Diptera of St. Vincent (West Indies). 431 



LOBIOPTEEA. 



Wahlberg, CEfvers. af K.Yentenska Acad. Forh., 1847, 2o9. 



1. Lohioptera leucogastra. 



Milichia leucogastra, Loew, Wien. Entom. Monatschr., 

 v., 43, 20'.— Cuba. 



Lohiopjtera leucor/astra, Loew, Centur., viii._, 95. 



A single specimen from St. Yincent, agreeing well 

 with the description. 



SEPSID^. 



Sepsis. 



Fallen, Ortalidse, 20, 1820. 



1. Sepsis insular is y n. sp. (PL XIV., figs. 159, wing; 

 159a, front leg of '^ .) 



(^ , '5 . Front shining black, somewhat rcddisli below, -with a 

 median longitudinal depression on the lower part. Antennae 

 yellowish-red, the third joint sometimes a little brownish ; third 

 joint comparatively large. Face and cheeks yellowish-red. Thorax 

 shining black throughout. Abdomen deep shining black, with 

 coppery and purple reflections. L^gs yellow or lutescent yellow. 

 the distal joints of all the tarsi and the hind tibiae brown or black- 

 ish; front femora in the male dilated for the basal two-thirds, as 

 far as a bifid tubercle, in which is inserted a short bristle ; beyond 

 the tubercle the femur is immediately narrowed, and a little 

 distance before it there is a bristle near the middle of the femur ; 

 tibiae with a small tubercle corresponding to that of the femur. 

 Wings hyaline, the immediate base in the costal cells blackish. 

 Length 4 mm. 



Numerous specimens. St. Vincent. 

 BORBORIDyE. 



LiMOSINA. 



Macquart, Hist. Nat. Dipt., ii., 571, 1835. 



Table of Species. 



1. Third section of the costal vein longer than the second . . 2 

 Third section shorter than the second o 



2. Distal section of the second vein distinctly longer than the 



first section of the third vein .... j)erpar\:'x^ n. sp. 



