Diptera of Sf. Vincent {West IncUes). 2G7 



of t,he fourth : tip of third and of the posterior branch of the fourth 

 vein equidistant from the tip of the wing ; prefurca of fourth 

 vein longer than, its branches; furcation of fifth vein beyond the 

 origin of the anterior cross-vein, acute. Knob of halteres brown. 

 Length 2^ mm. 



Eight specimens. 



4. Sciara delectata, n. sp. 

 ^ . Antennse black, with grey and black pubescence, the scape 

 and first one or two joints of the flagellum yellow. Front and 

 face brownish-yellow, the occiput yellow. Thorax yellow, the 

 mesonotum with two elongated brown spots, and a median, less 

 conspicuous brown stripe. Abdomen yellow ; each segment with 

 a broad brown posterior band ; hypopygium large, light yellow, the 

 forceps brownish. Legs light yellow, the tarsi infiiscated. Wings 

 nearly hyaline ; neuvation nearly as in S. debiUs. Length 2 mm. 



Six specimens. Sea level, 1000. 



5. Sciara, sp. 



$ . Light yellow ; bristles and hair black, rather strong. 

 Each segment of abdomen with a broad, posterior, dark-brown 

 band. Tarsi infuscated. Wings nearly hyaline ; the first vein 

 terminates nearly opposite, or a little before the furcation of the 

 fourth vein ; the third takes its origin a little beyond the middle 

 of the first vein ; tip of third and the posterior branch of the 

 fourth vein nearly equidistant from the tip of the wing. Length 

 3 mm. 



One specimen ; antennae wanting. 



6. Sciara zygoneura, n. sp. (PL VIII , fig. 23, wing.) 



$. Occiput and vertex shining black ; front below the 

 eyes, and the face, opaque black. Scape and first three or four 

 joints of the flagellum yellowish ; distal three joints white, with 

 white pubescence ; remaining joints black, with black pubescence. 

 Thorax black ; mesonotum shining, with two rows of short black 

 bristles ; scntellum shining black, with bristles on its border. 

 Venter and first two segments of the abdomen yellow ; remainder 

 of abdomen black or deep brown with yellow incisures ; ovipositor 

 black, lamellse yellowish ; knob of the halteres brown. Legs 

 yellow, including the coxge ; terminal joints of the tarsi blackish ; 

 the tarsi and tibiae obscured by short black hairs. Wings lightly 

 brownish ; origin of third vein near the outer fourth of first vein ; 



