64 DIURNAL LEPIDOPTERA. 



Genus DIPSAS. 



Dipsas, Doubleday. 

 Dipsas, part., Westwood. 



As I have before stated, the genus Dipsas was intended by Mr. Doubleday to contain 

 two species, D. Sila and D. Ataxus, too closely allied to T. Querc/ts and T. Betulcs to 

 be separated from them. With these Mr. Westwood associated those species (of very 

 different character) which now form the genus Deudorix. It was therefore necessary 

 to reject the genus Dipsas as it stands in the ' Genera of Diurnal Lepidoptera.' I 

 have now, however, found it advantageous to adopt it in its original form, and think 

 that it will be found to be a very good genus, and will relieve Thecla of species which 

 are not quite in accordance with it. Dipsas has a third branch from the subcostal 

 nervure wanting in Thecla. It will be seen by comparison how intimately connected 

 the Asiatic and European species are with each other. On the underside D. Sila and 

 D. Quercus scarcely differ, and although the Japanese species seem a little aberrant, 

 D. Lutea and D. Betula are also much alike below. The eyes are very small, hairy 

 in some species, smooth in others. The palpi are rather long, the first joint embracing 

 the head and covered with long hair, the terminal joint short, pointed outwards. The 

 antennae rather thick, many-jointed, the club long. 



1. Dipsas Sila. Plate XXVI. 2 fig- 3. 



Thecla Sila, Kollar in Eiigel's Kaschmir, pi. 4. figs. 7, 8, p. 414. 

 2 . Amblypodia Euphranor, Doubleday. 



Dipsas Sila, Westwood in Doubleday and Hewitsons Gen. Diurn. Lep. p. 480. Horsfield 4' Moore, 

 Cat. Lep. E. I. C. Mus. p. 30. 



In the Collection of W. C. Hewitson, from Northern India. 



This species varies considerably in size, in the breadth of the brown margin on the upperside, 

 and in the colour and position of the bands of the underside. 



