322 Trans. Acad. Sci. of St. Louis. 



Halictus cephalotes Dalla Torre. 



Halictus cephalicus Robertson, Am. Nat. XXVI, 270, <?$ 1892 (nee. 



Mor.). 

 Halictus cephalotes Dalla Torre, Cat. Hym. X, 57, 1896. 



Halictus coriaceus Sm. 



Halictus coriaceus Smith, Brit. Mus. Cat. Hym. I, 70, $, 1853. 

 Halictus subquadratus Smith, Brit. Mus. Cat. Hym. I, 72, $, 1853. 



Halictus ligatus Say. 



Halictus ligatus Say, Bost. Journ. Nat. Hist. I, 396, ^?, 1837, Lee. 



Edit. II, 774. 

 Halictus poeyi Lepeletier, Hist. Ins. Hym. II, 271, J 1 , 1841, Cuba. 

 Halictus capitosus Smith, Brit. Mus. Cat. Hym. I, 67, $, 1853. 

 Halictus armaticeps Cresson, Trans. Am. Ent. Soc. IV, 250, $ , 1872. 

 Halictus tezanus Cresson, Trans. Am. Ent. Soc. IV, 251, J 1 ?, 1872. 

 Halictus ornatipes Cresson, Trans. Am. Ent. Soc. IV, 252, tf, 1872. 

 Halictus townsendi Cockerell, Ann. and Mag. Nat. Hist. Ser. 6, XVIII, 



293, $, 1896. 



This is a common, widely distributed and variable species. 

 I have examined specimens from Ct., N. Y., Va., Fla., Cuba, 

 Tenn., 111., Montana, Wash., Cal., So. Cal. Local specimens 

 vary in length, in the females from 7 to 11 mm., in the males 

 from 6 to 10 mm. The wings are more or less hyaline. 

 Local males have the legs as in Say's description with the 

 middle and hind tibiae spotted, or these parts may be wholly 

 yellow, and even the femora almost entirely so. 



Florida specimens, H. capitosus Sm., seem to run a little 

 larger, with the wings less hyaline, and the mesonotum a little 

 more finely punctured. They barely form a geographical 

 race, and that is more than can be said of the other forms, as 

 far as present indications go. 



H. texanus is based on individuals in which the ground 

 color indicates more or less of ferruginous. Such specimens 

 occur in Illinois, and I have seen them in material from 

 Montana. 



Halictus smilacinae 5. 



Form rather slender; head dark blue green ; face densely 

 and finely punctured ; clypeus produced, with a purplish reflec- 

 tion, sparsely and coarsely punctured; mandibles rufous at 

 tips; antennae short, the scape long ; mesonotum dark green, 

 finely roughened, rather sparsely punctured ; metathorax 



