280 ERNEST A. BACK. 



hind femora yellow, the hairs and bristles whitish; second segment 

 of the antennae about half as long as the first, the third broad and only 

 slightly tapering at the apex; head and body densely grayish pruinose, 

 three broad stripes on the mesonotum and a subtriangular spot at 

 middle of base of abdominal segments 2-G polished; the median stripe 

 of the mesonotum is on its anterior third ; wings hyaline, axillary 

 vein and the others yellow, remainder of the latter brown." 



Type.—V. S. N. M., Cat. No. 7952. A single male. 



Habitat. — Padre Island, Tex. (C. H. T. Townsend, June 29). 



There are at the American Museum two male and one fe- 

 male specimens, collected by Prof. W. M. Wheeler at Galves- 

 ton, Texas, June 5, which agree very well with the above 

 description. They average about 10 mm. long. The bloom 

 of the head is silvery white, that of the thoracic dorsum more 

 grayish; as in sexfasiata, the scutellum is moderately clothed 

 with erect white pile. This species differs from the other 

 species, here included, in that the bloom of the abdomen 

 covers the entire basal segment, and the lateral margins and 

 a broad band on the posterior margin of the following seg- 

 ments, thus leaving only a subtriangular space at the base of 

 segments 2-6 bare of bloom and polished. The stripes on 

 the thoracic dorsum are not in these specimens as in the type 

 male. The coloration of the legs is the same as in sexfasiata. 



TRICLIS. 



Triclis Loew, Bemerkungen Ueber Asiliden, 17, 1851. 

 Triclis Schiner, Fauna Austr., I, 132, 1862. 

 Triclis Schiner, Novara, 162, 1868; obs. 



Loew, in establishing this genus in his Bemerkungen ueber 

 Asiliden, gives only the following, which I have fully translated : 



"A striking, most singular Dasypogon which has been sent 

 to me with the remark that it comes from upper Italy, induces 

 me to erect a singular genus, of which the most striking charac- 

 teristic is the closing of the first posterior cell some distance 

 from the margin of the wing — a characteristic which is often 

 present in the Asilinas, and still oftener in the Laphrinae, but 

 which, in the subfamily Dasypogoninae, has been called to my 

 attention for the first time in connection with this specimen. 

 I name this new subgenus, which comes next to Cyrtopogon, 



