Diptcra of St. Vincent {West Indies). 425 



nearly hyaline ; second section of the costa more than twice the 

 length of the third. Length If mm. 



Thirty specimens. St. Yincent. 



9, Oscinis fur, n. sp. 



,^, ?. Front light-yellow, opaque, with a Y-shaped impressed 

 line, back of which the vertical triangle is more or less black or 

 brown aud greyish-dusted. Face, cheeks and palpi yellow. An- 

 tennae black, the basal joints yellow. Thorax black, only a little 

 shining, covered with thin greyish dust or pubescence. Scutellum 

 oval. Abdomen black, moderately shining. Legs black or dark 

 brown, the trochanters, knees, more or less of the anterior tibiae 

 and the base of the middle tarsi yellow. Wings greyish-hyaline ; 

 third section of the costal vein about half the length of the 

 second section. Length 2 mm. 



Ten specimens. St. Vincent. This species is closely 

 allied to the foregoing, 0. incipiens, but differs in the 

 colour of the antenn93 and legs, especially. 



Chlorops. 

 Meigen, Illiger's Magazin, ii., 278, 1803. 



1. Chlorops trivittata, n. sp. 



(^ , $ . Front reddish-yellow, mostly shining, with a small 

 black spot between the ocelli. Basal joints of the antennae yel- 

 lowish-red ; third joint black. The face, the broad cheeks, palpi 

 and broad margins of the occiput yellow. Thorax light-yellow ; 

 the broad median black stripe begins at the neck and reaches two- 

 thirds of the way to the scutellum ; the lateral stripes begin a 

 little way back of the front margin and reach further toward the 

 scutellum ; in addition there is a black strigula above the root of 

 each wing, and a minute black spot on each humerus. Scutellum 

 light-yellow, semicircular in shape. Metanotum black. Abdomen 

 brownish-yellow ; venter yellow. Legs yellow ; the distal joints 

 of the tarsi brownish. Wings nearly hyaline ; the third section 

 of the costal vein only a little more than half the length of the 

 second section ; third and fourth longitudinal veins gently di- 

 vergent ; last section of the fifth vein more than twice the length 

 of the penultimate section of the fourth. Length 2 mm. 



Fifteen specimens. St. Vincent. 



