216 Mr. A. G. Butler 07i new Lepidoptera 



bluish, with pale brown lateral tufts and a few orange scales 

 on the subterminal segment. Expanse of wings 50 millim. 



Alu Island. 



The absence of the well-marked ochreous apical patch on 

 the primaries readilj distinguishes this species from 0. ham- 

 hucina, 



ZygsenidaB. 



Hyal^thea, gen. nov. 



Nearest to Trianeura : primaries elongate-triangular ; costal 

 vein straiglit, reaching to apical fifth of costa ; subcostal 

 quadriramose, its first branch emitted at a considerable dis- 

 tance beyond the cell, the second and third branches forming 

 a short fork to apex, the fourth branch (representing the upper 

 radial) below the vein at about one third the distance from the 

 cell to the outer margin ; radial vein emitted from the upper 

 third of the discocellular veinlet, which is angled outwards ; 

 second and third median branches emitted near together and 

 at some distance from the first : secondaries very small, about 

 one third the length of primaries ; costal margin subangulated ; 

 outer margin very convex to the submedian vein, where it 

 turns abruptly outwards to the internal vein, then inwards, 

 returning in a semicircular curve to the base, the whole abdo- 

 minal area forming a coarsely-scaled flap ; costal vein absent ; 

 subcostal vein with a very short apical fork ; discocellular 

 veinlet inangled ; radial absent ; median branches well sepa- 

 rated, more or less sinuous. Body similar to that of Synto- 

 mis', antennae short, slightly spinous towards the tips. 



4. Hyalcethea Woodfordti, sp. n. 



Primaries purplish brown, almost black ; the discoidal cell, 

 a curved elongated stripe below it almost filling the interno- 

 median interspace, an elongated elliptical streak or spot 

 almost filling the last subcostal interspace, and two elongated 

 spots almost filling the median interspaces, hyaline white : 

 secondaries bright ochreous, with two small hyaline white 

 spots on the median interspaces ; costal border and fringe 

 towards apex purplish brown. Vertex of head, antennge, 

 and thorax purplish brown ; face, collar, tegulse, and abdo- 

 men bright ochreous, the latter with four bands and the anal 

 segment purplish brown ; legs varied with brown. Expanse 

 of wings 29 millim. 



Alu. 



5. Euchromia gemmata, sp. n. 



Allied to E. rubricollis ; wings above black-brown : prima- 

 ries with the base and a small crescent at the end of the cell 



