they separate from the anterior 
prothoracic case, which is distinctly developed. The 
dehiscence is otherwise typically ‘‘ incomplete.” 
In Pterophorus the dehiscence is also characteristically 
incomplete, the free segments are (abdominal) 4, 5, and 
6 in the female, 4, 5, 6, 7 in the male. 
The remaining Incomplete (Micros) are not very easily 
divisible, but appear to form two groups that we may 
call Tortrices and Tinee, or rather Tortricoids and 
Tineoids, but I find a difficulty in stating any definite 
characters (pupal) to divide them. The best appears 
to be in the development of the maxillary palpi. In the 
Tinee these are always well developed in the pupe. In 
the Tortrices they are ill-developed or almost wanting. 
In Cossus, after dehiscence, the cases of the maxillary 
palpi are small but quite evident, and the same obtains 
in most Tortrices. 
There are, however, a few TZinee in which it is also 
ill-developed. 
Perchance the Tortricoids and Tineoids should be 
taken as one group and divided according to the seg- 
ments that are free, or a division might be made by 
defining the Tortricoids as having a row of spines along 
the hind margins of the segments. This would some- 
what vary the grouping. 
The Tortrices proper form the greater part of the 
section of Tortricoids. They are distinguished by 
having the 4th, 5th, and 6th segments free in both 
sexes, and the 7th also in the male, by having two rows 
of hooks for progression across the dorsum of each 
segment, and by the marked way in which the 2nd and 
3rd (abdominal) segments become free on dehiscence, 
whilst retaining a modified attachment to the wing cases. 
There are still many genera of Tortrices that I have not 
