Genera and Specks of DiepaiiiJaj. 107 



Drepana crctacea, sp. n. 



$ . Head, thorax, and abdomen white, the head tinged 

 witli rufous. Fore wing chalky white, thinly scaled ; a 

 slight broNvuish spot at lower angle of cell ; a very faint 

 oblique fulvous postmedial line from vein 5 to inner margin, 

 and points before tcrmen on veins 7 to 5. Hind wing chalky 

 white with faint traces of a curved postmedial line. 



Hah. \V. China, Huaug-.Mu-Chang {Pratt), 1 ? type. 

 Exp. 52 mm. 



Genus Hyalostola, nov. 

 Type, H, phoenicochyta. 



Proboscis fully developed ; palpi porrect, short; antennae 

 of male bi pectinate with moderate branches. Fore wing 

 with the apex rounded, the terraen evenly curved ; vein 3 

 from well before angle of cell ; 5 from well above angle ; 

 f) from upper angle; 7, 8, 9 stalked; 10, 11 stalked, 11 

 anastomosing with 12. Hind wing with the termeu evenly 

 curved, the inner margin long; vein 3 from well before 

 angle of cell ; 5 from well above angle ; the upper part of 

 cell shorter ; 6 from angle ; 7 from middle of cell, anasto- 

 mosing with 8 ; frenulum absent. 



Hyalostola phoenicochyta, sp. n. 



(J . Head, thorax, and abdomen white. Fore wdng semi- 

 hyaline white irrorated with rufous scales and tinged with 

 j)urplish crimson to beyond middle ; traces of a rufous post- 

 medial line, oblique to vein 4, then incurved; some rufous 

 marks before termen. Hind wing semihyaline white tinged 

 with purplish crimson, and irrorated with some rufous scales; 

 some diflFused rufous marks on termen. 



Hah. Borneo, Sarawak {Wallace), 1 J type. Exp. 

 2G mm. 



Deroca coreana, sp. n. 



? . Head, thorax, and abdomen white ; antennae with the 

 shaft ringed with black, the branches black ; tarsi fuscous 

 ringed with white. Fore wing semihyaline white ; the costa 

 blackish towards base; short antemedial i)lackish streaks on 

 the costa and veins; an oblique blackish striga on upper 

 discocellular and blackish mark above it on costa ; a curved 

 dittused pale fuscous postmedial line with minute black 

 streaks at the veins, a series of small fuscous spots beyond it 



