ART. 19. AMERICAN BEES OF THE GENUS HALICTUS SANDHOUSE. 35 



plicate, the plicae reaching the broad, low posterior rim; at the 

 sides the plicae extend over the margin on to the lateral sides of 

 the propodeum; mesopleurae with coarse, shallow punctures; trun- 

 cation sharply defined laterally; tegulae pale testaceous, impunctate. 

 Abdomen ovate, with rather close, short hairs; apical margins of seg- 

 ments with faint, transverse lineolations, testaceous; segments 1-3 

 closely punctured: segments 4-5 with piliferous punctures only. 

 Wings clear; anterior wing 4.5 mm. long; stigma and nervures very 

 pale testaceous; subcostal nervure very dark; basal nervure very 

 strongly bent; second submarginal cell higher than broad; the first 

 recurrent nervure joining the second transverso-cubital ; third sub- 

 marginal broad, contracted above, about one and one-half times as 

 long as the second on the marginal. Legs black; knees and tips of 

 tibae and tarsi yellow. 



Habitat. — East F'alls Church, Virginia, July 20 (S. A. Rohwer), at 

 flowers Daucus caroia. 

 - Type.— Cs^t. No. 2643G, U.S.N.M. 



Differs: From liortensis Lovell by the larger size; paler wings; head 

 and thorax golden green; punctured abdomen; sculpturing of the disk 

 of propodeum. 



From disparilis Crawford by the narrower face; opaque, more 

 closely punctured mesothorax and scutellum; sculpturing of the disk 

 of propodeum; abdomen closely punctured, with greenish reflections. 



HALICTUS (CHLORALICTUS) APERTUS, new species. 



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

 black; pubescence white. Facial quadrangle longer than broad; 

 orbits converging sharply below; face clothed with quite dense pubes- 

 cence; front above the antennae very closely punctured, the punctures 

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

 the supraclypeal area and clypeus, which are dull and microscopically 

 tessellate; anterior margin of clypeus obscurely yellowish; third joint 

 of antennae longer than second; flagellum dark testaceous, paler 

 beneath. Thorax with close, short hairs; mesothorax and scutellum 

 opaque, microscopically tessellate, appearing almost finely granular, 

 very closely punctured, the punctures more sparse on the disk; disk 

 of propodeum crescentic, shining, with microscopic transverse lineo- 

 lations between the plicae, which reach the apex; the plicae extend on 

 to the sides of the propodeum; truncation distinct laterally; tegulae 

 very pale testaceous, impunctate. Abdomen obovate, densely pubes- 

 cent, with delicate piliferous punctures; apical margins of segments 

 microscopically lineolate; testaceous. Wings hyaline; about 3.5 mm. 

 long; stigma and nervures testaceous; second submarginal cell higher 

 than broad, receiving the first recurrent nervme a little distance from 



