DESCRIPTION OF THE SPECIES. 297 



the arista is but little incrassated at the basis, its pubescence is 

 but very little perceptible. The upper side of the thorax bears- 

 some short, yellowish-white pile and black bristles, two pairs of 

 which seem to have been inserted upon its middle. Scutellum, 

 at the basis, of the same color with the thorax, towards the tip 

 more or less yellowish ; it bears four black bristles. The com- 

 paratively somewhat narrow abdomen is likewise of the same 

 color with the thorax, its last segment a little elongated; its short 

 pubescence is yellowish-white; the long bristles at the end of the 

 last segment are usually black. The flat ovipositor of the female 

 is somewhat longer than the last two abdominal segments taken 

 together, red, blackened at the root and at the extreme tip only ; 

 its short and fine pile is of a very pale color. The wings are 

 comparatively long and narrow, coarsely reticulate with brownish- 

 black upon their whole surface ; the root of the wing, up to a 

 little beyond the end of the small basal cells, shows but some 

 scattered spots ; upon the rest of the surface the single drops are 

 large and hence rather close together, although but little coales- 

 cent ; no drops at all, or almost none, are to be found on a 

 crossband running obliquely from the stigma over both crossveins 

 to the posterior margin of the wing, on a spot beginning at the 

 anterior margin near the apex of the wing, and on a smaller spot 

 upon the apex itself; the basis of the black stigma forms a large, 

 limpid drop, somewhat tinged with yellowish ; the usual triangular 

 cluster of drops between the stigma and the unperforated cross- 

 band before the apex consists of six drops, three quadrangular 

 ones between the costa and the second longitudinal vein, a larger 

 quadrangular spot and a smaller rounded one between the second 

 and third longitudinal veins, finally a large round one beyond the 

 third vein. The latter vein has no bristles; the small crossvein 

 corresponds to the last third of the discal cell. 



Hob. California (A. A gassiz) ; Texas (Belfrage). 



Observation. -This species is a normal Tephritis. 



45. T. clatlirata Lw. 9 . (Tab. X, f. 15.) Cana, capite pedilrasque 

 flavis, feinoribus litur& nigricante signatis, abdomine bifariam nigro- 

 maculato ; alae colore nigro rare maculato-retioulatse, stigraate atro 

 guttain hyalinara includente, venfl longitudinal! tertia nudS, ; peristo- 

 xninm modice productum et proboscis breviter geniculata ; terebra ater- 

 rima, duobus ultimis abdominis segmeutis simul sumtis aequalis. 



