46 Journal New York Entomological Society. [Vol. vi. 



triangle polished, toward the sides striated, its lower end broad, rounded, reaching 

 lower end of the front, sides of the latter bare ; third joint of antennae subquadrate, 

 only slightly longer than broad. Thorax black, the sides and pleura yellow, the 

 latter marked with four black spots, mesonotutn coarsely punctured, scutellum yel- 

 low, convex. Abdomen black, the sides and venter yellow. Coxae, femora and 

 tibiae reddish yellow, the middle of the hind tibiae and all tarsi black. Halteres yel- 

 low. Wings grayish hyaline, third and fourth veins stroDgly diverging apically, hind 

 crossvein twice its length from the small. Length, 4 to 5 mm. 



Fourteen specimens, Beverly, Mass., June 4 and 20 (Edward Bur- 

 gess), and Colorado (Carl F. Baker and H. K. Morrison). Type No. 

 3798, U. S. Nat. Museum. 

 Chlorops aristalis, sp. nov. 



Head yellow, the front triangle, third joint of antennas, clypeus and occiput ex- 

 cept the sides and lower part black, arista white, the thickened basal part yellow ; 

 frontal triangle polished, the sides converging to below the middle of the front, 

 then as a narrow line extending to the lower edge of the front, sides of the latter 

 bearing short, black, bristly hairs ; third joint of antennae one and one-half times as 

 long as broad, concave above and convex below ; palpi unusually large, projecting 

 nearly one-third of their length beyond the anterior oral margin. Thorax yellow, the 

 mesonotum subshining, marked with five nearly contiguous black vittae, the pleura 

 marked with three blackish spots ; scutellum yellow, convex. Abdomen dark 

 brown, the sides and venter yellow. Coxae, femora and tibia? yellow, the tarsi 

 brownish. Halteres yellow. Wings hyaline, hind crossvein one and two thirds times 

 its length from the small. Length, 3 to 4 mm. 



Three specimens. North Carolina and southern Georgia. Collected 

 by H. K. Morrison. Type No.. 3799, U. S. Nat. Museum. 



Chlorops scabra, sp. nov. 



Head yellow, the frontal triangle, second antennal joint and narrow upper edge 

 of the third, the clypeus and occiput except the sides and lower part, black, arista 

 brown, the thickened base black ; frontal triangle polished, its sides converging to 

 below middle of front, then nearly parallel, extending to lower end of front, sides of 

 the latter bearing short black bristly hairs ; third joint of antennae orbicular, slightly 

 shorter than wide. Thorax black, the sides and pleura yellow, one or two spots on 

 the pleura, and the sternum largely black ; mesonotum subshining, coarsely punc- 

 tured ; scutellum yellow, convex. Abdomen dark brown, the sides and renter yel- 

 low. Legs reddish yellow, a broad black band near middle of each hind tibia, apices 

 of tarsi brown. Halteres yellow. Wings hyaline, hind crossvein over twice its 

 length from the small. Length, 3 to 4 mm. 



Two specimens. Oswego, N. Y. Collected July 17, 1896, by 

 Professor Sheldon. Type No. 3800, U. S. Nat. Museum. 



Chlorops rubida, sp. nov. 



Head yellow, an ocellar dot and narrow upper edge of the third antennal joint, 

 black ; frontal triangle polished, punctured, each puncture bearing a short hair, a me- 



