'J']() CONNECTICUT GEOL. AND NAT, HIST. SURVEY. [BuU. 



are very clear and well defined. The thorax as a whole is darker 

 than that of the female, the only light portions being the meso- 

 scutellum and the portion of the mesoscutar parapsida [scapula] 

 nearest it. The hind margin of the stigmal vein is more angular 

 than in the female. The faintly cloudy band below the marginal 

 vein is hardly distinguishable. The abdomen is short, much 

 narrower than the thorax, truncate, dark, and not showing 

 lighter bands, but lighter near the genitalia, which extrude, the 

 tips of these being nearly hyaline." 



Stonington, New Haven, October, 1913 (I. W. Davis) ; 

 Ridgefield, 8 December, 1914 (Q. S. Lowry) ; Hartford, New 

 Haven, 23 Septeniber, 1915 (B. H. W.). 



APOIDEA. 



ANDRENID^. 



Andrena claytoniae Robertson. 



A small to medium-sized species first described by Charles 

 Robertson in Transactions American Entomological Society, Vol. 

 xviii, page 59, as follows : — 



" Female : Black ; clypeus closely and strongly punctured, 

 often with a median impunctate line, basal process of labrum 

 rather long and narrow, emarginate or notched at tip; thorax 

 rather sparsely punctured with rather fine, shallow punctures, 

 thinly clothed with short, pale fulvous pubescence, enclosure of 

 metathorax rough with strong longitudinal rugae, with a poorly 

 defined border ; wings hyaline, nervures and stigma honey-yellow, 

 tegulse dull testaceous exteriorly, second submarginal cell re- 

 ceiving the first recurrent nervure near its apex; legs black, 

 inclining to dull ferruginous, the tarsi more or less yellowish, the 

 hind tarsi and sometimes the hind tibiae yellowish; abdomen 

 finely and rather sparsely punctured, the apical one-third of each 

 segment depressed, segments 2-4 with apical fasciae of whitish 

 pubescence, interrupted on the second, anal fimbria pale fulvous. 

 Length 8-10 mm. 



" Male. Resembles the female ; the tarsi, and often the pos- 

 terior tibiae, yellowish testaceous. Length 7-8 mm." 



This species visits the flowers of pear, plum, strawberry, red- 

 bud, shad-bush, Claytonia virginica, Zizia, aurea, Heracleiim 

 lanatum, Antennaria plant aginifolia, and Salix cordata. 



