Vol. XXV] ENTOMOLOGICAL NEWS 459 



Differs from all the other species in having 1 the front and 

 thorax smooth, without any wrinkles or punctures or pnncti- 

 form dots. 



Calobata nasoni n. sp. 



Shining black with front, face, cheeks, mouth-parts, antennae, 

 htimeri, halteres, venter of abdomen, claspers and legs, whitish yellow 

 to tawny. Head slightly longer than high, eyes round ; occiput swollen, 

 one-half diameter of eye. Front one-third of width of head, opake, 

 yellow becoming tawny medianly toward ocelli ; orbits silvery white 

 continuing as stripes to a spot behind ocelli ; ocellar tubercle on iine 

 with posterior orbits ; orbital bristles not discernible. Face, lower 

 occiput and palpi opake white. Antennae with third joint slightly longer 

 than broad ; arista black, short plumose basally. 



Thorax narrower than head and twice as long; mesonotum polished, 

 with a broad median stripe divided anteriorly and passing over humeri, 

 notopleural stripe and pleurae, white pruinose, as is also the scutellum 

 and metanotum. 



Abdomen of male one and one-half times as long as thorax, broadest 

 at segments 3 and 4 ; genital segments subglobose ; claspers separated, 

 broad at base, abruptly attenuate and bent forward into a long fili- 

 form apex, sparsely hairy. Between hind coxae of male posteriorly is 

 an elongate pointed process. Genital segment of female one-half length 

 of abdomen, subcylindrical, with cavity at base beneath, flattened lat- 

 erally toward apex. 



Legs very slender; posterior femora three-quarters of length of 

 wing, with brown subapical rings, their tibiae nearly as long ; other 

 tibiae equalling their femora. 



Wings hyaline, yellowish, longer than abdomen ; vein 2 entering costa 

 in a straight line midway between post. c. v. and apex ; veins 3 and 4 

 separated apically half length of post. c. v. Length 4-6 mm. 



Holotypc. *$, Algonquin, Illinois, June n, 1909 (W. A. 

 Nason, No. i/i.) Type No. 6078. 



Paratypes. 3 $,29, with same data. 



This species averages smaller than pallipcs Say, which it 

 closely resembles. It cannot be Say's species, as the vertex- 

 is tawny and the mesonotum has a broad median whitish prui- 

 nose line, while the lateral margin is only narrowly so. The 

 differences in the genitalia will readily separate the two species. 



Taeniaptera divaricata n. sp. 



Black with metallic blue and black reflections. In form and she 

 similar to antehnaepes Say but more robust, especially as to head and 



