32 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.. 65. 



From viridatus Lovell by the shining blue, more sparsely punc- 

 tured mesothorax; dusky wings; disk of propodeum plicate at the 

 base only; impunctate abdomen. 



HALICTUS (CHLORALICTUS) ABUNDUS. new species. 



Male. — About 7 mm, long; head and thorax dark blue; abdomen 

 black; pubescence short, dull white. Facial quadrangle distinctly 

 longer than broad; orbits converging sharply below; face with sparse 

 pubescence; front above the antennae closely punctured, below, more 

 sparsely punctured; supraclypeal area and clypeus microscopically 

 lineolate and coarsely punctured; antennae dark reddish brown, 

 second and third joints of equal length; flagellum ferruginous beneath. 

 Thorax with quite dense pubescence, mesothorax microscopically 

 lineolate, coarsely punctured; disk of scutellum with two large 

 polished spots; disk of propodeum nearly crescentic, shining, with 

 coarse irregularly anastomosing rugae reaching the apex, at the sides 

 the rugae extend on to the sides of the propodeum; posterior side of 

 propodeum coarsely rugose; truncation clearly defined; tegulae 

 ferrugino-testaceous, impunctate. Abdomen ovate, polished, very 

 sparsely pubescent; segments with apical margins polished. Wings 

 reddish, hyaline; stigma and nervures red-testaceous; anterior wing 

 5.5 mm. long; second submarginal cell higher than broad, receiving 

 the first recurrent nervure very near the apex; third submarginal 

 hardly broader than high, about one and one-half times as long as 

 the second on marginal. Legs black, sparsely pubescent; tarsi 

 reddish. 



Habitat, — Beulah, New Mexico, end of August (Cockerell and 

 Porter). Seven specimens. 



Type.— C^Li. No. 26432, U.S.N.M. 



Differs: From raidosensis Cockerell by the more sparsely punc- 

 tured mesothorax ; sculpturing of the disk of propodeum ; flagellum 

 paler beneath; wings lighter; tarsi reddened; abdomen obovate, not 

 punctured. 



From viridatus Lovell by the paler flagellum ; yellowish pubescence ; 

 mesothorax tessellate, more closely punctured; wings and tegulae 

 reddened. 



HALICTUS (CHLORALICTUS) TRANQUILLUS, new species. 



Male. — About 7 mm. long; head and thorax blue; abdomen black; 

 pubescence white, sparse. Facial quadrangle longer than broad, orbits 

 converging below; face above the antennae very closely punctured; 

 the punctures below and on the sides of the face more sparse; clypeus 

 and supraclypeal area microscopically tessellate, with sparse, deep 

 punctures; antennae dark, second and third joints of equal length; 



