AET. 19. AMERICAN BEES OF THE GENUS HALICTUS SANDHOUSE. 11 



near apex. Legs dark with dull whitish hairs; knees red; tarsi 

 somewhat reddened; hind spui" pectinate with five medium long 

 obtuse spines. 



Habitat. — Jumbo Keservoir, 9 miles east of Crook, Colorado, 

 August 12, 1921 (Sandhouse). One specimen. 



Type.— Cat. No. 26399, U.S.N.M. 



This species seems to be quite distinct and different from any 

 other Chloralictus known to the writer. 



HALICTUS (CHLORALICTUS) ELLISIAE. new species.' 



Female. — About 5 mm. long; head and thorax dark olive green, 

 abdomen black; pubescence dull white, rather sparse. Facial quad- 

 rangle longer than broad; orbits converging slightly below; antennae 

 dark brown; front very closely punctured; sides of face with coarser, 

 deeper, more scattered punctures; supraclypeal area shining, sparsely 

 punctured; lower two-thirds of clypeus black, with a few coarse punc- 

 tures; mandibles black. Mesothorax microscopically lineolate and 

 closely punctured; scutellum very closely punctured, two smooth 

 spots on the disk; disk of propodeum without a distinct inclosing rim, 

 microscopically reticulate between rugae ; mesopieurae coarsely punc- 

 tured; tegulae dark, punctured; truncation distinct, but not sharply 

 defined laterally. Abdomen broadly ovate, the only punctures pilifer- 

 ous; segments sparsely clothed with yellowish- white pubescence; apical 

 margins of segments brownish, transversely lineolate. Anterior wing 

 3.5 mm, long; wings clear hyaline; stigma and nervures dark testa- 

 ceous; second submarginal cell as broad as high at the base, but con- 

 tracted above, receiving the first recurrent nervure near apex; third 

 submarginal almost twice as long as second on marginal. Legs dark 

 with yellowish-white pubescence; inner spur pectinate with four 

 moderately long teeth. 



Habitat. — Forest Hills, Massachusetts, August 5, 1911. Received 

 from Dr. W. M. Wheeler. One specimen. 



Type.— Cat. No. 26400, U.S.N.M. 



Distinct from tegulariformis Crawford, from which it differs by the 

 darker tegulae and stigma; broader head; darker flagellum; more 

 closely punctured mesothorax; more robust species; distinct sculp- 

 turing of disk of propodeum. 



From tegularis Robertson by the shining head and thorax; darker 

 wings; tegulae darker, not reddish; darker flagellum; disk of pro- 

 podeum not granular, but with fine plicae. 



From pseudotegularis Cockerell, which is a very small and slender 

 species, with golden green mesothorax and scutellum, and with disk 

 of propodeum granular. 



5 Mrs. Ellis referred this specimen to hr<rlensU Lovell, t)nt the punctured tegulae seem to be distinct. 

 The species was named for Mrs. Ellis. 



