the middle with large dots; median notch of anterior margin deep; posterior- 

 angle sclerites straight, with blackish brown base and a steeply curved end. 

 Seta 1 light, situated on a membrane among small hairs; setae 4 also small 

 and yellowish, situated lateral to the median notch; setae 2 and 5 dark 

 brown, large, larger than the others; seta 6 similar, but smaller than setae 2 

 and 5; seta 3 situated posterior to seta 5, light and curved inward. 



(280) 



FIGURES 313 and 314. Himalopsyche gigantea Mart.: 



313 - left mandible, dorsal and right mandible, ventral; 314 — part of 

 head, ventral, gula.pregula.postgula and maxillolabium. 



Mandibles (Figure 313) chestnut brownish, massive and relatively short, 

 with a broad outer surface and a lighter, narrow apex. Distal tooth 

 of left mandible broad, slightly pointed or blunt (before molting); short 

 upper blade with a pointed terminal tooth; lower blade with a similar tooth 

 and a broad, projecting, serrated part; the apex of the mandible thus bears 

 3 denticles; characteristic large tubercles present near the base of the 



301 



