THE COMMON B UTTERFL IBS OF THE PLAINS OF INDIA, 453 



part of tlie body : it is very tumid posteriorly where the large prominent gland 

 is situated and is longer than any other segment ; body broadest at 6, 7 ; anal 

 segments flattened, very much so at the end, that end longly rounded. The 

 surface is rather dull ; the dorsoventral margin set with longish, erect hairs 

 which are always most numerous at the anterior margins, practically wanting 

 at the posterior margins ; the front of segment 2 and anal segment are somewhat 

 densely set with hairs roimd the margins ; the spiracles, aU except those of 

 segment 12, are surrounded by red-erect hairs as well as the circular organ- 

 orifices on segment 12. Spiracles situated on the anterior face of a slight 

 tumidity on each segment. Colotir of body is grass-green as the groxmd-colour ; 

 the dorsal region red-brown or chocolate, flanked by a lateral, thin, double, 

 yellow line ; a subspiracular, thin, yellow line ; the posterior face of each spira- 

 cular tumidity is black except on segments 3, 4 ; segment 2 is bordered 

 anteriorly with red-brown and has the large dorsal depression also red-brown 

 with a dorsal, white line through it which is bordered by two dark brown bands ; 

 there is a darker, dorsal line from segment 5 to 11 bordered by a yellowish line, 

 and it is broadened out on segment 10; on segments 12-14 is one pear-shaped 

 red-brown mark, along the dorsal line, broadest behind; segments 12, 13 have a 

 thin-brown band along dorsoventral margin bordered below by the thin, yellow 

 line ; ventrum green. L : 36 mm. ; B : 8 mm. ; H : 6 rom. 



Pupa. (PL II., fig. 23a.) — ^Is exactly similar in slmpe, size and colour to that 

 of centaurus except that the thorax is generally greenish and the abdomen 

 red-brown. Surface sparsely covered with translucent-whitish, cylindrical, 

 short hairs w"hich are smaller than those of centaurus. The abdomen has a 

 depressed appearance about segments 6 and 7. 



Habits. — There is nothing to distinguish this species in habits from 

 A. centaurus in any way. The red ants look after its larva just as 

 assiduously : it frequents similar places, has the same habits of flight, 

 &c., &c., aad is rather more plentiful in Kanara ; the foodplants 

 of the larva are also identical. De Niceville mentions that this species 

 as well as atrax (under which name he includes hewitsoni, now recog- 

 nized as a distinct species and to which de Niceville refers) are butter- 

 flies of the Plains as well as the jungles ; amantes, he says " is more 



widely spread than centaurus. It occurs ."^.in the plains of 



Bengal, the Central Provinces and Bombay and thence southwards 

 to Travancore and Ceylon ; in the last place it is found at * Colombo'. 

 He quotes Hutchison as saying that it conceals itself under leaves 

 with its wings folded ; and says that he himself took it in Calcutta 

 under a big banyan tree in the Botanical Gardens. 



169i Arhopala hewitsoni — Male. Upperside: duU lilac colour. Fore wing: 

 costal band blackish, narrow ; outer marginal, blackish band rather broad, 

 even in width. Hind wing : nearly all blackish-brown tinged with lilac, with 

 lilac blue patch in the ceU-space ; filamentous tail of moderate length 

 brown tipped with white. Cilia white, with a brown base. Underside : 

 greyish-brown, markings a little darker than the ground-colour, with pale 

 whitish edges. Fore wing with three spots, all sometimes more or less elon 

 gated, increasing in size outwards, near the base of the cell; an outwardly 

 oblique spot below the last two cell spots, a spot somewhat elongated hindwards 

 in the next lower interspace and a small, roimd spot above the middle of the 

 two outer ceU-spots ; a slightly outwardly-curved, discal, even band of six 

 conjoined spots followed by a disconnected spot ; a marginal, pale brown line 



