PROC. E.NT. SOC. WASH., VOL. 20, NO. 8, NOV. 1918 177 



'i* splendens, ISOl, Yoet. Cat. Col., vol. I, p. 0(1. pit. :>1. fi^. 20. 

 Huprestis sex-punctata, 1817, Schonherr, Syn. Ins., Kami. I, Pars. 3, 



;>. 255, no. 216. South America. 

 Col er sex-punctata, 1838, Cast. & Gory, Mon.Bupr., vol. 2, Gen. 



Colobogastor, p. 9, pi*. '2, fig. 7. Cayenne. 

 ('lii-i/.<i>lititliri.-< xcx-pnnctata, 1887, Waterhouse, Biol. Centr. Amer., 



vol. 3, pt. 1, p. 35. South America, Nicaragua. 

 Chrysobothris sex-punctata, 1903, Kerremans, Gen. Ins., Fasc. 12, p. 



184. Brazil. 



SOME HALICTINE BEES IN THE UNITED STATES NATIONAL 



MUSEUM (HYM.) 







BY T. D. A. COCKERELL. 



The present paper completes my study of the entire collection 

 of bees borrowed from the National Museum a few years ago. 

 The collection proves to contain 205 new species and variei i >s 

 but many of these, though in type, have not yet been published. 



Halictus bentoni sp. n. 



Ffinnle. Length about 8-8.5 mm., anterior wing about G. 5 mm.; black, 

 with the hind margins of the abdominal segments hyaline; pubescence dull 

 white, forming broad entire bands at bases of second and following ab- 

 dominal segments, but no bands on apical margins; clypeus rather pro- 

 duced, polished, with sparse distinct punctures; mandibles reddened 

 aoically; antennae dark, theflagellum very faintly brownish beneath; mes- 

 othorax den-civ and very distinctly punctured, shining between the punc- 

 tures; area of metathorax hardly defined, appearing rugulose under a ens; 

 posterior truncation with sharp but not prominent lateral margins, and no 

 dentiform angles above; legs black, tarsi reddened at apex; tc^ulae rufo- 

 testaceus; wings hyaline; stigma (which is large) and nervures clear yel- 

 lowish-ferruginous; abdomen moderately shining, but very finely and 

 closely punctured all over. Microscopical characters: front very densely 

 punctured; area of metathorax eanc-ellate; hind spur with broad obtuse 

 semicircular laminae. 



Kolul Mtihil, Southern Persia, Feb. 1906 (Frank />Y//ton), U. 

 S. Nat. Museum. This may be compared with //. albipes, but it 

 is more robust, with a longer head, and closely punctured first 

 abdominal segment. Two specimens were obtained. 



Halictus persicus sp. n. 



Female. Length about 5.5 mm., anteror wing nearly ."> mm. ; black, with 

 the hind margins of the abdominal segments testaceous; pubescence dull 



