74 
MEMOIKS OF THE EATIOifAL ACADEMY OP SCIENCES. 
v4 
mm 
the sack-bearing AdeJa viridella (fig. 7), wbicli bas similar enlarged dorsal and lateral plates, not 
■only on tlie thoracic but also on the abdominal segment (hg. 3 I 2 ). 
The pupa of Hepialus is said by Chapman to differ from that of Tortrix, 
“in having the third abdominal segment free, but in a peciiliar and modi- 
fied manner,” etc. He does not refer to the mouth-i)arts. I also add a 
figure of the front of the head of the pui)a of Hepialus humiiU^ which, with 
that of (Enotns vireseensj from New Zealand, I owe to the kindness of 
Dr. T. Algernon Chapman. Tlie structure of the head is very peculiar. 
On the vertex are promhient callosities, giving strength to the head in 
breaking out of the cell. The eye is large, divided by a distinct line, the 
outer ]>art of the eye more or less corrugated. Directly under the eye are the 
large triangular maxillary pal|)i (fig. 31,4 u}jc,p,). The maxilhe themselves 
are short, but not shown in the figure. The clypeal region is narrow, with 
tubercles and rugosities; the labrum is scarcely 
differentiated from the front edge of the clypeus, 
but is slightly bilobate on the base. On each side 
are what 1 call the paraclypeal pieces or sclerites 
(p.), of the homology of which I am not sure, unless 
they are identical with the tubercles seen in most 
Lepidoptera on eacrh side of the labrum, and for- 
merly regarded as the mandibles. It is present, 
though small and reduced, in Hepialus. The labial 
palpi {mxJ p,) ai'e large and wide, and divided at 
the end. 
Fig. 3 I 3 represents the head of (Enotus virescens 
Donbleday. The paraclypeal pieces are not dilf eren- 
tiated ; while the labrum appears to be slightly dis- 
tinct from the clypeus, and excavated in the middle 
of the front edge, the labial palpi very 
short; the maxillary palpi are as in Heplahis* 
The iinderside of the end of the body of this 
pupa, including abdominal segments 8 to 10, is represented hj fig. 3 I 2 ; on the eighth segment is 
the well-developed toothed ridge, while eacli side of the segment is irregularly dentate. On the 
ninth segment (IX) are the rudiments of the male genital epening of the moth, a longitudinal 
scar situated between the usual two tubercles, while the vestiges of the anal legs of the larva 
(«.. ?.) are represented by the longitudinal flattened tubercles inclosing the scar or vestige of the 
anus. 
I have examined the pupa of the Australian Oncopera intricata (fig, 33) (in the specimen 
figured the right anteume was nearly obsolete) and of the Mexican Pliassus irinn()ularis H. Edw., 
-all of which present some remarkable generalized features. In Oncopera the labial palpi {mxJ) 
are visible; the entire piece is very wide at the base, and is divided at the middle into the two 
l)alpal cases. Between it and the deeply lobed labrum is a piece, unless the two lobes are the 
paraclypeal pieces, of the nature of which I am uncertain. Is it the homologue of the eye collar; 
and it so, are the two lateral portions the maxillary palpi ? The maxilhe themselves (j«.r) are well 
developed, but at their base are divided by an impressed line, representing a portion which I am 
unable to name. The three pairs of feet ai'e easily identified. The outer division of the eye is 
large, and the cocoon-breaker, consisting of two solid thick ridges on the vertex, adapted for 
breaking out of its cell in the tree it inhabits, are well marked. Abdominal segments 3-7 are 
free in the $ , and on 3 to G is a row of spines at each end; on segments 7 and S there are four 
transverse rows of stout spines, and on 1) two rows of small spines. There is no cremaster. On 
the underside of segment 8 is a row of about fifteen stout spines, and vestiges of three jiairs of 
abdominal legs are distinct. The pupa is provided on the abdomen with a few long seta?. 
The t)npa of Phassus (fig, 31) is remarkable. The larva bores into aver 3 "hard tree, according 
lio the late Mr, II. Edwards, who kindly gave me a si)ecimen of the pupa. The head is remarkably 
Fig. 34.— Pupa of Phassus tria7iyvlari8! A, end of body. 
