10U TIIK (-.\NAI>1AN KSTnMot.iKSIKT. 



joint 3 about equal to 4 + 5. ('heeks broad and subqnadrate, sliining, 

 slightly convex, with an upturned rim along the hind margin, and a 

 rounded lower angle situated bc!o\v the middle of the eye. Thorax shin- 

 ing, covered with long and soft white pubescence, intermixed with short 

 and black |)ubescence on the mesonotum. Abdomen shining, with dis- 

 tinct apical bands of white hair on segments 2 to 4, widely interrupted on 2. 



Kleven (^ specimens from Milwaukee, the type locality. Hcsides, 1 

 have taken both sexes at Cedar Lake, Washington Co., Wis., and at 

 various points along the St. Croix River in r.orlh-western Wisconsin, from 

 the NeuLikagon River in Hurnett Co., on dt)wn to Karmington Township 

 in Polk Co. (Milw. I'ubl. Mus. coll. expcd.) 



As Prof. Cockercll has remarked (loc. cit. , p. 105), this species is 

 very close to A. /><trnasu'(e Ckll., but the latter makes its appearance later, 

 around the last week in .\ugust, and visits exclusively the flowers of 

 Parnassia carol iniatiu. A. Peckhami, on the other hand, flies from the 

 second week in July on to near the middle of .-Kuc^ust, and visits esjiecially 

 the rtowcrs of the Composita*. In the type specimens, as slated by Prof. 

 Cockerell, the first recurrent ncrvure joins the second submarginal cell at 

 its middle \\\ pamasiut, and considerably beyond the middle in Peckhami, 

 but a series of specimens shows these characters as being variable, and 

 therefore not reliable in separating the two. The i)resence o\ distinct 

 abdominal hair-bands in the male of Peckhami distinguishes it from the 

 male o{ />arnassiie, and the two differ besides in the shape of the cheeks, 

 which are subquadrale in Peckami, subtriangul.ir, with a distinct angle 

 above the middle of the eye in parnaisue. 



Atidrena clyptonittns Ckll. 



A. clypfouitein Cockerell, (!.\n'. Km., X,\XI\', 47, 9 • 

 ^. — Length about 9 mm. Hlack, with ochreous pubescence as in 

 the female ; head, abdomen and legs shining, thorax dull. .-Kniennie black, 

 joint ,^ slightly longer than 5. the latter equalling 4. Mandibles long and 

 curved, black, notched near the apex. Cheeks broad, shining, subtrian- 

 gular, with a reflexed hind margin and a distinct angle slightly above the 

 middle of the eye. lx"gs black, posterior tarsi somewhat ferruginous. 

 Abdomen with bands of short ochreous hair on the posterior margins of 

 segments 2 to 4 in one of the specimens (No. 31727. Milwaukee, .\ugust 

 18, 1908); in the second (\<i. 29014. Neujakagon River, lUirnelt Co., 

 Wis., July 25, 1909), these bands are not devclo|)ed. Both males in the 

 collection of the .Milw. Publ. Museum 



This bee has been found also at Cedar Lake, Washington C'o., Wis. 



