72 (Marcli, IS'.tO. 



which ave confluent the markings of the same thit within the region, that are un- 

 ruffled ; tlic fascia in its turn separated from the dark streaks at the terminations of 

 the nervures by a narrow space of the lighter colour extending to the wing margin 

 in their intervals. 



Without close examination it is difficult to distinguish this species 

 from the next. P. neglecta, however, is slightly greyer on the wings 

 than P. canescens ; the hair-streaks at the endings of its wing-nervures 

 are less strongly marked ; and in the greyish fascia beyond the 

 bristling hair, which is zigzag, the re-entering angle at the posterior 

 pobrachial is much deeper than that at the posterior radial nervure. 

 Under a weak lense, a small dark hair-spot is distinguishable by each 

 of the forks, and another, less distinct, by the end of the anterior 

 basal cell ; and these render it possible that the specimen labelled 

 canescens in Winthem's cabinet, and that labelled punctum, Megerle 

 MS., in the Vienna Museum (upon which Schiner based his assignment 

 of the name to sp. No. 9 of this Synopsis), might really have belonged 

 to the present species instead of to the next. Meigen's description 

 of the legs of Ps. canescens is unsuitable to both of these species. 



9. Pekicoma canescens (Meigen,t part. ?), Schiner. 



P. canescens, Schiner, Fn. Aust. Dipt., Bd. ii, 634 (1S64) ; v. d. 



Wulp, Dipt. Neerland., i, 31G, pi. ix, 14 [neuration ?] (1877) ; Etn., 



ante, 2nd ser., vol. iv, 122, and vol. v, pi. ii, P. 9 (details) ; Miall and 



Walker, Trans. Ent. Soc. London for 1&95, p. 142 (larva), p. 146 



(pupa), pis. iii and iv (life-history). 



First joint in the $ antennae subcylindi'ical, in length subequal to the 2nd, 

 which is subglobular and, perhaps, the stouter — both of them densely squamose and 

 provided with some spreading hairs; 3rd joint only very little longer, and not half 

 the width of the 2nd, fusiform-ovoid, with a few subappressed short scales and an 

 incomplete verticil of long, wide-spreading hairs not much inferior to the widest 

 verticils in amplitude ; the remaining joints very much as in /". veglecta. The 

 narrow greyish fascia skirting the outer limits of the bristling hair of the wing has 

 somewhat the form of a capital V. 



None of the British Psycliodidce to which Meigen's description 

 of the wings of Ps. canescens can be supposed to apply have legs 

 corresponding in colour with the remainder of his description — white, 

 with the last two tarsal joints black-brown. Unless, therefore, the 

 species be unknown to modern entomologists, it is probable that in I 

 drawing up his diagnosis Meigen referred to more than one specimen, 

 and that the specimens were not all of one species. The legs de- 

 scribed may have been those of a P.palustris or P. mutua. 



t Irichoptera canescettx, Meig.,* Kliissif. d. zweifl., Bd. i, 45 [ISOi].- Ps7/choda (puncium, 

 Megerle MS.) canescens, Meig., System. Beschr.* ted. i], i, 10(5 (1818J ; id., op. cil. .ed. ii , i, 84 



