No. 2305. ON SOME FOREST LEPIDOrTERA—HEINRICH. 73 



ture Aa postero-laterad of A3. Lateral seta (LI) in a line with 

 A3 and A2; as far from A3 as A3 is from AS; lateral 

 puncture (La) postero-dorsad of LI as far from LI as LI is from 

 A3. Posterior setae PI and P2 close together, very slightly 

 forward of middle of head; PI a little forward of the level of Adfl, 

 on the level of LI; puncture Ph posterior to P2; Pa on the level of 

 and remote from Pb, as near to LI as to Pb. Ocellar setae and punc- 

 ture arranged in a right angle triangle; 01 ventrad and approxi- 

 mate to Ocellus II; 02 postero- ventrad of Ocellus I, directly pos- 

 terior to 01; 03 directly ventrad of 02, as far from 02 as 02 is 

 from 01; Oa dhectly between and equidistant from 01 and 03. 

 Subocehar stetae triangularly grouped; SOI remote from S02 and 

 S03; S02 and S03 close together; SOa approximate to S02, 

 on a line between SOI and S03. Genal seta (Gl) antero-ventrad 

 of the puncture (Ga). 



Labrum with median incision shallow and broadly U shaped; 

 anterior-lateral margins evenly rounded; lateral setae in a line well 

 within lateral margin, well separated; La2 slightly nearer to Lai 

 than to La3; La3 on extreme anterior margin; median setae in a 

 line; M2 equidistant from 211 and M3; Ml on the level of Lai, 

 slightly back of the level of La3. Epipharyngeal shield large, 

 elongate, situated well back of mediam incision of labrum which 

 is only wealdy chitinized. Epipharyngeal setae triangularly 

 grouped just behind anterior margin, moderately long, broad, trian- 

 gular, pointed. Epipharyngeal rods clearly indicated; posterior pro- 

 jections slender and moderately long. 



MaxiUulae with prominent, elongate, flexible fleshy lobs fringed 

 with spines; no blades. 



Specific description. — Full grown larva 5 mm. long. Body white 

 with nerve ganglia visible through the skin on ventra surface as 

 purple spots in all segments except abdominal 8, 9, and 10; in last 

 instar larvae, a well separated pair of similar purple spots on dorsum 

 of meso and meta thorax and 1st abdominal segment; legs white with 

 lateral margins of the joints narrowly lined with fuscous; around 

 each proleg below the coxal setae (VII and VIII) a narrow, smoky 

 brown chitinous ring; crochets 16-18, dark brown; thoracic and anal 

 shields smoky fuscous, somewhat more yellov/ish in some specimens; 

 median line of thoracic shield irregular, broadening posteriorly, 

 white; body tubercles small, dark brown (abdominal setae / and II 

 especially conspicuous); body hairs whitish, moderately long; spir- 

 acles pale, smoky fuscous. Head pale lemon yeUow with endoskele- 

 tai ridges, mandibles, and mandibular attachm.ents of epicranium 

 light amber brown; a short brown dash on each side at posterior 

 lateral angle; oceUar pigment blackish brown, distinguishing the 

 different ocelli but nearly continuous. 



