224 JOURNAL, BOMBAY NATURAL HISTORY SOCIETY, 1890. 



second about twice as large as the first) the third about three times as 

 large as the second, the two lower spots with their inner ends con- 

 vex, their outer concave ; all these spots diaphanous lustrous white ; 

 a somewhat elongated opaque yellowish spot in the submedian inter- 

 space placed against the middle of the submedian nervure ; the base 

 of the wing clothed with long dull ochreous hair-like scales. Cilia 

 of a slightly lighter shade of colour than the ground. Hindicing with 

 the base and abdominal margin thickly clothed with long dull 

 ochreous setae, the disc with a faint whitish discal macular band. 

 Cilia whitish. TJndekside, forewing fuscous, the costa and apex 

 widely ochreous-ferruginous ; the diaphanous spots as above ; a 

 broad submarginal whitish patch just anterior to the middle of the 

 outer margin of the wing. Hindwing ochreous-ferruginous bearing 

 a large triangular patch of white, which occupies all the surface 

 except the costa and the outer margin widely, and a tripartite 

 patch of the ground-colour divided by the median nervules in its 

 middle ; all the veins that reach the outer, margin white. Head, 

 thorax and abdomen fuscous above, white beneath, the latter striped 

 with white at the sides. Antenna? black throughout. Female almost 

 as in the male, but in two specimens out of three in the forewing, 

 there is a fourth smaller discal spot in the lower discoidal interspace, 

 and still another in the submedian interspace almost touching the 

 first median nervule and very small. Hindwing with the discal 

 macular white patch more prominent than in the male. 



Nearly allied to the " Hesperia " semamora of Moore,* originally 

 described from Bengal, but occurring in Sikkim, Assam and 

 Burma, from which it differs in all the diaphanous spots of the 

 forewing being larger, the opaque spot in the submedian interspace 

 always present (in P. semamora it is found in the females only, and 

 is very small), and notably in the large pure white anal patch of 

 P. semamora being replaced by a whitish shade only in the males, 

 rather more prominent in the females in P. ivatsonii. On the underside 

 of the hindwing there is always a large patch of the ochreous-ferru- 

 ginous ground-colour in the middle of the white area, this is only 

 occasionally present in P. semamora, and is when present very small. 



• Proc. Zool. Soc. Lond., 1865, p. 791. 



