3G4 THE CANADIAN ENTOMOLOGIST. 



Colleies inacquaUs, Say. 



1837 — Colletes inaequalis, Say. 9 J, Bost. Jour. Nat. Hist, 1:391. 



1859 — Colletes inaequalis, Leconte, ed. of S-iy's Writ., 2:770. 



1868 — Colletes propinqua, Cr. $ (^ , Proc. Bost. Soc. Nat. Hist., 

 12:165. 



1879 — Colletes inaequalis, Patton. Proc. Bost. Soc. Nat. Hist., 

 20:142. 



One female specimen on Salix, May 7, 1905. 



Colletes armattis, Patton. 



1868— Colletes inaequalis, Cr. (not Say). ?, Pr. Bost. Soc. N. H., 

 12:166. 



1879 — Colletes armata, Patton. 9 i ■, Proc. Bost. Soc. Nat. Hist., 

 20:143. 



1891 — Colletes s'pinosa, Robt. $ $, , Trans. Am. Ent. Soc, 18:60. 



F'emale taken on Solidago, Aug. 25 to Sept. 3 ; male on Solidago, 

 Aug. 20 to 28. 



Colletes america?tHS, Cr. 



1868 — Colletes americana, Cr. 9 6 > Proc. Post. Sac. Nat. Hist., 

 I 2:167. 



1879 — Colletes americana, Patton. Proc. Bost. Soc. Nat. Hist., 

 20:142. 



Female on Aster puniceus, Sept. 12 ; male on Solidago, Aug. 13, to 

 28, and Eupatorium perfoliatum, Aug. 24. A widely-distributed species. 

 Reported also from Illinois and New Mexico. 



Mr. Myron H. Swenk has kindly examined sijccimens of the species 

 enumerated in this paper and furnished the following description : 



Colletes mesocoptis, Swenk, n. sp. — %. Length, 8-9 J w nini. Clypeus 

 convex, shining, coarsely and irregularly striato-punctate. Front dull, 

 crowded with coarse shallow punctures and thinly-clothed with short gray 

 hair. Vertex closely double punctured, bare on sides, medially and the 

 occiput with erect, grayish hair. Cheeks with sparse, coarse, but weak, 

 punctures and thin ochreous-gray hair, except on extreme sides above, 

 where it is thin and black. Malar space about one-fourth as long as 

 broad. Antennae short, wholly black, joint 3 decidedly exceeding 4, 

 almost —4 + 5. Prothoracic spine short, sharp and distinct. Meso- 

 thorax with small, sparse, rather weak punctures, coarser on posterior 

 margin, the disk with a large polished impunctate area. Scutellum 



