No. 2305. ON SOME FOREST LEPIDOPTERA—HEINRICH. 83 



wit!i slight lateral projections on the segments^ not extending beyond 

 middle of wings; wings short, hardly extending beyond 3rd abdom- 

 inal segment; glazed and sculptured eyes indicated; mandibles 

 conspicuous, roughly produced; labial palpi well developed with a 

 paired thorny projection from middle ; labrum sm.all; clypeus scooped, 

 with two pair of setae, strong lateral ridges, and a strong, spoutlike 

 projection at base; front with a prominent cephalad projection; 

 two cuplike protuberances on cephalic margin of genae approximate 

 to lateral margins of front; coxae of pro, meso, and metathoracic 

 legs clearly indicated; pro and mesothoracic legs not extending to 

 end of wings; metathoracic legs extending a trifle beyond end of 

 wings; mesothorax more than twice as long as pro thorax; a strong 

 median dorsal ridge on front, pro, and mesothorax; abdomen with 

 segments 3 to 6 free (female) and with double row of dorsal spines 

 on segments 3 to 6 and a single row along cephahc margin on 

 segments 7, 8, 9 (female); genital opening single and slitlike; anal 

 opening at extreme caudal end of body, slitiike; no caudal setae; 

 cremaster absent; a pair of stout thornlike spines at caudo-lateral 

 extremities of abdomen on each side of anal opening; spiracles round, 

 produced, moderate. 



Specific description — Larva. — Full gro^^^l about 30 mm. long; 6 to 

 7 mm. wide at middle of abdomen. Body china white, unmarked; 

 legs white with black or blackish brown tarsal claws; crochets of 

 prolegs pale brown, weak, 38-42 ; thoracic shield pale yellow, weakly 

 pigmented and thinly chitinized; anal shield unpigmented; body 

 tubercles small, unpigmented, v/eak; hairs short, whitish yellow; 

 spiracles moderate, round, brown. Head pale yellow; a small 

 brown spot at lateral angles of hind margin; antennal ring and ante- 

 rior marghis of epicranium and mandibles dark brown shading to 

 black; more heavily chitinized parts of labium and maxillae pale 

 brown; head setae whitish yellow; ocellar pigment black, not con- 

 tinuous. 



Pw^a.— Pale smoky brown; dorsal abdominal spines, chitinous 

 projections of head and caudal extremity dark brown to black; 

 cephalic rows of spines on dorsum of abdominal segments twice 

 the size and approximately half the number of those in caudal rows ; 

 pro thorax roughly rugose on dorsum; micsothorax smooth; labial 

 palpi reaching to extremities of maxillae; coxae of pro thoracic legs 

 smaller than mesothoracic coxae; mesothoracic coxae extending 

 half the length of pro thoracic legs; prothoracic legs but very little 

 shorter tlian mesothoracic legs; mesothoracic legs somewhat over 

 three-fourths as long as wings; average length (female) 18 mm. 



1 Evidently the "pectinate antennae" of Mosher. 



