Hymenoptera aculeata collected in Algeria. 211 



Andrena impunctata, Per. 



$ 3. Biskra, on Ammi visnaga, 24, v, 93 and 5, vi, 'J7. 



{A. E. E.) 

 $10. „ i. iv to 25, V, 98. {F. D. M.) 



Andrena pusilla, Per. 



$ 1. Biskra, on Pcridcrca fit^cata , 4, ii, 94. {A. E. E.) 

 % 2. Constantino, on Eiplotaxifi mv.ralis, 9 and 22, v, 95. 



{A. E. E.) 

 $ 2. Algiers, 23, ii, 93. (A. E. E.) 

 % 1. Biskra, on Brassica najnts, 27, ii, 97. (A. E. E.) 

 %1. „ on Sonchus maritimus, 12, iv, 97. 



(A. E. E.) 

 $ 1. „ amongst Tamarix, 19, iv, 97. (A. E. E.) 

 ? 15. Algiers, 14, iii to 27, iv, 98. {F. D. M.) 



Andrena alpha. 



This ^ is peculiar in having the clypeus raised until just above 

 the anterior margin, so that the rounded front edge of the elevation 

 looks like the ajiex of the clypeus, it is very shining and remotely 

 punctured. Antenna^ dark testaceous beneath with the 2nd joint of 

 the flagellum shorter than the 2 following together, 3rd shorter 

 than the 4th, the rest rather longer than wide, slightly increasing 

 in length towards the apex. Face vertex and cheeks clothed 



with white hairs. Thorax clothed with white hairs. Mesonotuni 

 finely rugulose without evident punctures, propodeal area not clearly 

 limited, finely rugulose. Abdomen finely rugulose slightly shining 

 without definite puncturation, apical impressions well defined, rather 

 narrow, very pale, smooth and less sculptured than the rest of the 

 segments ; segments 2, 3, and 4 with white but not very conspicu- 

 ous lateral bands of hairs, tarsi excejit the metatarsi testaceous. In 

 size slightly larger than minutula. 



