1908] LOVELL — HALICTIDAE OF SOUTHERN MAINE 37 



yellowish-red in the middle, darker at base and apex; flagellum testaceous beneath, 

 joint 4 longer than 2 plus 3 ; tegulae black, nervures and stigma dark bro^ai ; legs 

 black, tibiae entirely so, tarsi reddish-bro^\ai ; area of metathorax rougher than in the 

 female, with many parallel rugae extending to the posterior margin ; abdomen entirely 

 black, apical margins of segments very slightly testaceous. 



Halictus quadrimaculatus Robt. 



1890 Halictus quadrimaculatus Robt. (not Schenck), 9 cj*, Trans. Am. Ent. Soc. 

 17:' 316. 



1895 Halictus macoupinensis Robt. Trans. Am. Ent. Soc. 22: 117. 



1905 Halictus divergens Lovell, 9, Can. Ent. 37: 299. 



The female specimens were collected on the garden blackberry, June 24; Rosa 

 humilis, July 4; and Aralia hispida, July 27. The INIaine bees were at first thought 

 to differ from typical material in the longer head and darker wings, but more extended 

 comparison shows that these characters are not constant. At most the local form 

 is only of varietal importance. 



Halictus nelumbonis Robt. 



1890 Halictus nelumbonis Robt. $ c?. Trans. Am. Ent. Soc. 17: 316. 

 Two females on Nymphaea (Nuphar) advena; an oligotropic visitor of the 

 Nymphaeaceae . 



(Chloralictus). 



Halictus pilosus Sm. 



1853 Halictus pilosus Sm. ?, Cat. Hym. Brit. Mus. 1: 71. 



1895 Hahctus pilosus Robt. c?, Trans. Am. Ent. Soc. 22: 117. 



Female on Salix, May 7; S. Bebbiana, May 12; Epilobium angustifolium, July 

 20; male on Solidago, Aug. 21-22. Rare in this locality. The Maine specimens 

 are generally smaller than a large series received from Elkhart, Indiana, where it 

 seems to be a common bee. 



Halictus pilosus Sm. var. leucocomus n. var. 



9 . — Length 6 mm. Closely allied to H. pilosus in its brassy green color, yel- 

 lowish wings, punctuation of head and mesothorax, and in the longitudinal striae 

 on the area of the metathorax. It differs from H. pilosus and is allied to H. pruinosus 

 in the color of the pubescence, which is nearly white or only tinged with yellow. The 



