THE COMMON BUTTERFLIES OF THE PLAINS OF INDIA. 751 



rows of long, delicate, feathery -looking spikelets, finely bifurcated at the tips, 

 placed at right angles to the polar axis of the egg and shghtly converging, 

 one row towards the other, at the points. There are 2 cells from the base to 

 near the summit of the egg and these spikes are situated where the walls 

 of the middle row of cells intersect with the walls of the top row of perfect 

 cells and the bottom row of half-cells. On the summit the egg is pitted 

 and has a rather large, central, circular, depression (micropyle). All the 

 cells are large, nearly regularly quadrilateral with rather high, fine walls 

 and are flat-bottomed. The cells round the equator are ten in number. 

 The colour is finely granulated green, the walls of cells and spikes being 

 white. B. : 0-6 mm. ; H. : 0'4 mm. 



Larva. — The larva agrees in all respects, in sha2)e and habits, with that 

 of the species of the genus Arhopala as represented by centaurus and 

 amantes. The head is hidden beneath segment 2, is shining black and 

 rather large. Segment 2 is semi-circular in shape, very slightly emarginate 

 in the dorsal line of front margin and the central dorsal depression is 

 semi-elliptical in shape with the convexity forwards, velvety black in 

 colour and with a dorsal, green line ; segment 3 somewhat suddenly 

 higher and broader than 2 ; segments 4-1 i nearly of coequal breadth and 

 length ; segments 12-14 decreasing in width, the anal segment rather flat, 

 dorsally and thickened round the free margin, broadly rounded at extre- 

 mity with a square velvety-black dorsal patch bisected by a fine, green, 

 dorsal line. The whole larva is depressed, being of the same height from 

 segment 4-10, both inclusive. The surface of the body is covered with 

 minute, short, light-coloured, sparsely-disposed, star-shaped hairs ; on the 

 black patches they are denser than elsewhere and black ; laterally corru- 

 gated with some rather deep pitting on the dorsoventral margins ; the 

 whole dorsoventral margin set with distant, long, simple hairs ; the gland 

 of segment 11 large and conspicous, surrounded by an oval, deep- black 

 patch which has a thin, green line just inside the circumference the whole 

 way round and the axis of which is transverse ; the organs of segment 

 12 circular-mouthed, protruding on occasions little white cylinders. 

 Spiracles are plainly visible, rather longly oval in shape and yellow in 

 colour. The colour of the larva is light green with a dorsal, dark-green 

 line flanked on either side by a subdorsal, white line ; a laterodorsal 

 white line ; a lateral white line ; all six lines commencing on segment 3 

 and ending just in front of the gland on segment 11 ; the space on the 

 dorsum between the lateral and subdorsal, white lines is obscurely rose- 

 coloured. Before the change to pupa the colour changes to a brown-pink. 

 All the segments are distinct. L : 19 mm. ; B •. 5'5 mm. 



Pupa. — The pupa is more or less normal in shape. The head is bowed 

 towards the ventrum and is hidden from above by segment 2 ; segment 2 

 is large, very convex transversely, the front margin semi-circularly curved, 

 the dorsal ascent towards thorax in the same plane as the ascent of the front 

 slope of thorax ; thorax ascending in a gentle curve to apex, the apex 

 rounded, then descending evenly to segment 5, the descent including 

 segment 4 ; the dorsal constriction at segment 5, slight laterally nil ; 

 dorsal outline from segment 5 to 8 straight to descend gradually 

 thence to segment 10 after which it falls nearly perpendicularly to the 

 longitudinal axis of pupa, the change in direction of course gradual and 

 rounded ; laterally the pupa increases in breadth from the head to the 

 slightly angular shoulders, then more still though only slightly to segment 

 7 and 8 after which it gradually decreases to end ; the extremity rounded 

 and not broadened out hoof-wise though closely applied to the surface 

 of suspension. Surface covered with very minute, tubercular granules 

 which sometimes coalesce into lines ; the shoulders eaeh with a small 



