THE CANADIAN ENTOMOLOGIST, . 165 



extremely broad ; clypeus with small punctures throughout, except a medi- 

 an impunctate and very narrow line ; mandibles very long and slender, 

 strongly curved, with tips entirely ferruginous ; joint 3 of the very long 

 antennae shorter than 4 + 5 ; cheeks considerably produced, forming a 

 rounded angle above the middle of the eye; sixth and seventh abdominal 

 segments with thin fulvous pubescence. 



Milwaukee, Wis.; 4(^, 13 9 specimens taken between May 4 and 

 June 23, on various flowers. The colour of the pubescence varies from' 

 light ochraceous to bright fulvous in the female. One of my male 

 specimens has only 2 submarginal cells on each side. This species 

 resembles A. Hallii, Dunning, but the latter is a larger insect, and differs 

 otherwise from A. Milwaukeensis. In some of the females the patch of 

 fulvous pubescence on the abdomen extends even to the tip of the third 

 segment. This patch of light ochraceous or bright fulvous pubescence on 

 the first 2 or 3 abdominal segments separates this species from A. Hallii, 

 as also from any of the species oi Andrena flying in this locality. 



Andrena viburnella, n. sp. J . — Length 1 1 mm.; body robust, 

 black ; head, thorax and legs with very light ochraceous pubescence ; 

 vertex distinctly roughened, not punctured ; cheeks tessellate, finely and 

 closely punctured ; the thin pubescence is slightly longer on the lower 

 portion of the cheeks than on the face ; front coarsely striate, with a 

 median ridge extending from the ocellus to the base of the antennse ; the 

 upper one-third of this ridge is low, but the remaining part is very 

 prominent ; facial quadrangle broader than long ; antennae stout, dark 

 brown, with testaceous tips ; joint 3 about equaling joints 4 + 5, certainly 

 not longer ; facial foveae broad, with dark reddish-brown pubescence ; 

 clypeus shining, clothed with short hairs ; the punctures of the clypeus 

 are close and moderately coarse ; a median impunctate stripe is visible ; 

 process of labrum long, truncate ; mandibles black, ferruginous on their 

 apical halves, notched within near the tips ; mesonotum thickly covered 

 with short, stiff" hairs, its surface is dull, tessellate, with close, shallow 

 punctures ; scutellum shining, somewhat swollen, with a median 

 impression ; its punctures are closer and more distinct than those of the 

 mesonotum ; tegulse piceous ; wings dusky, nervures and stigma 

 ferruginous ; second submarginal cell not as broad as third, receiving the 

 first recurrent nervure at the middle ; metathorax coarsely roughened, its 

 enclosure defined by a faint impressed line ; the enclosure is somewhat 



