210' Records of the Indian Museum. [Vol. Ill, '09.] 



long as the second or the fourth. Palpi short, their segments 

 of nearly equal length. Legs rather stout and long; fore coxae 

 with the internal process shown in plate xxi, fig. 5, and all the 

 claws basally serrate (plate xxi, fig. 9). 



The wings are broad except at base, with membrane smoky 

 hyaline and parti-coloured brownish veins. The wide costal strip 

 is traversed by long close-set cross-veins separating between ver^^ 

 narrow cells; and when forked, the forks are short and close to the 

 costa. The cells of the disc are more or less hexagonal or quad- 

 rate but towards the region of the terminal forks they become 

 very much elongated. The first forks of the radial sector and of the 

 median vein are at about the same distance outwards from the 

 wing base, and the sector closel}^ parallels the main stem of the 

 radial vein. The colour pattern of the wings is verj^ complex, 

 the dull brown touches being minute. There is a series of 

 alternate lighter and darker brownish touches about the whole 

 wing margin; four or five of these are decurrent from the front 

 margin and traverse the yellowish stigma. There is a series of 

 minute brownish clouds covering the cross-veins between the 

 radius and its sector, there are three larger ones laid across the 

 branches of the cubital vein, and there are numerous faint clouds 

 upon the disc and on the anal angle. There is a round, more or 

 less tuberculoid spot in the middle of the disc, fainter in the hind 

 wing. The hind wing as a whole is paler, the disc being almost 

 hyaline. 



The genital apparatus of the male is most curious and puzzling 

 It is shown in lateral view in plate xxi, fig. 8. What I have been 

 tentatively calling a sperm conveyor depends from the hindmost 

 segment. This is boat-shaped in outline, with a pair of minute 

 palps on the bi-lobed posterior end. It appears to be capable of 

 being swung in and out on a more or less flexible and muscular 

 pedicel, and when swung inwards, its point must be close to the 

 sperm orifice. The abbreviation of the segment before it, and the 

 prolongation of the one before that, are shown in the figure; and 

 behind the ventral prolongation of the apex of the last mentioned 

 segment protrude a pair of lanceolate processes of uncertain function. 

 Observation of living specimens would be most valuable, as an aid 

 to understanding these parts. 



There is a fragment of a second species from the valley of the 

 Tenasserim river (Reg. No. -V—) with the male genitalia well pre- 

 served. It is obviously different (pi. xxi, figs. 11 and 12). 



