On Bees of the Genus ColletesyT-om New Mexico. 39 



given; the specific names of three of them end in "-iis" : (twimx^ 

 the bodj, is neuter ; therefore these names should end in 

 "^ -ii.m.'" But at least two of the five, viz. Zetes jiavipes^ Koch, 

 and Orihates fuscus, Koch, surelj belong to the genus 

 Notaspis^ not Leiosoma : then one is stated to be Leiosoma 

 miens, Geoffr. ; should not this be Gervais ? In the next 

 genus Cepheus, Carahodes coriaceus, Koch^ is introduced ; but 

 I cannot see how it can be considered a Cepheus, no ex- 

 planation is given. In the genus PeJops, P. fuligineus, Koch, 

 is given instead of P. hevigatus, Nic. : this may be correct, 

 for they are probably identical, and Koch's is the earlier 

 name ; but if so, Koch described this species three times — 

 first as Pelops acromios, Herm., which it is not, then as 

 P. fuligineus, and, finally, in all probability, as P. hirsutus : 

 his figures and descriptions hardly render certain identifi- 

 cation possible, and it would be far better, if it can be done, 

 to preserve Nicolet's name, which has a good description and 

 figure attached to it. In the genus Orihata (or Orihates) 

 Dr. Oudemaus adopts the masculine termination, but he 

 leaves almost all the species in the feminine : thus he puts 

 " Orihates palUduIa, Kocli," and 0. fuscomaculata, Koch; 

 but I do not think that Koch put adjective specific names 

 in the feminine when his genus was masculine. Orihata 

 coleoptrata (Linn.) is used instead of Hermann's well-known 

 name of alata ; but the species entirely relies on Hermann's 

 drawing, and although it is customary to suppose that it may 

 have been the Acarus coleojytratus of Linnaeus, it is far too 

 uncertain to adopt that name and drop Hermann's. Both 

 Orihates ovalis, Koch, and 0. nitens, Nic, are given ; it is 

 very doubtful if these be more than varieties. 



It must not for a moment be supposed from these remarks 

 that I underestimate the value of many of Dr. Oudemaus's 

 suggestions. 



VI. — Contrihutions from the New Mexico Biological Station. 

 — III. The Bees of the Genus CoUetes found in New 

 Mexico. By T. D. A. Cockeeell. 



A. Bather large forms of the type of G. inajqualis, with darl; 

 often scarcely banded abdomen in $ . 



(1) No dark hairs on thorax ; a shai-p straight transverse keel behind 

 the enclosui-e at base of metathorax. 



CoUetes utilis, sp. n. 

 $ . Length 11 millim., anterior wing Tj millim. 

 Stoutly built, black ; the rather long pubescence of face, 



