DOLICHOPUS. 161 



In the rest (species 12-38), the cilia of the lower orbit are 

 silvery- white or straw-colour ; the fringe of the alulae usually 

 blackish ; the palpi yellow, except in the first three following. 



12. atripes, Mg. zw. iv. 102. 51 (1824); Stn. Atro-mrens, 

 antennis pedibusque nigris, alis fuscanis, hypostomate ochraceo, Mas.; aut 

 cano, Fcem. Long. 2 ; alar. 4 lin. 



Dark brassy-green. Face ochre in the male, dull whitish in the female. 

 Antenna and palpi black. Scutellum slightly pubescent on the disc. 

 Wings dusky hyaline, darker at the fore edge in the male. Lamella? 

 much curved, dingy yellowish-white, with dusky pubescence, the tip 

 blackish, very slightly ciliated. Legs black ; a ferruginous dot at the 

 knee, and at the base of the metatarsus of the anterior pairs ; which are 

 sometimes piceous, or the fore tibiae yet paler. Smaller than species 3. 



Not common. (E. S. I.) 



13. phseopus, (Hal., MSS.) Atro-virens, hypostomate candido, 

 antennis nigris, pedibus piceis, tibiis anticis pallescentibus, alls obscure 

 hyalinis. Long. If ; alar. 3^- lin. 



Dark brassy-green. Face silvery-white. Antenna and palpi black. 

 Wings dusky hyaline, with the costal swelling reduced to a mere dot, 

 as in the next. Lamellae rather oblong-ovate, dingy-white, with a 

 narrow black edge, the tip jagged and ciliated (as is usual). Legs 

 piceous ; the fore pair lighter, with the tibiae rather pale ; the hind 

 tibiae and tarsi blackish. 



Bare. In Mr. Haliday's collection. (I.) 



Obs. D. Irachycerus, Ztt. d. s. 526. 22, may perhaps be the 

 other sex of this species. See also D. nigripes, Mg. zw. vii. 164. 64. 



14. vitripennis, Mg. zw. iv. 78. 7 (1824) ; Stn. ; H 



Ztt. Atro-virens, hypostomate candido, antennis pedibusque nigris, tibiis 

 ferrugineis, alis hyalinis ; Mas. alis postice subsinuatis. Long. 1 J ; 

 alar. 3^ lin. 



Dark brassy -green, or bluish-green. Face white. Antennae and 

 palpi black. Wings broad, hyaline ; in the male the hind margin is 

 slightly sinuated, and the costal swelling a mere dot. Lamellae some- 

 what triangular, dingy-white, the black edge narrow and ciliated at 

 the tip. Legs black, the tibia, the tip of the knees, and the anterior 

 metatarsi ferruginous, the latter and the hind tibiae blackish at the tip. 



Not rare. (E. S. I.) 



15. urbanus, Mg. zw. iv. 92. 31 (1824); Stn.; Hal.; Stg. ; Ztt. 

 Viridi-aneus, hypostomate albo, antennis luteis apice nigris, pedibus flavis, 

 tibiis tarsisque posticis nigris, alis fuscanis ; Mas. tar sis intermediis ar- 

 ticulo ultimo candido, femoribus posticis bispinosis, alis postice emargina- 

 tis. Long. 2i ; alar. 4^ lin. 



Brassy -green. Face silvery -white, duller in the female. Antenna 

 tawny yellow, third joint black, with a small yellow spot at the base. 



VOL. I. Y 



