502 bulletin: museum of comparative zoology. 



the next row by less than half the distance separating tliis row 

 from the upper row; halteres pale; sixth segment of male 

 faintly bristly {miidifrons Brues) D. concinna Meigen. 



Hypocera grenadensis Brues. 

 The type is from Grenada, collected by H. H. Smith. 



Conicera neotropica Brues. 



Originally described from a specimen taken in Grenada by H. H. 

 Smith. 



Beckerina neotropica, sp. nov. 



Type. — M. C. Z. 7,006. Paratijpe. — Grenada; Grand Etang, 

 2,500 ft. 



9 . Length 2.6 mm. Pale brownish yellow ; front black except near 

 lower margin; abdomen infuscated at base and with blackish apical 

 bands on the segments; legs pale yellowish, hind femora blackened at 

 tip; wings slightly tinged with yellow; halteres with pale stalk and 

 fuscous club ; antennae fuscous ; palpi pale yellow. Front with ocellar 

 tubercle and well-marked median groove; almost as high as wide, 

 but appearing shorter as the lower edge is more strongly produced 

 medially than usual. Two postantennal bristles which are slightly 

 curved upwards although nearly erect; next row complete, of four 

 bristles, forming a line curved down medially, with the median pair 

 farther from one another than from the lateral one, all close to the 

 lower margin; next row similarly curved, of four nearly equidistant 

 bristles; ocellar row of large bristles as are the others; in addition to 

 the large bristles there are scattered small ones especially noticeable 

 along the lower edge, with two somewhat larger just above the pair of 

 postanteanals. Postocular cilia large, cheeks each with three macro- 

 chaetae. Antennae small, round, arista nearly twice as long as the 

 front. Palpi small, strongly bristled on apical half, weakly so nearer the 

 base. Mesonotum with six rather small bristles in a nearly straight line 

 near posterior margin. Scutellum short, transverse, with four large, 

 equally strong bristles on the margin, the median pair approximated, 

 much less than twice as far from one another as from the adjacent 

 lateral one. Propleura bristly behind, with two large bristles next 



