10 S. W. WILLISTON, M. 1». 



middle and only narrowly separated from the small black spot on the anterior 

 angles which extends to, or nearly to, the hind margin. A circle of long bristly 

 hairs near the tip black; otherwise the short, not abundant pile, is yellowish, 

 whitish or white. Legs black, rather thickly clothed with short fine white pile, 

 along the under side of the hind femora and tibiae a little longer and more thickly 

 erect pilose, as in Dioctria ; bristles mostly white. Wings pure hyaline, the first 

 posterior cell closed a little before or at the tip, the fourth at a considerable dis- 

 tances before the border. 



One specimen, Kern Co., California. 



On account of the closed first posterior cell I place this species under 

 7V/V-//.S, with which it seems to agree otherwise very well. Psilocurus nu- 

 cfiiiscn/ns Lw\ is apparently related, but the first posterit)r cell is wide oped. 



HABROPOGOiV Loew. 

 Dactiliacus Rondani. 



A single specimen of a species from California seems either to belong 

 to this genus or is closely allied. I have no specimens for comparison. 

 Whether the structure of the face is the same I do not know. In my 

 specimen the mystax is confined to the oral margin as in Stichopogoti. 

 I give therefore briefly the structural characters of the present species. 

 I believe the genus has never been recorded from this continent. 



In structure, except the head, throughout like species of Stenopoffoii, 

 but less pilose. Head considerably broader than high, but scarcely as 

 wide as the thorax. Face very narrow, the eyes separated by an ex- 

 tremely narrow interval from the antennae ; their inner margins above 

 and below gently divergent, so that the distance between the angles below 

 is a little greater than that above. Face in profile gently concave from 

 antennae to oral margin, nearly perpendicular, wholly bare, except a thin 

 short row of soft bristles on the oral margin, which is projecting as in 

 species of Stichopoffon, Deromi/ia, and Saropogou ; front only gently 

 excavated, widened above. Antennae short, first two joints of equal 

 length, third a little longer than the first two together, broad, scarcely 

 more than twice as long as wide, obtusely pointed at the tip and with a 

 very small, almost microscopic style ; beard short and thin. Thorax bare, 

 except with very minute hairs, and moderately strong, not abundant 

 bristles on the back part ; scutellum with four bristles. Abdomen slender, 

 elongate, cylindrical, broader at the base, bare. Front and middle 

 femora with two posterior preapical, and the hind femora with an 

 anterior row of bristles. Fourth posterior cell nearly closed. 



The head and antennae may perhaps be like those of Psilocurus, but 

 the face is much narrowed above, and wholly bare, except the bristles 

 below; the abdomen is by no means "flach und gleich breit," and has 

 a star of spines at the tip in the female. 



