DOLICHOPUS. 61 



both sexes ; the middle tibiae only in the 9 ; in the J 1 they are 

 remarkably slender, only somewhat stouter at the basis and near 

 the tip ; on the upper side with a blackish-brown longitudinal 

 line, which reaches from the incrassation at the base to that at the 

 tip ; they show besides, just before the apical incrassation, a small 

 whitish, not always distinct, crossband. Fore and hind tarsi plain 

 in both sexes ; the former from the tip of the first joint, the latter 

 altogether, black ; middle tarsi also altogether black, plain in the 

 9 ; their first joint in the g is somewhat incrassated and densely 

 ciliated on both sides with obliquely inserted black bristles. Cilia 

 of the tegulae black. Wings grayish-hyaline ; fourth longitudinal 

 vein not broken ; in the 9 they have the usual shape ; in the g 

 the hind margin has a sinuated excision before the anal angle. 

 The yellowish-white lamella? of the hypopygium are of moderate 

 size, elongated-ovate, narrowly bordered with black, fringed with 

 black bristles along the upper and apical edge ; the latter is some- 

 what jagged. 



Nab. Sitka. (Sahlberg.) 



Observation. I have been able to compare a considerable num- 

 ber of North American specimens of this species, and do not find 

 any diiference between them and the European ones. At first it 

 appeared to me that the arista of the former ones was perceptibly 

 stouter than that of the latter. A more close examination showed, 

 however, that this difference was merely illusory and produced by 

 some dust on the American specimens in my possession. The 

 appendages of the hypopygium of the North American specimens 

 are likewise precisely similar to those of the European ones. 



3O. D. ftllyipes LOEW. $ . Viridis, nitidus, facie aurea, antermis 

 . fulvis, articulo tertio prseter basim nigro, ciliis oculorum inferioribus 

 flavis, tegularum ciliis nigris, coxis anticis pedibusque fulvis ; tibiarura. 

 intermediarum apice albo ; tarsis intermediis simplicibus. 



Green, shining ; face golden-yellow ; antennae dark yellow, third joint, ex- 

 cept its basis, black ; cilia of the inferior orbit yellow ; cilia of the tegulse 

 black ; fore coxae and feet dark yellow, tip of the middle tibiae white ; 

 middle tarsi plain. Long. corp. 0.23. Long. al. 0.24. 



STN. Dolichopusfulvipes LOEW, Berl. Ent. Zeit. VI, 512, 61. 



Metallic-green, shining. Face golden-yellow, rather narrow. 

 Antennas saturate dark yellow ; third joint elliptical, not rounded 

 at tip, black, with yellow basis. Front metallic-green. Cilia of 



