Di'ptera of St. Vincent {West Indies). 403 



SCATELLA, 



Rob. Desvoidy, Myod., 801, 1830. 



1. Scatella ohscuraj n. sp. 



$ , 2 ' Black. Face with brownish dust, opaque, the bristles in 

 front and on the margin moderately long. Bristle of antennae with 

 long pubescence. Front, thorax, and abdomen (in unrubbed speci- 

 mens) only a little shining, with brownish dust. Legs black. Wings 

 smoky, with five small, uniform, rounded, hyaline drops, the first 

 in the submarginal cell, two in the first posterior cell, and one on 

 each side of the posterior cross- vein. The costal vein attains the 

 tip of the fourth vein. Second, third, fourth, and fifth ( $ ) seg- 

 ments of the abdomen of nearly equal length. Length 2 mm. / Jk3%j (/^ 



Eight specimens. St. Vincent. ^>(5 ^ ^^ 



Ilythea. 

 Haliday, Annals Nat. Hist., iii., 408^ 1839. 



1. ? Ilythea flavipes, n. sp. r 



^ . Front short and broad, opaque brown, the black ground- 

 colour somewhat shining through the dust. Face opaque grey ; 

 very broad and arched below ; on the upper part gently carinate 

 in the middle, the carina ending in an angle whence the face 

 recedes markedly to the oral margin ; orbital ridges very narrow ; 

 across the narrowest part of the face brownish ; on the sides near 

 the most prominent part of the face with a row of rather weak 

 bristles ; a single small bristle near the lower border of the eyes ; 

 otherwise the face is entirely bare. Thorax deep black, shining, 

 with some metallic reflections ; when seen obliquely, with a fine 

 yellowish pubescence, which is more apparent on the pleurae ; 

 metanotum greyish dusted. Abdomen deep shining black, some- 

 what metallescent ; broadly oval in shape, the second, third, and 

 fourth segments of nearly equal length, the fifth longer. Legs yellow, 

 the tip of the tarsi brownish. Wings nearly hyaline, with narrow 

 brown spots forming incomplete bands ; the first begins at the end 

 of the first vein, and reaches to the fourth, and is curved ; the 

 next spot is in the middle of the submarginal cell ; another be- 

 tween this and the tip of the cell, two others in the first posterior 

 cell, and the posterior cross-vein is clouded ; second and third 

 section of the costal vein of nearly equal length. Antennae black, 

 the third joint on the under-half reddish-yellow ; arista with 

 eight rays. Length 2 mm. 



