OXYAMBULYX. 119» 



on abdomen developing in the $ into a patch upon the eighth 

 segment, the strong curvature of the submarginal line of fore 

 wing, this line reaching the edge of the wing at M 2 , and by the 

 posterior bars composing the discal line of fore wing being 

 obviously arched. Fore wing ochraceous-clay colour above 

 in the £, nearly burnt-umber brown shaded with grey in 

 the J. A few spines on fore tibia externally near apex. 

 Underside, of wings much shaded with tawny in the basal area, 

 especially in the • abdomen and wings much less yellow 

 than in sericeipennis and placida. Expanse : <$ 110 mm., 

 Q 130 mm. 



c£. Eighth abdominal sternite (fig. 22 F) mesially very 

 slightly sinuate, the sinus limited on each side by a small 

 tooth. Penis-sheath (fig. 22 H) dorsally gradually narrowed 

 to a point ; it is devoid of any additional armature. The 

 harpe (fig. 22 G) has a very heavy, strongly curved, submesial 

 hook, which is the distal prolonged part of a double submesial 

 ridge ; ventral process curved downwards, rather blunt, 

 finger-like. Tenth sternite mesially lobed as in sericeipennis . 



0. Eighth tergite deeply incised. Vaginal plate (fig. 22 I) 

 similar to that of sericeipennis and schauffelbergi, the mesial 

 lobe narrower. 



Bab. E. Himalayas (Sikkim) and Burma. The early stages 

 not known. 



21. Oxyambulyx belli Jord. (Fig. 24 A, imago, B-H, genitalia ; 

 PI. I, fig. 8, & PI. II, fig. 1, larva ; PI. VIII, fig. 6, pupa). 



Oxyambulyx belli, Jordan, 1923, p. 186, figs. 1-7 (genit.) (North 

 Kanara) ; Seitz, 1928, p. 534. 



Imago. — <$$. A rather small species. General colour a 

 deeper ochraceous-tawny than in the other Indian species of 

 Oxyambulyx, with the exception of 0. subocellata. In markings 

 somewhat resembling 0. maculifera. Abdomen with an 

 indistinct dorsal line, which is not widened into a patch on 

 eighth tergite of the <£, the fine sometimes scarcely traceable. 

 Fore wing flushed with purple, especially in the 9> which is 

 darker tawny than the $ ; two dark olive subbasal spots, 

 the costal spot vestigial, in one 2 both spots ; the costal bar 

 of the outer antemedian line reaches hind margin of cell 

 at some distance from lower cell-angle, being less oblique than 

 in 0. maculifera and more oblique than in 0. ochracea ; disco - 

 cellular not inconspicuous ; in the £ the veins in outer two- 

 fifths of wing slightly darker than the ground, especially R 1 

 and R 3 , this outer area from R 1 backwards a deeper colour 

 than rest of wing ; olive-black submarginal line posteriorly 

 close to termen, accompanied by a pale fine as in other species, 

 but this pale line bounded on the proximal side by more or less 



