Records of Bees. 451 



punctured, first segment very sparsely 



punctured dichrous, Smith. 



Area subcancellate with irregular wrinkles 

 (male abdomen largely red) hesperellus, Ckll. 



3. First abdominal segment with the apical 



half very distinctly and rather closely 

 punctured; area irregularly wrinkled; 

 mesothorax rather more densely punc- 

 tured than in dichrous ; abdomen broad, 



the apex hardly at all blackish anensis, Patt., Rob. 



First abdominal segment with very sparse 

 (sometimes hardly any) punctures .... 4. 



4. Second abdominal segment, beyond tho 



base, with very fine, relatively close, 



regular punctures 5. 



Second abdominal segment, beyond the 

 base, with very sparse punctures 0. 



5. Abdomen broad, chestnut colour ; wings 



very dark and very yellow arvensifurmis, Ckll. 



Abdomen narrower, paler, the last seg- 

 ment blackened ; wings hyaline, the 

 apical half smoky, but not yellowish ; 

 aspect of 'S'. coluuilnce lautus, Lovell k Ckll. 



6. Apex of abdomen broadly blackish 7. 



Apex scarcely or not blackish 8. 



7. Larger; mesothorax very shiny; wings 



hyaline ohjmjncus, Cldl. 



Smaller ; mesothorax duller ; wings with 

 a strong reddish suffusion obscurans, Lovell & Ckll. 



8. Face with a little white hair, but princi- 



pally coarse black bristles ; abdomen long 

 and pale; mesothorax densely punctured, 



the posterior middle sparsely columbke, Ckll. 



Face with hoary white hair 9. 



9. Mesothorax smaller, very shiny, less 



densely punctured, the median sulcus 



evident arroyanus, Ckll. 



Mesothorax larger, duller, more densely 

 punctured, the median sulcus not or 

 hardly evident pcrsimi/is. Lovell & Ckll. 



The three species of Lovell and Cockerell are from ]\[aine, 

 and are described in a paper which has been sent to ' Psyche ' 

 lor publication. 



Ilalictus scrophular'ue , C'kll., 1906. 

 Mr. S. A. Rohwer took 17 females at Florissant in June 

 11)07 ; of these, 15. were at flowers of SaVix hmchycarpa, one 

 at liihes vaUicola, and one at Taraxacum taraxacum. The 

 thorax varies from blue-green to brassy green. 



Andrena Porter (C, Ckll., 1900. 

 Florissant, 7 females, June 16, 1907 (S. ^1. Rohwer). Five 

 were at Riles lojigijlorum''^^ two at R. jnimilum. 



* The mountain form of R. lomjijtovum is li. leiohoin/:^, Kahne, as I 

 learn from Dr. N. L. Britton. I understand that it will be regarded 

 as distinct in a forthcoming part of ' North American Flora.' 



