378 Professor Williston on the 



6. Trypeta {Plagiotoma) incompletaj n. sp. 



(^ , $ . Yellow, the mesonotum with two, the abdomen with 

 eight black spots. Front rather narrow, especially below ; on 

 each side with three or four brownish bristles, and with two pro- 

 clinate ocellar bristles. Antennae light-yellow ; arista bare, black 

 on the distal half. Face vertical, the oral margin projecting a 

 little. Proboscis short ; palpi projecting slightly in front of the 

 oral margin. Mesonotum light ochraceous yellow, with short 

 yellow hairs and brownish bristles ; just above and behind the root 

 of the wing on each side, there is a small round black spot ; 

 scutellum with four bristles. Abdomen a little more reddish, with 

 yellow hairs ; on each side with four rounded black spots. Ovipo- 

 sitor yellow, as long or a little longer than the last two abdominal 

 segments (in one specimen it is drawn out longer than the 

 abdomen). Legs yellow. Wings very similar to those of P. obliquay 

 Say, except that the first oblique band back of the tip of the wing 

 is represented only by the blackish spot at the tip of the fourth 

 vein and a slight yellowish tinge in front of it. Length 

 3^-4 mm. 



This species is closely allied to P. ohliqita, Say, but 

 differs in both sexes in the absence of the pleural spots 

 (there is a blackish spot at the root of the halteres, and 

 a small pair on the underside of the scutellum), and in 

 the wing-markings. 



SAPROMYZID^. 



LONCB^A. 



Fallen, Ortalidse, 1820. 



1. LoncJidea longicornisj n. sp. 



$ . Front narrow, with nearly parallel sides, about three times 

 as long as wide ; shining black. Antennae brownish-black ; third 

 joint elongate, reaching to beyond the oral margin ; arista bare. 

 Eyes bare. Thorax and abdomen wholly deep shining black. Tegulae 

 white ciliate. Legs brownish-black, all the metatarsi light-yellow. 

 Wings lightly tinged with brownish-yellowish. Length 4 mm. 



One specimen. St. Vincent. 



