56 , THE CANADIAN ENTOMOLOGIST 



Halictus coronadensis, n. sp. 



Male — Length about 6.5 mm.; slender, head and thorax dark 

 green, abdomen \ery obscurely greenish, almost black; hair of 

 head and thorax moderately abundant, erect, pure white; clypeus 

 greatly produced, the free lateral margins not much less than half 

 diameter of apex; malar space short; mandibles with a ferruginous 

 subapical band; hair of face beautifully plumose, dense at sides; 

 supraclypeal area shining yellowish green; eyes deeply emarginate; 

 front dull; ocelli rather large; antenna* very long, flagellum light 

 fulvous beneath; mesothorax dull, with a minutch' granular 

 appearance; scutellum shining, sparsely punctured; area of meta- 

 thorax Avith very fine radiating stria?, and no sharp edge; posterior 

 truncation not sharp-edged; teguke fulvous, dark at base; wings 

 ample, hyaline, fainth' grc>ish, stigma and nervures dusky brown; 

 outer nervures not weakened; first r. n. joining second s. m. a short 

 distance before end; third s. m. much broader above than second; 

 legs black, the femora green behind; abdomen dull, appearing 

 minutely granular, constricted at the ends of the first three seg- 

 ments, the extreme margin coppery-red; no bands, but surface of 

 abdomen, especially at sides, with conspicuous erect hair; ventral 

 segments not modified, except that the sixth has a delicate median 

 raised line. 



Type locality, Coronado Islands, L. Calif., Aug. 21 {T. and W. 

 CklL). Also collected at La Jolla, California, August (Cockerell). 

 When I collected these, I supposed I was getting males of Halictus 

 catalinensis, of which the females occurred at the same place on 

 the Coronado Is., but on examination it is impossible to associate 

 the insects, which differ in many particulars, but especialh- in the 

 shape of the fac\ The male of H. catalhiensis is presumably 

 more or less like that of the allied H. provancheri, but the new form 

 is entirely different from provancheri. It appears to be a quite 

 isolated form, standing between Halictus and Augochlora. The 

 strongly emarginate eyes would suggest its reference to Augochlora, 

 but the venation and coloration are those of Halictus. 



Halictus grinnelli, n. sp. 



Female. — Length about 5.5 mm.; robust, head and thorax 

 olive green, abdomen and legs black; pubescence white, not very 



