DESCRIPTION OP THE SPECIES. 67 



black, on its upper edge fringed with close black hairs ; the fifth 

 joint still more flattened, ovate, snow-white, upon its upper side 

 with very short and fine minute snow-white hairs. The costa at 

 the tip of the first longitudinal vein only with an insignificant 

 swelling 



Hab. Middle States. (Osten-Sacken.) 



Observation. Of this and of the preceding species I possess 

 so many specimens taken together that I can entertain no doubt 

 about having the ? of both before me. Unfortunately I found it 

 impossible as yet to discover any reliable character to distinguish 

 these females. 



&.' Antennae black, at the utmost the greater part of the first joint red. 



35. D. chrysostomus LOEW. . Viridis, facie aurea, antennis 

 nigris, ciliis oculorum inferioribus albidis, tegularum ciliis nigris, pedi- 

 bus flavis, tarsis maris simplicibus. 



Green ; face golden-yellow ; antennas black ; cilia of the inferior orbit 

 whitish ; cilia of the tegnlse black ; feet yellow ; tarsi of the $ plain. 

 Long. corp. 0.18. Long. al. 0.17. 



STN. Dolichopus chrysostomus LOEW, Neue Beitr. VIII, 23, 24. 



Green, shining. Face narrow, dark golden yellow. Antennae 

 altogether black ; third joint elongated-ovate with a pointed tip ; 

 arista rather slender with a somewhat imperceptible pubescence. 

 Front shining blue-green. Cilia of the inferior orbit whitish. 

 Upper side of the thorax but little dusted ; on each side, at the 

 transverse suture, with a coppery-brown spot. Abdomen with 

 rather apparent dark incisures, which, in fully colored specimens, 

 are margined with coppery-red. The lamellae of the hypopygium 

 are large, rounded, yellowish-white, with a not very narrow black 

 border on the upper and the apical edges ; the latter is jagged 

 and fringed with black bristles. Fore coxae yellow, somewhat 

 blackened only at the base, clothed anteriorly with short black 

 hairs, middle and hind coxae blackish, their extreme tip only yel- 

 low. Feet yellow. The hind femora with a bristle before the tip 

 and with short yellowish hairs on the underside, although not 

 ciliated with them in the true sense of the word. Hind tibiae not 

 stout ; their posterior side without glabrous stripe. Fore tarsi 

 plain, but little longer than the tibiae, gradually infuscated towards 

 the tip. Middle and hind tarsi infuscated from the tip of the first 

 joint ; however the second and third joints of the middle and the 



