DOLICIIOPUS. 175 



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

 tnale, the spines of the fore tibia are slighter, the first joint of the fore 

 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. D. 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 (sometimes they are almost 

 parallel) ; the fringe of the alulae 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 (D. Saklbergi, Ztt.). 



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

 Fin.; Mg. ; Mq. ; Stn. ; Stg. ; Ztt. Mas. ciliatus, Mir. cupreus, 

 Gf.joco, Hrs. ! Shf. ic. pi. 206. fig. 5 ! Fcem. sericeus, Gf.ludi- 

 crus, Hrs. ! -plumicornis, Mg. ; Mq. Aureo-viridis, antennis nigris, 

 nrixta villosula, pedibus Jlavis, tibiis posticis apice tarsisque nigris, meta- 

 tarsis anterioribus jlavidis ; Mas. lamellis trigonis acuminatis fuscis, 

 alls ante apicem album nigris ; Fosm. alls versus apicem infuscatis. 

 Long. 2^; alar. 5 lin. 



(.lil Jed-green, sometimes coppery-red. Antenna black, arista with 

 the last joint long, very pubescent. Things narrowed towards the base, 

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

 hyaline ; brownish in the outer 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 black patch. Lamella 

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

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

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

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

 have a spine near the tip 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 flams, tarsis apice nigris, alulis 

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



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

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

 alula pale. Abdomen gilded. Lamella obtuse, dingy white with a 



