1921] Johnson — New Diptera from Texas and Mexico 57 



separated from the facial depression, vertical triangle prominent, 

 projecting far above the eyes, occiput shining, antennae yellow, 

 longer than the face, the first joint longer than the first and 

 second together. Thorax black, with a wide band of bright yellow 

 scale-like tomentum between the shining humeri, a wide arcuate 

 band of the same yellow tomentum in front of the scutellum, be- 

 tween the two bands some scattering yellow scales, pleura and scu- 

 tellum shining, the latter very prominent, conical and slightly 

 pubescent. Abdomen shining, the first and second segments thinly 

 covered with yellowish hairs. Legs black, shining, bases of all 

 the femora and the tarsi (except the last three joints of the front 

 and the last two on the middle and hind tarsi), yellow. Halteres 

 yellow. Wings yellowish hyaline, the veins, stigma and outer third 

 of the wing slightly darker. Squamae margined with brown, the 

 lower one fringed with long yellow hairs and the upper one with 

 shorter brown hairs. Length 6 mm. 

 One specimen, Mexico. 



Spilomyia texana sp. nov. 

 Female. Front and face light yellow with a slight brownish 

 facial stripe and a spot on the inferior orbits; vertex and occiput 

 black, and densely pruinose ; antennas yellow. Thorax black, marked 

 with yellow. The humeri fused with large quadrate spots, occupy- 

 ing about two-thirds of the pronotum, leaving a wide black dorsal 

 and transverse band of equal width, the presutural and post-alar 

 callosities yellow, from the latter extend arcuate markings, the ends 

 of which are separated at the suture by the width of the dorsal line 

 of black, a large triangle in front of the scutellum, pleura with 

 spots above the front and middle coxeb, and a large median spot 

 in front of the wing, a large spot is also present on each side 

 of the metanotum, scutellum entirely yellow. Abdomen yellow, 

 the extreme bases of the first to fourth segments black, the median 

 interrupted bands on the second to fourth segments and occupying 

 slightly oblique depressions, are brown, not black. Ventral seg- 

 ments brownish black, margined with yellow. Legs, including the 

 coxge, yellow, except the outer half of the front tibias and all the 

 front tarsi, which are black. Halteres yellow. Anterior of the 

 wing, as far as the fourth vein, clouded with brown, fifth vein 

 widely margined with brown. Length 18 mm. 



