58 Prof. Charles P. Alexander on 



Holotype, ^. 



Paratyi^e, a broken specimen. 



Type in the collection of the Vienna Museum. 



Erioptera chrysoptera (Walker). 



1856. Limnobia chry softer a Walker; Ins. Saundersiana, 

 vol. 1, Dipt., p. 438. 

 At the request of the author, Mr. Edwards has again 

 examined the type of this handsome species in the British 

 Museum collection. The type is now without antennae, 

 legs and ovipositor. The venation and pattern is carefully 

 delineated in a camera lucida drawing sent by Mr. Edwards. 

 This shows Sc\ ending slightly beyond mid-length of 

 2?2 + 3 ; cell 1st M2 irregularly hexagonal, the proximal 

 end a little wider than the distal end; basal deflection of 

 Ci(l beyond the fork of M, the distance about equal to m. 

 Mr. Edwards describes the wings as having the basal three- 

 fourths clear orange-yellow without any dark clouding. 

 The drawing indicates that the apical inf uscation is heavier 

 in the radial cells, becoming paler posteriorly. 



Eriocera chrysopteroides, sp. n. 



Generally similar to E. chrysoptera ; size larger ; general coloration, 

 including the legs, black; wings light yellow, the ajjical quarter 

 strongly infumed; an ill-defined paler bro\ra cloud in the caudal 

 cells of the wing. 



Female. — Length about 22-23 mm. ; wing, 16-18-8 mm, 



Eriocera chrysopteroides is apparently closely allied to E. 

 chrysoptera (Walker), differing in the following regards : 



From Walker's measurements of his species, the present insect ia 

 considerably larger. General coloration, including the head, thorax 

 and abdomen, black; the thorax dusted with brown. Legs dark 

 brownish black throughout. Wings light yellow, the apical quarter 

 strongly infumed, the proximal end of this band including all but 

 the extreme base of cell i?3, all of cells ^5, \st M2 and Cti\ ; an ill- 

 defined paler brown cloud in the caudal cells of the wing, centring 

 at vein Cti, including portions of cells R, M, Cu and 1st A. In the 

 paratype, this infuscation is only a little paler than the dark apex 

 and is connected with it ; the clear yellow colour includes only cells 

 C, Sc, the proximal three-quarters of 1st Rl and the base of Rl. 

 Valves of the ovipositor dark brown. 



The lateral angles of the pronotal scutum project laterad as 

 conspicuous slender tubercles. 



