290 LIEUT.-COL. C. SWINHOE ON THE LKPIDOPTERA [Mat. 17. 



23. POLYPTYCHUS DENTATUS. 



Sphinx deiitata, Cram. Pap. Exot. ii. 42, pi. 125. f. G. 



Poona, December ; Belgaum ; Bombay, October and November. 



Larvae feed on Cordia angustifolia ; when full-grown measured 

 4\ inches, colour green, with ochieous stripes ; one moth emerged in 

 26 days, in July, and two of another brood in December took 63 days 

 in the pupal stage. 



24. ACHERONTIA MORTA. 



Acherontia morta, Hlibn. Verz. Schmett. p. 140, 1496. 

 Poona, June and August ; Bombay, August and September. 



25. Acherontia styx. 



Acherontia stijx, Westwood, Cab. Orient. Ent. 88, pi. 42. f. 3. 



Poona, September ; Bombay, September and October. 



The larvae of both the above fied on potato, jasmine, Erythriiia 

 indica. Datura, and C'olea ; the larvse, when disturbed, make the same 

 peculiar clicking noise the moth does ; they average in length from 

 4 to 5| inches ; larval stage 28 days, pupal stage varies from I to 4 

 months. They vary much in colour : those fed on potato were bright 

 canary-yellow, with seven violet stiipes, those fed on the other 

 plants named were of the usual green colour with purple stripes 

 bordered with yellow; but there was no visible difference in the 

 moths as to sex, colour, or size, whether they came from the yellow 

 caterpillars or from the green ones. 



ZYG^NIDiE. 



26. Euchromia polymena. 



Sphinx polymena, Linn. Syst. Nat. ii. p. 806, 40. 

 Bombay, September. 



27. SyNTOMIS EXTENSA, 



Syntomis extensa. Walker, xxxv. 1863. 

 Matheran, May. 



28. Syntomis cupreipennis. 



Syntomis cupreipennis, Butler, Journ. Linn. Sec. xii. p. 347. 

 Poona, July and October. 



29. Syntomis passalis. 



Zygrena passalis, Fabr. Sp. Lis. ii. 159, 11 = 

 Poona, May, October, and November. 



30. Syntomis Montana. 



Syntomis montana, Butier, Journ. Linn, Soe, xii. p, 349, 

 Poona, September and October. 



31. Eressa musa, n. sp. (Plate XX, fig. 1.) 

 Bombay, February. 



Allied to Eressa confinis, Walker. Smoky brown, a gold spot 



