412 GEOMETBIDJS. 



wing being reduced to patches below costa, beyond lower angle of 

 cell, and above inner margin, the submarginal dark markings to a 

 streak below costa and two at middle. 



Hob. E. Pegu (Doherty). Exp. 40 millim. Type in coll. Elvves. 



Genus HYDRELIA. 



Hydrelia, Hubn. Verz. p. 322 (? 1818). 

 Agnibesa, Moore, Lep. Atk. p. 256 (1888). 

 Autallacta, Wear. P. Z. S. 1893, p. 365. 



Type, H. sylvata, Schiff., from Europe. 



Eange. Nearctic and Palaearctic regions ; Northern Punjab ; 

 Himalayas ; Khasis ; Nagas. 



Palpi sh'ght and hardly reaching beyond the frons, which is 

 rounded ; antennae of male ciliated ; hind tibiae with two pairs of 

 spurs. Fore wing with vein 3 from near angle of cell ; 5 from 

 middle of discocellulars ; 6 from or from above upper angle ; 11 

 anastomosing with 7, 8, 9, 10 to form the areole. Hind wing with 

 vein 3 from near angle of cell ;. 5 from middle of discocellulars ; 

 6, 7 stalked ; 8 anastomosing with 7 to near end of cell. 



SECT. I. (Hydrelia). Both wings with the outer margin 

 evenly rounded. 



A. Hind wing of male not distorted nor clothed with long scales 

 on underside. 



3818. Hydrelia phasma, Butl. A. M. N. H. (5) iv, p. 441. 



Acidalia latsaria, Oberth. Et. Ent. xviii, p. 32, pi. iii, fig. 35. 



Purplish grey, irrorated with fuscous ; the frons dark chocolate. 

 Fore wing with indistinct waved subbasal line ; three waved ante- 

 medial lines, which almost meet on inner margin, the outermost 

 with some ferruginous on it ; a black cell-speck ; three waved 

 postmedial lines, the middle one with some ferruginous on it ; a 

 waved submarginal line. Hind wing with seven indistinct waved 

 lines, the basal area without lines ; both wings with marginal series 

 of black strigae. 



Hob. Japan ; Tibet ; Sikhim. Exp. 24 millim. 



3810. Hydrelia rufigrisea, Warr. P. Z. S. 1893, p. 364, pi. 32, fig. 6. 



rf . Pale brownish ochreous. Fore wing with traces of several 

 waved lines on the basal area, which is suffused with fuscous : an 

 oblique ochreous medial band, with a black cell-speck and black 

 streak on median nervure between veins 3 and 4 ; an oblique rufous 

 jxi-linodial line becoming medial on hind wing, the area beyond it 

 suffused with fuscous and with four waved lines ; a marginal series 

 of black specks. 



ll1>. Sikhim. Rrp. 30 millim. 



