294 s. w. wiLLisTO^r. 



tarsi luteoas yellow at the base, black distally. Wings cinereous hyaline, the 

 .stigma brown, the veins of the disk narrowly cloiuled with brown ; fourth pos- 

 terior cell open. 



Female. — Front narrow above, short black pilose across the middle, below which 

 there is a narrow white pollinose cross band ; no black hairs visible on the under 

 side of the head. Abdomen nearly bare, thickly grayish white pollinose, leaving 

 a large dark brown, semi-oval, basal cross band on the second segment and similar, 

 successively smaller ones, on the next two segments. 



Hab. — California. 



This species, with T. mehmophleba Loew, forms a connection with 

 the genus Tahuda. From Loew's species it will be distinguished by 

 the bare front in the male ; in the female by the abdominal markings, 

 and the absence of black abdominal pile. 



CYRTIDJ5. 



Acrocera litiij*ata n. sp. 



ilfaZe.— Yellow; three broad, dorsal, thoracic stripes, pectus and tip of tarsi 

 black ; abdomen with irregular brown fasciae. Length 3 mm. 



Vertical triangle and occiput black, the latter pollinose. Doi-sum of thorax 

 honey-yellow, the humeri and post-alar callosities yellowish white, in the middle 

 with a broad black stripe, attenuated behind, and on each side a large elongate 

 spot or stripe. Pleurse dark ; pectus black. Scutellum black above, the margin 

 broadly honey-yellow. Tegulse white. Abdomen yellow, translucent, the second 

 and third segments on the sides brown, connected by a basal fascia, narrower on 

 the third, dilated triangularly in the middle ; fourth .segment with a median, 

 basal, subtriangular or T-shaped spot. Venter brown in the middle. Legs ytllow- 

 ish white, the tip of all the tarsi and claws black. Wings hyaline, veins yellowish. 



Hab. — Washington. 



Latvia Kletii O. Sacken, Wheeler's Reports, vol. v, Zool. 804. 



Two specimens of this beautiliil large Cyrtid from New Mexico 

 are easily recognizable. The species is almost entirely bare, the 

 sparse, short, black and light colored hairs on the dorsum of the 

 thorax are hardly discernible. In the South American species of 

 this genus, so far as I can learn, there is always a considerable vesti- 

 ture ; this fact, together with the termination of the second vein in 

 the first, renders its location in this genus a little doubtful. I can 

 see scarcely any golden reflections in my specimens, but, on the con- 

 trary, a pronounced blue or violet reflection, almost obscuring the 

 green of the abdomen of one. The stumps of vein on the anterior 

 branch of the third vein and near the tip of the fourth are wanting. 



Ociiiva heluo O. Sacken, Western Dipt. 276. 



I have a specimen of this species agreeing with the description, 

 except that the outer first posterior cell is but slightly coarctate, not 

 closed and petiolate. 



