388 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 83 



Abdomen: Posterior face as long as or distinctly longer than wide; 

 first tergite strongly transverse and as a nile more or less sculptured, 

 its anterior margin more or less elevated and more or less distinctly 

 emarginate; third segment (second of the gaster) considerably 

 exposed. 



Color: Head black, very often wholly or in large part metallic 

 black and sometimes in part greenish black; vertex, front laterad of 

 carina, clypeus, and hyperclypeal area sometimes bronzy; thorax 

 black to metallic black, the notuni sometimes in part bronzy black 

 and the areas along inner margins of par apsides sometimes greenish; 

 abdomen black or gray metallic black ; flagellum of antenna grayish 

 dull dark brown to grayish reddish brown, usually paler apically, the 

 pale color more extensive beneath and sometimes embracing the 

 whole lower surface; scape black, sometimes with a greenish reflec- 

 tion; legs brown; coxae generally blackish brown; anterior and 

 posterior femora outwardly sometimes blackish brown but usually 

 wdth a greenish, bluish, or violaceous tinge and sometimes markedly 

 green; anterior and intermediate tibiae usually testaceous or ap- 

 proaching testaceous, with a darker stripe above which may have a 

 distinct green or blue-green reflection; posterior tibiae sometimes 

 with a very distinct green reflection; tarsi testaceous or reddish 

 testaceous; wings hyaline, veins testaceous to brown. 



Male. — Length about 2.5-3.5 mm. Essentially similar to female; 

 scape stout, the part bearing sensorial punctures conspicuously 

 thickened or broadened and occupying distinctly more than one-half 

 to three-fourths of scape, the sensoiia rather fine to moderately 

 coarse and dense. 



r?/pe.— U.S.N. M. no. 18298. The type of hakeri is also in the 

 National Museum (no. 18301). 



Remarks. — Redescribed from 19 females and 22 males, including 

 the type series of the species and also of the synonym hakeri Crawford. 

 A study of the types and paratypes of subcarinaius and hakeri in con- 

 nection with additional material available for study indicates that 

 the two are identical. I have, therefore, suppressed hakeri as a 

 sj^nonym. 



Distribution.' — Alabama (Aug.); Louisiana (Sept.); Texas (May, 

 July, Oct.); Nebraska (July); Colorado, 3,700-5,100 feet (Aug.); 

 Idaho (June to Aug., inch); California (May). 



PEKILAMPUS CARINIFRONS Crawford 



Perilampus corinifrons Crawford, Proc. Ent. Soc. Washington, vol. 16, p. 71 

 1914. 



Femule.' — Length about 1.75-3.25 mm. Head: Frons with a carina 

 extending from behind the anterior ocellus downward on each side of 

 the scrobal cavity to or beyond the level of insertion of antennae, the 



