DOLICIIOPUS. 175 



femora with 3 or 4 spines in front, tiie hind pair with 4 or 5. In the 

 male, the spines of the fore tibia are slighter, the first joint of the fo7'e 

 tarsus gradually dilated to the tip, the following joints somewhat di- 

 lated, the last joint silvered in front. 



Among sedges on the shores of estuaries and lakes. (E. S. I.) 

 Obs. 1). alpinus, Mg., which Stannius conjectures to belong to 

 this group, the wings being marked in the same way, remains 

 problematical, perhaps not of this genus. 



In those which follow (species 43-46) the face is shorter, 

 scarcely extending as low as the eyes, mostly yellowish-white with 

 silvery gloss in the male, dull whitish in the female ; the thorax 

 in front has a shifting hoary gloss with darker stripes ; the inci- 

 sures of the abdomen are not blackened ; the subapical vein con- 

 verges less strongly towards the cubital (sometinies they are almost 

 parallel) ; the fringe of the alulpc is usually black ; the posterior 

 femora have a single spine in front ; the first joint of the hind 

 tarsus is barely shorter than the second, sometimes even becoming 

 the longest [B. Saldbergi, Ztt.). 



43. nobilitatus, L. s. n. i. 995. 98 (1767); Fb. ; Esi. ; Shr. ; 

 Fin. ; Mg. ; M(j. ; Stn. ; Stg. ; Ztt. — ]\Ias. ciliatus, 'Mh. — cnpreus, 

 Gf. — -joco, Hrs. ! — Shf. ic. pi. 206. tig. 5 ! — Fo-m. sericetis, Gf. — ludi- 

 criis, Hrs. ! — plimiicornis, Mg. ; INIq. Aiireo-viridis, antennis niffris, 

 arista villosula, pedibus Jlavis, tibiis posticis apice tarsisque nigrls, meta- 

 tarsis anteriorihus Jlavidis ; Mas. lamelUs trigonis acuminatls fuscis, 

 alis ante apicem album nigris ; Fos7n,. alis versus apicem ivfuscatis. 

 Long. 2^ ; alar. 5 lin. 



Gilded-green, sometimes coppery-red. Antennce black, arista with 

 the last joint long, verg pubescent. Wings narrowed towards the base, 

 the anal edge being sloped away without any approach to an angle ; 

 hyaline; broivnish in the onter half, in female ; blackish in male, more 

 deeply so at the fore edge, the glabrous tip forming a defined white 

 spot ; the anterior veins are waved within the blaek patch. Lamellce 

 large, triangular, broicnish-black, paler towards the base, the apical 

 margin strongly pectinated and ciliated, the outer angle acutely elon- 

 gated. Legs and fore coxa3 yellow, the tip of the hind tibia and the tarsi 

 black, anterior metatarsi yellowish tipped with blaek ; the middle femora 

 have a spine near the tij) behind, as well as one (rarely two) in front. 



Among water-plants, about large ponds. (E. S. I.) 



44. gracilis, Stn. isis, xxviii. 255. 44 (1831). Prasinus, antennis 

 nigris, arista nuda, pedibus pallide flavis, tarsis apice nigris, ahilis 

 pallido-ciliatis ; Mas. lamelUs albidis. Long, 2; alar. 4 lin. 



Bright grass-green. Antennce black, arista nearly naked. Wings 

 nearly hyaline, with a slight black costal swelUng in male. Fringe of 

 alulce pule. Abdomen gilded. LamelUe obtuse, dingy white with a 



