Diptera of St. Vincent {West Indies). 373 



a broad front, distinctly more than one-third of the width 

 of the head, brownish-red antennae, a rather narrow 

 clypeus, stouter and rather longer front tarsi, with only 

 the second, third, and fourth joints light-yellow, the 

 lighter coloured parts of the wing more pure hyaline, and 

 the first posterior cell closed. 



The genus Calohata has been repeatedly subdivided 

 by Macquart and Rondani, but their subdivisions have not 

 been accepted by later writers. For C. lasciva (G. 

 alhimana, Macq.) Macquart proposed the genus Tseniap- 

 tera, but afterward withdrew it. For the same species 

 Rondani proposed Grallopoda. For the species with open 

 first posterior cell, bare arista and long anal cell, he pro- 

 posed Mimegralla ; for those with closed first posterior 

 cell, bare arista and long anal cell, Grallomyia; while 

 Raineria, which was afterwards changed to Tanipoda, 

 was applied to species differing from Grallomyia in the 

 short anal cell. Calohata he restricted to those species 

 with plumose antennal arista. 



3. Calohata mellea, n. sp. (PI. XII., fig. 125, wing.) 

 (^ , $ . Reddish yellow ; abdomen black. Sides of the front 

 shining ; in the middle a dark-red opaque stripe. Antennae yellow, 

 third joint not twice as long as wide ; arista short-plumose. Face 

 yellow, silvery pollinose on the sides. Clypeus of moderate width, 

 red or black, shining. Thorax reddish-yellow, shining, the pleurae 

 a little lighter coloured. Abdomen black, shining, slender; male 

 organs and the ovipositor, except its base, yellow. Legs yellow ; 

 front tibiae except the extreme tip black ; middle and hind tibiae, 

 middle tarsi, and the hind tarsi, except the greater portion of the 

 metatarsi brownish ; front metatarsi light-yellow ; hind metatarsi 

 yellow. Wings hyaline, with a large brown spot filling out the 

 first posterior cell to beyond its middle, the outer half of the 

 discal cell, and triangularly in the submarginal cell to near the tip 

 of the second vein ; first posterior cell narrowly open ; anal cell 

 not produced. Length 6-8 mm. 



Nine specimens. St. Vincent. 



Nerius. 

 Fabricius, Syst. Antl., 1805. 



1. Nerius histriatus, n. sp. (PL XII., figs. 126, head of ? ; 



126a, wing.) 

 9 . Front narrowly opaque yellow on the sides, in the middle 

 with a broad opaque black stripe, broader in front, where it is red- 



