1909.] Records of the Indian Museum. 447 



16. semilucida, Wlk., 1852^ Ins. Saunds., pt. 3, 170, 9 



[Anthrax). 

 IvOC. — East Indies. 



17. basifascia, Wlk., 1849, List Dip. Brit. Mus., ii, 248 



[Anthrax). 

 Loc. — Bengal. Type in British Museum. 

 N .B. — Walker does not mention the sex, 



18. albida, Wlk., 1852, Ins. Saunds., pt. 3, 171, 5 [Anthrax). 

 Loc. — East Indies. 



19. vitrea, Bigot, 1892, Ann. So. Ent. Fr., Ixi, 344, cf> . 

 Loc. — Pondicherry. Type in the Bigot collection. 



N.B. — In the Pusa collection is a cf of what I have little 

 doubt is this species. The wholly clear wings are characteristic 

 of almost this species alone, in this genus ; but in the present 

 specimen there is a large white tomentose spot towards each side 

 of the abdomen, spreading over the 2nd, 3rd, and 4th segments, 

 leaving the dorsum black. Bigot's "some vestiges of white 

 pile on the sides of the abdomen " is in accordance with this, 

 but I do not perceive the lateral reddishness on the ist and 2nd 

 segments mentioned by that author. 



Notes on the genus EXOPROSOPA. 



Firstly I have to own indebtedness to Mr. E. E. Austen for 

 informing me of the correct place in this genus, of Walker's 

 species alexon, alhida, auriplena, basi fascia, insulata, and semi- 

 lucida, all of which that author described under Anthrax. 



Having seen only twelve out of the nineteen species of Exo- 

 prosopa given here, it is unsafe to attempt a tabular view of them, 

 but they seem to be separable into five fairly distinct groups. 



1. Species with wholly black (or deep blackish brown) wings, 

 with at most an absolutely clear small spot at or near the tip. 

 These are the first three species, of which my latipennis has abso- 

 lutely unmarked blackish brown wings, whilst pennipes has a clear 

 v\dng-tip and long black hair on the hind tibiae, and lar is 

 distinguished by the wing being clear on the distal portion only 

 of the posterior border. 



2. Species with a closed 1st posterior cell. These are my 

 two new species flavipennis, with almost wholly yellow wings, 

 and flammea, a fiery reddish orange species with clear wings and 

 two dark cross-bands. 



3. An isolated species with clear wings and a broad scal- 

 loped dark band on the anterior half: E. collaris, Wied. 



4. Species with a pale grey, yellowish or clear wing, always 

 distinctly marked with a definite pattern, spots, bands, or the 

 oblique baso-costal band so prevalent in this sub-family. This 

 group may be considered to contain the typical species of the genus, 

 and to it belong also a good number of Palsearctic and North 

 American species. 



