OXYAMBULYX. 133 



of body and wings slightly paler yellow than in South Indian 

 0. s. aglaia. On fore wing a pinkish-brown subcostal spot 

 close to upper cell-angle between SC 4 ' 5 and R 1 , only a minute 

 yellow dot separating it from that angle ; outer fourth of 

 fore wing rather densely and coarsely irrorated ; grey terminal 

 band continued to tornus as a thin line. Median band of 

 hind wing touching lower cell-angle. Expanse : 100-110 mm. 



$. Eighth tergite, as in 0. substrigilis, without distinct 

 median lobe. Ninth tergite somewhat broader in dorsal aspect y 

 its frontal margin less deeply sinuate. Compressed apical 

 portion of tenth tergite slightly wider in a lateral view, and 

 its tip without the right and left ridge present in South Indian 

 0. s. aglaia. Tenth sternite intermediate in shape between 

 these sclerites of 0. substrigilis and 0. belli, the lobes being 

 broader than in the former species and narrower than in the 

 latter. Clasper and its armature as in 0. belli, but with fewer 

 and smaller subventral teeth. Penis-sheath similar to that of 

 0. s. substrigilis — that is, slightly stouter than in 0. s. aglaia. 

 and the right side dentate ridge longer (the left side in a dorsal 

 view with the tip-sheath directed upwards). 



Hab. S. India (Kanara District), where we have bred this 

 species. Very rare, only four larvae having been found, in 

 forests of heavy rainfall up to 2,000 feet elevation, and three 

 $$ and one $ obtained from them. 



Egg. — Not known. 



Larva : — 



Final instar. Head triangular, broad, vertex broadly rounded, 

 without processes or tubercles ; true clypeus about one -third 

 length of head, apex acute, basal angles rounded and tumid : 

 false clypeus with acute apex rising little above apex of true 

 clypeus ; labrum one-third length of clypeus, three times as 

 broad as long ; ligula four times as long as labrum, nearly 

 covering mandible, shaped like a sausage constricted in the 

 middle ; eyes 1 to 4 in a gentle curve, 1 and 2 and 3 and 4 

 two eye-diameters apart, 2 and 3 less than one diameter 

 apart ; 6 in line with 3 and 4, and three diameters from 4 : 

 5 two diameters from 4 and three diameters from 6. 

 Surface of head moderately shining, very superficially 

 and irregularly corrugate, and with a few minute glassy 

 tubercles ; surface of labrum rugose, with a broad, deep, 

 dorsal channel. Body similar in shape to that of 0. belli. 

 but tapering more strongly frontad ; surface dull. Horn long, 

 straight or gently down -curved throughout its length, tapering 

 evenly to a blunt point. A transverse row of very small, low 

 tubercles along each secondary ring ; a dorso-lateral line of 

 slightly larger tubercles on segments 2 to 11. Horn covered 

 with small, low, glassy tubercles and a few larger ones ; similar 

 tubercles on anal flap and claspers. 



