28 JOURNAL OP ENTOMOLOGY AND ZOOLOGY 



Stigmal field (plate I, figure I) with the spiracles small, 

 dorsal, rounded or rounded-oval, widely separated; four slen- 

 der, elongate lobes around the stigmal field, one pair being 

 lateral and the other ventral. Lateral lobes with the inner face 

 having a narrow black line, this beginning as an enlarged black 

 spot just ventrad of the spiracle, reaching the tip of the lobe; 

 the dorsal outer edge of this lobe with a dense fringe of long 

 conspicuous reddish hairs, the inner edge of the row beginning 

 just laterad of the spiracle where the hairs are exceedingly 

 short, gradually becoming longer to the tip where they are as 

 long as the lobe itself. Ventral lobe with a narrow black line 

 on the proximal face which divides at the base of the lobe, the 

 ventral branch running along the ventral margin of the stigmal 

 field, the dorsal branch paler, spreading out across the stigmal 

 field and approaching its fellow of the opposite side on the 

 middle line ; a dense fringe of conspicuous reddish hairs on the 

 tip of the lobe and continued on the outer dorsal side for a 

 short distance toward the base. A few dusky brown spots on 

 the stigmal field between the stigmata; two small hairs occu- 

 pying the space between the stigmata. Underneath the caudal 

 lobes and behind the swollen penultimate segment are the four 

 caudal gills, short, stout, cylindrical, unbranched, the lateral 

 pair directed outward, the inner pair directed caudad. 



Described from abundant larvse from along Fall Creek, 

 Ithaca, New York, above the second bridge, in Forest Home, 

 May 1, 1913. 



PUPA, S 



Antennal sheaths elongated (plate II, figure E, plate III, 

 figure D), the tip of the sheath lying just before the end of the 

 middle metatarsus, in a few specimens even reaching beyond 

 the tip. Cephalic crest (plate II, E, b) very reduced, scarcely 

 projecting beyond the front level of the antennae; viewed from 

 beneath (plate III, D), it is somewhat quadrate, the fore lateral 

 angles produced into small pointed lobes bearing a long hair 

 at the apex; viewed from the side (plate II, E, b) it is seen to 

 be notched, there being a second lobe, subequal to the ventral 

 one in size, immediately behind it, this also bearing a large hair. 



