216 JOURNAL, BOMBAY NATURAL HISTORY SOCIETY, 1890. 



T. tages has the costa folded over on the upperside ; the differences 

 in neuration too are considerable, in the forewing of T. tages the 

 first median nervule arises near the base of the wing, in Aeromachus 

 near the lower end of the cell ; and the shape of the discoidal 

 cell of the hind wing is quite different, in T. tages being square- 

 ended, the disco-cellulars being perfectly upright, and of equal 

 length. 



The genus Aeromachus is, as far as I know, strictly confined to 

 India, where it occurs all along the Himalayas, in Assam, Burma, 

 and again in the hills of South India. They rest with wings closed 

 over the back. 



(1.) Aeromachus stigmata, Moore. 



Thanaos stigmata, Moore, Proa Zool. Soa Lond., 1878, p. 694; idem, id.,1. a, 1882, 

 p. 262 ; id., de Niceville, Journ. A. S. B., vol. li, pfc. 2, p. 60, n. 203 (1882) ; idem, 

 id.,1. c, vol. liv, pt.2,p. 122, pi. ii, fig. 2, male (1885) ; id., Doherty, Journ. A. S. B., 

 vol. lv, pt. 2, p. 139, n. 267 (1886) ; id., Elwes, Trans. Ent. Soc. Lond., 1888, p. 

 452, n. 484. 



Habitat : Masuri, N.-W. Himalayas {Moore) ; Bagheswar, Bal- 

 wakot, 2-4,000 feet, Kumaon {Doherty); Sikkim {de Niceville and 

 Elwes) ; Simla ; Kotgarh; Kulu Valley; Bhutan; Khasi Hills. 



(2.) Aeromachus indistincta, Moore. 



Thanaos indistincta, Moore, Proa Zool. Soa Lond., 1878, p. 694; idem, id., Journ. 

 Linn. Soa Lond., Zoology, vol. xxi, p. 53 (1886); id., Hampson, Jonrn. A. 8. B., vol. 

 lvii, pfc. 2, p. 366, n. 246 (1888). 



Habitat : Salween, Moulmain, Mergui — all in Burma {Moore) ; 



Nilgiri Hills, 3,000 feet {Hampson) ; Pulni Hills. 



(3.) Aeromachus obsoleta, Moore. 



Thanaos obsoleta, Moore, Proa Zool. Soc. Lond., 1878, p. 694; T. ? obsoleta, Wood- 

 Mason and de Niceville, Jonrn. A. S. B., vol. lv, pt. 2, p. 389, n. 235 (1886). 



Habitat : CherraPunji, Assam {Moore) ; ? Silcuri and Subong, both 

 in Cachar (Wood-Mason and de Niceville). 



(4. ) Aeromachus jhora, de Niceville. 



Thanaos jhwa, de Niceville, Jonrn. A. S. B., vol. liv, pt. 2, p. 4, n. 313; p. 122, 

 pi. ii, fig. 12, male (1885) ; id., Elwes, Trans. Ent. Soc Loud., 1888, p. 453, n. 486. 



Habitat : Sikkim {de Niceville and Elwes) ; ? Shillong, Khasi Hills 

 {Elwes), 



