126 SPHINGID^. 



absence of the round subbasal costal patch, which is occa- 

 sionally indicated in the present species by a longitudinal dash, 

 Abdomen with mesial line which is not dilated to a patch on 

 the eighth tergite of the $. From the continental form of 

 ■substrigilis, with which liturata is easily confused, it can be 

 distinguished, apart from the different sexual armature, 

 by the base of the hind wing being less tawny and never black 

 and by the submarginal line of fore wing being more proximal 

 posteriorly. 



Some of the £$ are as pale as the $<£, while others are 

 deeper in tint and have a more distinct violet-grey gloss on 

 the fore wing. Expanse : $ 106 mm., $ 106-134. mm. 



cJ. Eighth abdominal sternite bisinuate, being rounded - 

 convex mesially (fig. 21 J), the edge of this lobe thickened 

 internally, which gives the edge the appearance of being- 

 bent internad. Tenth sternite similar to that of placida, 

 being more deeply sinuate than in substrigilis. Harpe (fig. 21 K) 

 with an almost vertical submesial process at the distal end of 

 the submesial ridge ; distal process very broad, spoon-shaped. 

 Penis-sheath (fig. 21 L) with two dentate folds, which are 

 unequal in length ; the strongly chitinized dorsal part of the 

 sheath prolonged into a short obtuse process. 



$. Vaginal plate (fig. 21 M) with a very large vaginal 

 cavity ; proximal part of plate membranaceous, edge of 

 cavity raised to a folded ridge which is mesially sinuate, 

 here less chitinized than laterally ; distal part of plate rounded, 

 transversely multicarinate. Eighth tergite mesially mem- 

 branaceous, the strongly chitinous plate deeply incised. 



Hah. E. Himalayas (Sikkim ; Assam), Burma and China. 

 Mell has bred this subspecies in S. China. 



Egg. — Broadly ovoid, surface smooth and shining, colour 

 a fine green. Length 2 mm. ; breadth 2-3 mm. 



Larva : — 



Final instar. Shape as in others of the genus. Head 

 triangular, horn long, slightly up-curved. Surface of head 

 smooth, with a few minute tubercles on the apex of each 

 lobe. Body dull ; no tubercles on the secondary segmental 

 rings ; a single line of long conical tubercles starting sub- 

 dorsally from the front margin of segment 2 and becoming 

 dorso-lateral on 3 to 11 ; the tubercle at the front margin of 

 2 to 5 is the largest, the tubercles then decreasing in size to 

 the hind margin of each of these segments ; from 6 to 1 1 the 

 tubercles increase in size from the front margin to the hind 

 margin of each segment. Horn without tubercles. 



Coloration.— Head greyish-green, with a white subdorsal 

 stripe from the apex of each lobe to the nape, where it joins 

 the subdorsal stripe of the body at the front margin of segment 

 2 ; a dark dot near each basal angle of clypeus. Body 



