Diptera of St. Vincent {West Indies). 383 



6. Sapromyza {Lauxania ?), sp. 



(^. Shining black. Front with two bristles on each side below 

 the vertical ones ; ocelli with small procliuate bristles. Face rather 

 flat, wholly opaque light grey ; a transverse groove above the oral 

 margin. Antennae black, third joint oval, fully twice as long as 

 wide ; arista moderately long plumose on the upper side, pubescent 

 on the under side. Thorax and scutellum wholly shining, without 

 stripes. or spots. Abdomen shining brownish-black. Legs black 

 or brownish-black, the four posterior tibiae and tarsi more or less 

 yellow. Wings hyaline, the penultimate section of the fourth 

 vein about one-half the length of the ultimate section. Length 

 5 mm. 



One specimen. St. Vincent. This species is allied to 

 8. longipennis, but is distinct in the more shining colour 

 and in the distinctly narrower fronts which is perceptibly- 

 longer than wide. Possibly it is identical with Lauxo.nia 

 muscaria, Loew (Centur., i., SI -j Schiner, Eeise der 

 NoYara, Dipt., 282), but the face is not shining. As the 

 shining black colour is the final difference between iS^apro- 

 "myza and Lauxania, this species would properly come 

 under the latter. The difference from S. longipennis is, 

 however, very slight. 



7. Sapromyza sordidaj n. sp. 



? Sapromyza sordida, Wiedmann, Auss. Zw. Ins., ii., 

 456. — West Indies. 



(^ , % . Head and antennae yellow. Front as broad as long 

 shining ; ocellse bristles wanting or rudimentary. Third joint of 

 the antennae twice as long as wide ; arista black, long plumose on 

 -the upper side. Face rather flat, lightly silvery-pollinose. 

 Mesonotum shining reddish-yellow, the pleurae a little more 

 yellowish. Abdomen yellowish-brown, moderately shining. Legs 

 yellow. Wings lightly tinged with yellowish ; penultimate section 

 of the fourth vein more than half the length of the ultimate 

 section. Scutellum unicolorous, large, with four strong bristles. 

 Palpi wholly yellow. Length 5 mm. 



Twenty-four specimens. 



