SMERINTHINuS. 9 



arched at the base, extending to apes ; subcostal with a short oblique spur ascending 

 and joined to costal ; two subcostal branches from immediately beyond end of the 

 cell ; discocellular outwardly oblique, upper end angled in the middle, above the 

 radial; middle median at one-fifth and lower at one-third before end of the cell; 

 submedian and internal vein slightly recui^ved. Body large, laxly squamose ; thorax 

 short ; head small ; palpi obtuse, compact; antennae large, long, strongly pectinate 

 in male, tip slender {M. Dyras). 



MARTJMBA CEYLONICA (Plate 79, Fig. 2, ? ). 



Triptogon Oeylonica, Butler, P. Z. S. 1875, p. 255 ; Trans. Zool. Soc. 1876, p. 587. 

 Smerinthus JDyras (part). Walker, Catal. Lep. Het. Brit. Mus. viii. p. 250. 



Pale olivaceous brownish-ochreous : forewing with a short brown basal streak, 

 three transverse antemedial slightly waved lines, of which the first is outwardly 

 oblique and the third inwardly oblique — thus nearly toxiching one another on the 

 posterior margin ; a parallel postmedial line, followed by two less distinct waved 

 lines, an irregularly undulated line which is slightly sinuous at the costal end and 

 curved over a black spot before the posterior angle ; from the costa before the apex 

 extends a duplex line to posterior angle : hindwing pale reddish-ochreous, anal angle 

 pale brownish-ochreous, marked with two dark purple-black spots. Thorax and 

 abdomen traversed by a brown dorsal line ; palpi, and legs above brown. 



Expanse, c? 2|, ? 3| inches. 



MAEUMBA DYRAS (Plate 78, Fig. \,la,l,c, S ? , larva). 



Smerinthus Dyras (part), Walker, Catal. Lep. Het. Brit. Mus. viii. p. 250 (1856). 

 Triptogon Dyras, Butler, Trans. Zool. Soc. 1876, p. 586. 



Very similar to M. Oeylonica. Differs in being larger and darker coloured ; the 

 forewing having four brown transverse antemedial lines, two postmedial lines, and 

 the irregularly undulated line not sinuous at the costal end ; below the dark purple- 

 black spot is also a dash of the same colour before the angle : hindwing similar, but 

 darker. 



Expanse, S Z^, ? 4J inches. 



Ijarva pale green, bluish-green when adult, covered with paler short granular 

 spines; a lateral band on fifth to last segment; horn spinous; head triangular, 

 flattened in front, with a pale whitish streak down the cheek; a short serrated 

 longitudinal lateral streak on the third and fourth segments. Pupa dusky red, with 

 black segmental bands, and short exserted proboscis. 



"Feeds on SterculiaceEe, &c." (Thwaites.) 



VOL. II. 



