340 Records of the Indian Museitm. [Vol. XIII, 



The distinction between Drepanosticta and Protosticta is not 

 of great importance^ and is liable in individual cases to break 

 down. 



The two genera may, however, be retained at least as a matter 

 of convenience. 



I have not found it possible to hit on a good character to 

 further sub-divide the genus Drepanosticta though it is likely that 

 the genus can be further broken up. I have been able to examine 

 some seven species of the genus, for the purpose of defining the 

 genus, and 1 find that the point of attachment of 'Ah,' and like- 

 wise the point of origin of M.. and Ms^ shows a certain amount of 

 individual variation. • 



On the whole the Ceylon species have the least reduced vena- 

 tion. I have selected D. carmichaeli as type of the new genus 

 because it is a well-characterized species, and with a fair number 

 of specimens at hand I have been able to deposit a paratype in the 

 British Museum and in mv own collection. 



Genus Platysticta, Selys. 

 Platysticta deccanensis> Ivaidlaw. 



Platysticta luaciilatn deccaneiisis, I^aidlaw, Rec. Ind. Miis. XI, p. 388, 

 text-fig, I (1915). 



Length of hind- wing 34 mm. , of abdomen 46 mm. Post-nodals 

 on fore-wing 22-23. Pterostigma one and a half times as long as 

 it is broad, covering more than one cell, brown with a fine white 

 margin. 



Head. — Upper surface black, basal half of upper lip, ante- and 

 post-clypeus bluish-white. 



Prothorax brown, its anterior lobe 5^ellowish- white. 



Thorax rich cinnamon-brown, paler below, the mid- dorsal 

 carina and alar sinuses black. 



Abdomen. — Segments 1-2 dark brown with lighter brown marks 

 on the sides, 3-7 very dark brown, black at the articular rings, 8-9 

 pale blue above, black below, 10 black. 



Anal appendages black. Upper pair more than twice as long 

 as segment 10, sharply bent down at the middle. Lower pair 

 nearly straight, hooked inwards at their extremity. 



Legs brown, articulation of the femurs yellow, cilia brown. 



The Museum collection also includes a female belonging to this 

 genus and probably to the present species from Cochin State 

 (Forest Tramway : mile 10-14, alt. 0-300 ft., 28-ix'i4, No. 8272/20, 

 taken by Mr. Gravely). The colouring of the head and prothorax 

 agrees with that of the males described above. The thorax is 

 black above, with bluish-white antehumeral bands ; brown at the 

 sides and paler below. The abdomen is brown with lilac coloured 

 lateral spots on segment 10. 



Length of hind-wing 28 mm., of abdomen 36 mm. 



