40 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.65. 



Abdomen ovate, polished; segments punctured, sparsely pubescent. 

 Wings clear; anterior wing 4 mm. long; stigma and nervures pale 

 testaceous; second submarginal cell much higher than broad, receiv- 

 ing the first recurrent nervure near the apex; third submarginal 

 broad, more than twice as long as the second on marginal. Legs 

 black; knees somewhat reddened; tarsi bro^vnish, with yellowish hairs. 



Habitat. — Florissant, Colorado, July 16 at flowers DasipTiora fruti- 

 cosa (Cockerell). 



Type.— C&t. No. 26443, U.S.N.M. 



Differs from nevadensis Crawford by the pale tegulae; clear Avings; 

 shining, more sparsely pubescent abdomen; margins of abdominal 

 segments dark; sculpturing of the disk of propodeum. 



HALICTUS (CHORALICTUS; MEROSUS, new species. 



Male. — About 5 mm. long; head and thorax dark blue; abdomen 

 dark brown ; pubescence white. Facial quadrangle longer than broad ; 

 orbits converging sharply below; face quite densely pubescent; front 

 with close, but shallow punctures; the punctures are more sparse 

 below; second and third joints of equal length; flagellum dark 

 testaceous; yellow-testaceous beneath; mandibles reddish. Thorax 

 sparsely pubescent; mesothorax polished, with sparse, delicate punc- 

 tures; scutellum delicately punctured, with two large, polished spots 

 on the disk; disk of propodeum very dark blue,subcrescentic, shining, 

 with a few irregular plicae reaching the apical margin; pleurae very 

 rough; truncation distinct laterally; tegulae pale, impunctate. Ab- 

 domen ovate, shining; apical margins polished, testaceous; bases of 

 segments sparsely pubescent. Wings yellowish; anterior wing 3.25 

 mm. long; stigma and nervures testaceous; second submarginal cell 

 higher than broad, contracted about one-half above, receiving the. 

 first recurrent nervure near the apex; third submarginal higher than 

 broad, contracted above, more than twice as long as second on mar- 

 ginal. Legs dark brown, with dull white hairs; knees, tips of tibiae, 

 and tarsi yellow. 



Habitat. — Santa Fe, New Mexico, September 21, No. 5608 (Cock- 

 erell) . 



Type.— Cat. No. 26444, U.S.N.M. 



Differs from microlepoides Ellis by the paler flagellum; delicately 

 punctured mesothorax; sculpturing of the disk of propodeum; brown- 

 ish legs and abdomen; darker wings. 



HALICTUS (CHLORALICTUS) MALINUS, new species. 



Male.— About 5.5 mm. long; head and thorax blue-green; abdomen 

 dark brovvn; pubescence white. Facial quadrangle little longer than 

 broad; orbits converging sharply below; entire face densely pubescent; 

 front closely punctured; the punctures more scattered below; second 



