180 Journal New York Entomological Society. lvoi. x. 



timate section of fourth vein scarcely more than half as long as the last seclion. 

 Length, 3.5 mm. 



Habitat. — Lake Worth and Biscayne Bay, Florida. 



Two specimens collected by Mrs. Annie T. Slosson. Type No. 



6634, U. S. N. M. 



Family Trypetid.-e. 



Trypeta varipennis, sp. nov. 



Yellow, a pair of black spots on upper edge of raetanotum, a black spot in front 

 of each haltere, a transverse row of four round black spots on the first four abdominal 

 segments, a pair of spots at base and the narrow apex of the ovipositor, black ; head 

 and mesonotum subopaque, the posterior part of the latter, the scutellum, metanotum, 

 pleura and abdomen highly polished ; bristles black, hairs of abdomen also black; 

 third antennal joint tapering towards the apex, which is rounded ; one pair of dorso- 

 central and one of acrostichal bristles, scutellum bearing four bristles; ovipositor 

 as long as the penultimate abdominal segment ; wings hyaline, costal margin to tip of 

 fourth vein bright yellow, changing into brown at apex of wing and marked with 

 three rounded brown spots, one at humeral crossvein, another at apex of auxiliary 

 vein, the third just beyond apex of first vein ; anal cell yellow, a large brown cloud 

 at its apex ; a yellow crossband begins at the costal margin just beyond apex of first 

 vein, and passes over small crossvein and reaches the fifth vein below which it changes 

 to brown and extends nearly to the margin of the wing ; above the small crossvein 

 this band contains a small brown spot, and in the discal cell it is considerably ex- 

 panded toward the base of this cell ; hind crossvein bordered with brown and on the S 

 inner side with yellow, which color is prolonged almost across the first posterior cell. 

 Length, 3.5 mm. 



Habitat. — Bright Angel Hotel, brink of Grand Canyon, Coconino 

 Co., Arizona. 



A female s])ecimen collected July 10 by Mr. H. S. Barber. Type V 



No. 6635, U. S. N. M. I 



Euaresta stigmatica, sp. nov. 



Yellow, the occiput except the upper and lower edges, the thorax and base of 

 scutellum, black, opaque, densely gray pruinose, apex of abdomen of male black ; 

 hairs and bristles yellowish, arista except at base brown, proboscis robust, not genicu- 

 late, two pairs of dorsocentral bristles, no acrostichals, scutellum bearing four bristles, 

 the apical pair small, ovipositor of female slightly longer than the last two seg- 

 ments of abdomen ; wings practically as in bella Loew,* except that the stigma is 

 yellowish gray, with a small median brown spot. Length, 3.5-4 mm. 



Habitat. — Flagstaff (July 6) and Williams (June 27 and 30), 

 Arizona. 



One male and three females collected by Mr. H. S. Barber. Type 

 No. 6636, U. S. N. M. 



* Monographs Diptera North America, III, PI. X, Fig. 23. 



