206 [October, 



tliinly) with greyish hairs. Eyes deep black. Antennee whitish ; to beyond the 

 middle, more than the apical half of each joint is distinctly annulated with black or 

 blackish ; basal joint yellowish, clothed with grey hairs. Legs silvery-whitish. 

 Anterior wings narrow, and very acute if the fringes be removed : rather densely 

 clothed with greyisli-brown pubescence, and with about five longitudinal rows of 

 minute, but very distinct, rather distantly placed, silvery points (one row in each 

 area), one or two of which, on the apical margin, are rather larger than the others 

 (in examples in very good condition, there appear to be about three fuscous points 

 on the apical margin) : fringes long, concolorous with the pubescence : 4th apical 

 cellule with a long footstalk ; anastomosis irregular, the nervule closing the discoidal 

 cell placed much nearer the apex of the wing than those below it. Posterior wings 

 very acute, smoky-greyish, very iridescent ; with fuscous neuration and very long 

 greyish-fuscous fringes. 



In the (? , the superior appendages are long, hairy, somewhat dilated towards 

 the apex when viewed from above ; from between them proceeds the enormously long 

 penis, flattened and canaliculate above, broad laterally, curved in a nearly semi- 

 circular manner, so that the sub-acute apex nearly touches (or even slightly overlaps) 

 the margin of the last ventral segment ; no evident cover nor sheaths in dry ex- 

 amples. Ninth ventral segment narrow ventrally, somewhat dilated laterally ; on 

 each side of it is a short, obtuse, hairy process or appendage, dilated at its base ; 

 inferior appendages short, nearly straight, sub-acute, slightly dilated internally to- 

 wards the base when viewed ventrally. 



In the $ , the 9th dorsal segment is narrow, produced into a triangular hairy 

 process on either side : from it proceeds a very broad, horizontal, semi-transparent 

 plate, its outer edge forming a small angle at the point of termination of a median 

 dorsal keel; this edge slightly turned upward (in dry examples). Of the 

 lateral valves I see nothing in dry examples, and there is no prolongation of the 9th 

 ventral segment. Length of body, 3h mm. Expanse, 12 mm. 



England (Windermere, Sodghinson) . Ireland (Killarney, Eaton) . 



A beautiful little insect, o£ the same group as *S^. punctata (=]iiera, 

 Kol.) and >S^. viridis {= punctata, Ebr.) ; readily distinguished from 

 the latter by its universally darker colours and the very distinct rows 

 of silvery points on the anterior wings ; from the former, by its narrower 

 anterior wings, their darker ground, more distinct and rather distant 

 silvery points, darker fringes, &c. From both, the dark hind wings 

 readily separate it (these are silky-white in. punctata and viridis). The 

 anal parts are more allied to those of punctata in both sexes, though 

 considerably different. I have made drawings, but not so satisfactory 

 as I could wish, in consequence of the condition of the examples not 

 being good for examination of these parts." 



Lewisham, London : 



September, 1877. • 



