62 
MEMOIRS OF TUE NATIONAL ACx\.DEMY OF SCIENCES. 
I. PALEOLEPIDOPTERA {Pupa lihera ). 
The characters of the group are those of Micropteryx, as this is the only genus yet known.. 
Its larva has a well developed spinneret; tliough it has no abdominal legs, the other features 
are so truly lepidoijterous that the absence of legs may 
be the result of reduction by disuse rather than a primitive 
feature. 
The papa (fig. 5) lias entirely free antenmej mouth* 
parts, and limbs, and bears considerable resemblance to 
that of a caddis ily. It is a pupa libera. 
The mandibles (fig. o md,) are enormous and, as 
described by Chapman, are adapted for cutting through the 
dense cocoon. The ruaxilhe are separate and curled up 
on each side and partly concealed by the second maxil- 
lary (labial) palpi (lig. 5 mx. j>.), not extending straight 
down, as in the l*up(e bicompleim and obtectm; the maxil- 
lary i^alpi are situated just in front of the mandibles 
and extend outward and forward, reaching to the antenme. 
The labrum is deeply cleft and strongly setose, as is the 
epicraiiium; the clyi)eus is scpiare, with a singular white 
delicate membrane projecting from it, the use of which i& 
unknown. The hind legs extend beyond the end of the 
abdomen, which is simide, not terminating in a cremaster;, 
the sides of the segments bear a single large seta. 
The trunk characters of the imago are much as in 
Eriocephala. The head is larger and squarer; the eyes- 
very small; there are two ocelli present; the clypeus and 
labrum are sliort and small. 
The prothorax is very much reduced, much as in Erio- 
cephala; the metathoracic scuta show an advance over those 
of Eriocephala in being united on the median line instead of 
separated; the metascutellum is very large, longer and more scutellate than that of Eriocephala.. 
The shape and venation 
of the wings (fig. ti) are nearly 
identical with those of Erio- 
cephala, being long, narrow, 
and pointed, both pairs nearly 
alike in size, and except that 
on the hinder irdir there is a 
‘^jugui?i ” or angular aual fold ; 
the scales are of generalized 
shape all over the wings. 
Fig. 5.— Pupa of Micropterj/x purpurella, frout 
view; mandibles; mz. p, maxillary palpus; 
mx'.p, labial p.alpus; lb, labrum, with its long seta*. 
II. NEOLEPIDOPTERA. 
This series may be divided 
into two sections, correspond- 
ing in the main to the Fapw 
iiicompletw of Chapman (the 
Eriocephalidm and Microp- 
terygidie included by Chap- 
man being removed) and his 
Fiipcv obtectw, for the first of which we would suggest the name Tineoids, and for the second,, 
comprising the large broad-winged forms, Macrolepidoptera or Platylepidoptera. 
Fig. 6.— Venation of fore and hind wings of Micropteryx purpurclla; j, jugum, on each wing;. 
d. discalvein. I, costa; II, subcosta; III, media; IV, cubitus, etc. 
