HESPERIA MAISV2E. 235 



the anal comb has fewer teeth.] Fiflh instar : The fullgrown larva 

 is rather slender, much wrinkled, strongly pubescent, either greyish- 

 purple or greyish-green in colour, with dark and pale longitudinal 

 lines, and with a black pubescent head which appears a little too 

 large, and, as it were, not screwed quite home. Length 19mm. at 

 rest (22mm. when crawling). The head is large, but the much 

 smaller prothorax rather exaggerates the apparent size of the head. 

 The mesothorax is rather wider than the head, and the larva gradually 

 increases in bulk to the 3rd abdominal segment. The 3rd, 4th, and 

 5th abdominal segments are nearly of equal bulk. The body then 

 gradually decreases in size to the 1 Oth abdominal, which is bluntly 

 rounded. When viewed in profile the dip between the head and meso- 

 thorax over the prothorax is not so marked as in some other Hesperiid 

 larvae, especially as in that of Nisoniades tages. Segmental divisions 

 not well marked, though the segmental divisions are distinct. The 

 lateral flange is very heavy. Beneath, the larva is rather flat, though 

 the thoracic legs, as well as the abdominal and anal claspers, are of 

 moderate size. The head is black covered with pale ochreous hairs. 

 The prothorax brown with a purple tint ; the shield paler with a black 

 transverse line interrupted in the centre. The mesothorax ochreous 

 with dull purple-grey mottling on the ridges of the subsegments. The 

 metathorax and the abdominal segments are dull greyish-purple or 

 dull green, lighter in colour where the skin is folded, and much mottled 

 with pale dots and dull purple blotches, though less so on the 8th, 9th, 

 and 10th abdominals where the darker colour is less distinct. The 

 difference in general tint between the pro- and the mesothorax and the 

 rest of the larva is very marked. The dorsal vessel appears as a dark 

 line running from the mesothorax to the 10th abdominal segment, but 

 most conspicuous on those segments which bear the ventral prolegs. 

 The dull purple-grey subdorsal stripe is perfectly distinct, running 

 from the mesothorax to the 10th abdominal segment and is, next to the 

 dorsal vessel, the most conspicuous mark on the larva; it is bordered 

 above and below by a pale greenish-grey line. There is a supraspiracular 

 stripe, but it is more broken, and not so well-defined as the subdorsal, 

 though of the same colour. In the lighter-coloured individuals another 

 stripe is visible which runs along the thorax and first four abdominals, 

 between the dorsal vessel and the subdorsal stripe. It may here be 

 noted that in the dark individuals the pale lines only are conspicuous, 

 the dark stripes being merged in the ground colour. The spiracles are 

 ochreous, outlined in brown, and they rest on a thin pale line which, 

 however, is not always visible. Beneath, the larva appears of a darker 

 tint owing to the stronger purplish mottling, except on the 9th and 

 10th abdominal segments, which are paler in colour. This mottling is 

 caused by the pale tubercular spots breaking through the purple colour 

 which, besides being arranged in the usual above-mentioned stripes, 

 runs transversely along the ridges of the subsegments and longitudinally 

 along the flange and above the claspers. The chin-gland appears as a 

 dark purplish spot. The legs are black with paler rings, those, 

 however, of the metathorax have less black about them. The claspers 

 are dull green with purplish mottling, and the hooklets are brown. 

 Head flattened in front, not deeply cleft between the lobes, suture not 

 well-marked nor clypeal border very distinct ; epistoma light grey ; 

 labrum with ochreous-brown margin. The surface of the head is 



