O AMERICAN DIPTERA. 



spot enclosing a hyaline space, brownish ; the first band is before, but not includ- 

 ing-, the small cross-vein ; the second is much wider before and includes the pos- 

 terior cross-vein ; the apical spot is separated from the second band by one-half 

 the width of the band ; the apical margin of the second band and the basal mar- 

 gin of the apical spot are both convexed, thereby giving the hyaline space an 

 hour-glass appearance; apical cell open ; anal cell short, separated by more than 

 the length of the posterior cross-vein from the margin of wing. Length 6.5 mm. 



Jamaica (Johnson and Fox). 



The coloring of this specimen, on account of bleaching, may be 

 somewhat paler than in life. 



Calobata iiebulosa Loew, Centur., vii, 89, 1866. iPl. II, fig. 10.) 



Front rufous; sides shining; middle vitta opaque and whitish pollinose in cer- 

 tain aspects; three frontal bristles, ocelli somewhat nearer the vertical bristles 

 than to the antennae ; vertex differentiated from the occiput, the lateral angles 

 polished. Face yellow, more or less golden; orbits narrowly silvered ; clypeus 

 brownish, shining; cheeks linear, silvery ; occiput rufous, shining, with bluish 

 reflections above; the lower posterior orbits broadly silvered. Antennae about 

 three-quarters the length of the face, rufous; second joint darker, with black 

 hairs and one or two long bristles beneath ; third joint more or less silvery in 

 certain aspects, about twice as long as the second ; arista long, black, shortly 

 plumose. Proboscis and palpi yellow. Thorax rufous, shining, especially the 

 pleurte; the latter with a broad silvery band before the root of the wings, cross- 

 ing the sternopleura to the bind coxae. Scutellum like colored. Halteres rufous, 

 knobs darker. Abdomen bluish-black, subshining, base more or less rufous. 

 Genitalia similar to antennxpes Say, but the clasps of male are nearly sessile, 

 covered with long hairs. Ovipositor dark rufous, about three-fourths as long as 

 the abdomen. Legfi yellowish, but apex of fore femora and entire tibiae black. 

 Fore tarsi, except the two apical joints, white. Middle and hind tibiae and tarsi 

 brown. Wings brownish hyaline, with a brown cloud centered about the middle 

 of apical cell and more or less expanded into the surrounding cells; the apical 

 cell open ; anal cell short, with an acute angle. Length 7 mm. 



Both sexes. Costa Rica and Hayti. 



Calobata icliiieuinonea Brauer, Sitzuugsber. d. k. Akad., xci, 388, 1885. 

 (PI. II, fig. 11.) 



Van der Wulp, in the " Biologia," Diptera, vol. ii, p. 374, gives 

 a translation of the original descri])tion and additional notes, which 

 fully describes this species. The clasps of the male genitalia are 

 rather more complicated than the others, and the figure given on 

 the plate will be sufficient for identification. 



Both sexes. Mexico. 



C'alobata calli<rhroina Higot, Ann. Soc. Ent. France, 373, 1886. 



Tills species is also noted by van der Wulp, and as these speci- 

 mens are rather mutilated, I cannot give any further notes, except 



