134 DIPTERA OF NORTH AMERICA. [PART III. 



closely approximated ; the posterior crossvein, with its anterior 

 end, is nearer to the apex than with its posterior end ; the poste- 

 rior angle of the anal cell is drawn out in a very long and pointed 

 lobe (the figure makes it too short and heavy). The extended 

 and entirely uninterrupted picture of the wings leaves near the 

 anterior margin an irregular row of hyaline spots and on the 

 posterior margin a broader hyaline border, with an irregularly 

 undulated outline ; the coloring of the picture is brownish-black ; 

 its inner part is paler brown, with numerous brownish-black dots 

 and spots. 



Hob. Georgia (Berlin Museum). 



Gen. II. STICTOCEPHALA nov. gen. 



Charact. General appearance: Trypeta-like. 



Front very broad, with punctures; cheeks comparatively broad; 



clypeus somewhat projecting over the edge of the mouth. 

 Wings of the usual shape; the ends of the auxiliary and of the first 

 longitudinal veins are far distant from each other ; posterior cross- 

 vein steep ; posterior angle of the anal cell acute ; the third and 

 fourth longitudinal veins, towards their end, at least with a trace 

 of a convergency. 



All the species belonging here are opaque in their coloring ; 

 thorax and abdomen are punctate in all of them; moreover, they 

 are generally marked with other pictures. 



The species which I know of may be separated in two groups, 

 on account of the different size of the hairs on the front. Sticto- 

 cephala cribrum and cribellum, would belong to the first group, 

 S. corticalis and van to the second. In the two latter species, 

 the two uppermost of the short hairs, inserted on the lateral 

 border of the front, assume the appearance of bristles, so that in 

 this respect these species are like the Trypetina, while this is not 

 the case with the two preceding species. 



1. S. cribellum n. sp. $ 9. (Tab. VIII, f. 26.) Cinerea, frontis 

 parte antica, antennis, facie, genis, proboscide, palpis pedibusque luteis; 

 alae hyalinse, fasciis quatuor, praeter secundam, postice abbreviatis, 

 macula apicali et vense transversalis posterioris limbo fuscis. 



Gray ; the anterior part of the front, antennae, face, cheeks, proboscis, 

 palpi, and feet clay-yellow. Wings hyaline, with four bands, which are 

 abbreviated posteriorly, except the second ; a spot at the apex and a 

 border along the posterior crossvein, brown. Long. corp. 0.13 0.15; 

 long. al. 0.140.15. 



