DOLICHOPUS. 165 



angle being much rounded away, with the black costal swelling stronger 

 than in the next two ; in female brownish-hyaline ; bend of subapical 

 vein very slight. Fringe of alula pale in male. Legs very pale yellow ; 

 middle coxse outside and the base of the hind pair grey ; tip of the 

 anterior tarsi dusky, and hind pair black. In the male, only the last 

 joint of the fore tarsus is dusky, the fore coxae denuded of black pu- 

 bescence, the tip of the hind tibia thickened and foveolated, sometimes 

 dusky. 



Not uncommon. (E. S. I.) 



23. acuticornis, Wd. mag. ii. 74. 23 (1818); Stn. ; 1ii.ru- 

 ralis, Mg. ; Mq. ; Stg. Pallide aneus, hypostomate candido, antennis 

 acuminatis nigris basi subtus luteis, pedibus pallide flavis, tibiis posticis 

 apice tarsisque nigris, metatarso antico jiavido ; Mas. antennis capite lon- 

 gioribus, alis lineola costali nigra, alulis pallido-ciliatis. Long. 1 \ ; 

 alar. 3 lin. 



Brassy, with a pale bloom. Front usually bluish-green. Face 

 silvery-white. Antenna pointed, black, with the under edge of the first 

 joint tawny yellow, spreading into a spot at the tip ; in the male about 

 as long as the head /* broad, the third joint lanceolate, curved upwards 

 at the tip, almost as long as the preceding two together. Wings 

 brownish-hyaline ; /// the male rather narrow, with a black costal 

 swelling ; bend of subapical vein very slight. Fringe of alula pale 

 in male. Forceps and internal appendages of hypopygium slender and 

 longer than usual. Legs very pale yellow ; posterior coxae grey out- 

 side ; hind libia black at the tip ; fore tarsi dusky with the metatarsus 

 pale yelloicish ; posterior tarsi black, base of middle metatarsus pale 

 brown. In the male the fore COXEB are denuded and glossed with 

 white, and the intermediate joints of the hind tarsus a little com- 

 pressed. 



Not common, on sandy coasts. In Mr. Halida/s collection. (I.) 



24. linearis, Mg. zw. iv. 84. 17 (1824); Hal. Foem. parvulus, 

 Ztt. Pallide aneus, hypostomate candido, antennis nigris basi luteis, 

 pedibus pallide Jlavis, tarsis apice posticis totis nigris ; Mas. alis lineola 

 costali nigra. Long. 1^ ; alar. 3 lin. 



Brassy, with a pale bloom. Face silvery- white. Antenna black ; 

 the first joint yellow, as long as the second and third together ; the 

 third somewhat triangular. Wings dark hyaline; rather narrow in 

 the male, with a black costal swelling-, bend of subapical vein very 

 slight. Fringe of alulae chiefly black. Legs very pale yellow, middle 

 coxae with grey spot outside ; hind tarsi, and the tips of the anterior 

 tarsi and hind tibiae, black. Fore coxse denuded in the male. Nearly 

 allied to the preceding two, but the antenna? not longer than in the 

 next ; from which it differs, besides its inferior size, by the coxae and 

 anterior tarsi more largely yellow, the slighter flexure of the subapical 

 vein, the clear white face, and by the several characters noticed as 

 peculiar to the male. 



