( 386 ) 



last the reddisli d<-nticulated exterior line forms a .strongly marked c-rescent just 

 aliove the inner margin, which is filled up with white succeeded by a reddish blotch 

 of roundish shape, which is partially contin\ied upwards as a reddish shade beyond 

 the exterior line itself. In brunneipalpis, the crescent is much finer, and the red sjxjt 

 beyond hardly perceptible, and not protluced ; besides which it is decidedly nearer 

 the anal angle than in roseipennis. Hindwings entirely pale green; whereas in 

 roseipennis the pale space at the base is followed by a broad reddish shade ; under- 

 side of both wings whitish gieen ; the tip of the hindwings brownish ; this browu 

 spot is absent in roseipennis ; palpi dull rod brown. Tliora.x and abdomen whitish 

 green. 



Expanse of wings : 52 mm. 



One ? from l\io Demerara. 



Besides the difference in coloration, there appears to lie a slight but ai>preciable 

 difference in the shape of the wings. In roseipennis the costa of tlie forewiug is 

 straighter ; the hindmaigiu is straighter and more oblique, and the hindwings show 

 the elbow much more plainly. 



Pareuchloris gen. nov. 



Distinguished from Enckloris by the ? antennae being distinctly pectinated, 

 though sometimes (as in vei-naria) shortly so; in the hindwings the hiudmargin 

 is more or less distinctly angulated or elbowed in the middle, whereas in huddoris 

 it is quite round. 



Type : ParevAshlwis vernaria Linn. 



Opisthotia gen. uo\. 



Forewings witli the costa faintly curved; apex hardly pointed; hindmargiu 

 curved, faintly waved; anal angle distinct. Hindwings with the inner angle 

 rovmded, the anal angle produced into a short ear-shaped lobe ; hindmargin elbowed at 

 the end of the third median nervule, on each side of which it is concave; antennae 

 of (? pectinated, the pectinations moderate, even, pubescent ; tip filiform ; palpi 

 short, hardly reaching in front of face ; tongue present ; hind tibiae slightly flattened 

 and thickened, with two pairs of short spurs. Neuration normal ; scaling fine and 

 sparse ; the surface of the wings, especially on the imderside, iridescent. 



Type: OjAsthotia tumidiiinea Moore (Geonietru). 



Ornithospila gen. nov. 



Forewings ample, triangular; costa straight till ju.st Iiefore apex; liindmargin 

 curved, subcrenulate, more distinctly jnst lielow apex ; anal angle well marked. 

 Hindwings broad, with hindmargin waved, and a blunt but distinct elbow at the end 

 of the third median vein. Antennae (<S) pectinated, the pectinations short, even, and 

 pubescent ; tip filiform ; palpi porrect, reaching beyond face ; tongue present ; hind 

 tibiae with two pairs of spurs; scaling fine and dense; discocellular of hindwings 

 biarcuate, marked above with red brown; markings two transverse denticulate deep 

 green lines. 



Type : 0. aviculana Guen. (Geometra). 



The ? is not known of any species of this genus, as far as I can ascertain. 



