DOLicncrus. 35 



S. D. ovatus LOEW. . Obscure viridis, pedum nigrorum tibiis an- 

 ticis ex flavo fuscis, facie alba, ciliis oculorum inferioribus albidis, tegu- 

 larum ciliis nigris, lamellis hypopygii parvis, rotundato-ovatis. 



Dark green ; feet black, fore tibiae brownish-yellow ; face white ; cilia of the 

 inferior orbit whitish, of the tegulae black ; lamellae of the hypopygium 

 small, rounded-ovate. Long. corp. 0.15. Long. al. 0.14 rO.15. 



SYN. Dolicho2ms ovatus LOEW, Neue Beitr. VIII, 13, 5. 



Face narrow, white. Antennas black, third joint short. Front 

 metallic green. Cilia of the inferior orbit whitish. Lamellae of 

 the hypopygium white, rather small, roundish-ovate, on the upper 

 and apical margin with a narrow black border, on the latter split 

 into a bristle-like lobe and fringed with black bristles. Feet 

 black ; the femora with a somewhat greenish reflection ; their ex- 

 treme tip brownish-yellow ; the root of the fore and middle tarsi 

 are of the same color. Fore tibia? upon the greatest part of the 

 upper side brownish -yellow, beneath dark brown. 'Middle tibiae 

 and middle tarsi brownish-black. Hind tibia? and hind tarsi 

 black. Cilia of the tegulae black. Wings hyaline; the costa at 

 the tip of the first longitudinal vein not thickened. The end of 

 the fourth longitudinal vein converges towards the third ; the hind 

 transverse vein straight and steep. 



Hab. Middle States. (Osten-Sacken.) 



Observation. The $ of D. ovatus, which is not known to me, 

 must resemble very much that of D. acuminatus. Besides the 

 but slight discrepancy in the color of the feet, the difference con- 

 sists probably in tb< coarser hairs on the fore coxas ; at least the 

 hairs in the g of D. ovatus are coarser and also longer than in 

 that of D. acuminatus. The difference in the direction of the 

 hind transverse vein, in the males of both species, is not sufficient 

 to be relied upon for an easy discrimination of the 9 of the same 

 species. 



II. . PREVAILING COLOR OF THE FEET YELLOWISH. 



A. Cilia of the inferior orbit black. 



9. D. pachycnemus LOEW. and $> Aeneo-viridis, antennis, 

 oculorum tegularumque ciliis nigris, coxis omnibus totis obscuris, pedi- 

 bus flavis, dimidio tibiarum posticarum apicali, tarsis intermediis inde 

 ab articuli primi apice, posticisque totis nigris. 



^ . Tarsis anticis attenuatis, articulis tribus ultimis atris, compressis, 



