Diptera of St. Vincent (West Indies). 411 



9. Drosophila opaca, n. sp. 



$ , 2 • Front broad, more than one-third of the width of the 

 head, considerably broader above ; deep opaque black. Antennse 

 reddish-brown or blackish, the third joint more or less blackish on 

 the upper margin ; second joint tumid, with two or three bristles; 

 third joint about twice as long as wide ; arista with long rays» 

 about eight in number, on the upper side. Face black, lightly 

 dusted ; cheeks narrow. Palpi black. Mesonotum and scutellum 

 wholly deep opaque, velvety black. Pleurae opaque black, yellow 

 below, a slender yellow line along the dorso-pleural suture. Halteres 

 yellow. Abdomen opaque black and light-yellow; the first seg- 

 ment yellow ; the next three segments yellow, with the sides 

 black, extending more or less across the hind margin, and leaving 

 the yellow as a semi-oval space; fifth segment yellow, with a 

 posterior band ; sixth segment yellow. Legs, including the coxae, 

 wholly light-yellow. Wings with a distinct brownish tinge ; pen- 

 ultimate section of the foiirth vein about one- half the length of 

 the ultimate section ; the third vein terminates at the extreme tip 

 of the wing ; third section of the costal vein more than one-half 

 the length of the second section. Length 1| mm. 



Numerous specimens. St. Yincent. 



10. Drosophila thoracis, n. sp. 



$ . Front a third of the width of the head, broader above ; 

 opaque or brown or black, the narrow^ orbits and median triangle 

 shining. Antennae lutescent yellow, the third joint a little 

 blackish and rather elongate. Face luteous yellow, distinctly 

 carinate above, the oral margin narrowly blackish. Cheeks yellow 

 behind. Proboscis yellow. Mesonotum shining deep brown or 

 nearly black. Scutellum black, shining. Uppermost part of the 

 pleurge, near the dorso-pleural suture, black, below light-yellow ; 

 metanotum nearly black. Abdomen shining black, the middle of 

 the first and second segments, anterior border of the fourth and 

 fifth segments and the ovipositor, yellow; third segment yellow 

 with a narrow, interrupted black band. Venter and legs light 

 yellow. "Wings yellowish hyaline ; the third costal section two- 

 thirds of the length of the second section. Length 2 mm. 



Two specimens. St. Vincent. ^^ In fungi.^^ 



11. Drosophila pleuralis, n. sp. 



$ . Front yellow below, on the upper part blackish. 

 Antennae reddish or yellowish, the third joint more or less in- 

 f uscated and rather long ; arista with five rays above. Face, 



