148 PAPERS BY DR. B. CLEMENS. 



one-third less long than the second. Maxillary palpi very 

 short. Antennas about one-half as long as the fore-wings, 

 simple and filiform ; basal joint short. Tongue scaled, about 

 as long as the anterior coxa?. 



/ytfcl^llt.M. tentoriferella. Labial palpi pale yellowish; basal half 

 I of the second joint blackish or dark fuscous. Fore-wings 

 reddish-ochreous, with dispersed dark-fuscous atoms. The 

 extreme base of the costa is blackish, from a small black spot 

 on its edge ; with three blackish-brown spots arranged in a 

 triangle in the middle of the wing, one about the middle of 

 the disk, another on its end, and one in the fold beneath them ; 

 cilia rather long and russet-coloured. Hind-wings rufo- 

 fuscous, along the discal portion of costa pale ochreous. 



The larva tapers posteriorly from the head ; terminal legs 

 short, placed posteriorly, projecting beyond the shield ; ab- 

 dominal legs short ; with papiliform points in squares, each 

 bearing a hair ; body cylindric and submoniliform. The head 

 is large, carried horizontally ; somewhat flattened above but 

 rounded ; cervical shield doubtfully indicated, its colour dark 

 green. Body dark green, at first uniform, but after the last 

 moult a double yellowish-green dorsal line is added. 



It may be found during the latter part of July on the 

 leaves of wild cherry, oaks and hickories. On the underside 

 of the leaf it throws a closely woven sheet or web from the 

 mid-rib to the side of the leaf, and draws it into a shallow 

 fold. This sheet or tent is not much longer than the larva 

 itself, open at both ends, transparent, shining and vitreous. 

 Beneath this it rests during the day, and in the night leaves 

 it to feed on the edges of the leaf, retreating to its cover if 

 alarmed. To this it clings most tenaciously if disturbed, 

 thrusting its head from beneath it, shaking it from side to side ; 

 or if disturbed in front, retreats, without leaving it, and 

 defends itself stoutly Avith its mandibles. Its length is about 

 half an inch. When it leaves a leaf to form a new tent on 

 another, it always devours the silk of the one it deserts. 



During the latter part of August or first part of September 



