1^86 Messrs. T. D. A. Cockerel] and W. Porter on 



T. senescens by the supraorbital stripe being well detined and 

 continued to the nose, its much brighter colour, and white 

 underparts. 



Key to the Species. 



A. Five black stripes T. asiaticus. 



B. Three black stripes. 



Supraorbital line j'ellowish, not clearly defined .... T. senescens. 

 Supraorbital line white, well marked T. orientalis. 



XLVI. — Contributions from the New Mexico Biological 



Station. — VIII. The New Mexico Bees of the Genus 



Bombus. By T. D. A. Cockerell and Wilmatte 

 Porter. 



Bombus perixanthus, sp. n. (vel Hoioardi, var.). 



^ . — Length about 15 millim. 



Fairly stout ; pubescence black, except at the apex of the 

 abdomen, where it is white, and on the anterior part of the 

 thorax, where it is shining lemon-yellow. With the black, 

 liowever, is mixed more or less yellow on the face, vertex, 

 and third abdominal segment; while the hair on the scutellum 

 varies from entirely black to a rather dull yellow. The long 

 bristles on the hind tibia are mostly pale ferruginous. The 

 black hair on the abdomen occupies the first four segments, 

 the remaining segments being clothed with dirty white. 

 "Wings stained with brown, but not very dark. 



Stiucturally this insect agrees with B. Ilowardi^ and it 

 may be that it is a peculiar variety of that species; but even 

 in that case it deserves a name. It is in general appearance 

 very like B. occideritalis, but in that species only the tirst 

 three abdominal segments are black. 



Hah. Harvey's Ranch, near Las Vegas, New Mexico, 

 9600 feet, Aug. 22, 1899 (IK. Borter). Also between 

 Harvey's Ranch and Beulah, on the same day. 



Bombus ii'idis, sp. n. 



? . — Length 17 millim. 



Broad, with black and yellow hair. Hair of face black, 

 with a little yellow intermixed, of cheeks black, of vertex 

 black in front, otherwise yellow. First joint of flagellum 

 nearly as long as 2 and '^ together, 2 scarcely shorter than 3. 

 Thorax with dense lemon-yellow pubescence ; a l)road black 



