HENRY J. FRANKLTN. 141 



but dark in middle. Venter mostly dark, but with considerable pale 

 pile on apical half. 



Wings. — Very moderately infuscate ; veins so much darker than 

 membranes as to contrast considerably with them ; much the lightest 

 in the region beyond the veins, being, in this portion, almost clear 

 transparent. 



Legs. — Mostly dark ; hind femora and trochanters with a sprinkling 

 of yellow hairs on their lower sides ; middle tibise with a noticeable 

 amount of whitish hair on their inner sides and with hind fringes 

 faintly ferruginous. Hind tibise with outer faces slightly convex and 

 sparsely hairy on apical two-thirds; their fore fringes very moderate 

 and their hind ones long. Hind metatarsi between three and one-half 

 and four times as long as their greatest width ; their outer faces 

 strongly concaved ; their hind fringes long and of dark and ferrugin- 

 ous hairs mixed. 



Dimensions. — Length, about 16^ mm. ; spread of wings, about 39 

 mm. ; width of abdomen at second segment, about 8 mm. 



This species seems to have its closest ally in {raternus. 

 It can be separated structurally from any other Bombiis male 

 known to me. Its pile is of a character somewhat similar 

 to that of the male of 7-obustus. The position of the ocelli 

 and the degree of tumidity of the eyes are, however, dis- 

 tinctly diiTerent in the two species. This male may possibly 

 be a color variant of the unknown male of volucelloides, though 

 this seems highly improbable. The yellow pile of this spe- 

 cies is a pale, dirty, straw-yellow. 



Boiubus (Bombias) haueri Handl. 

 Bombus haueri Ant. Handlirsch, Ann. Naturh. Hofmus. Wien., HI, 

 1888, p. 234, 9 . 

 Dalla Torre, Cat. Hym., X, 1896, p. 521. 

 Cockerell, Cat. Abej. de Mexico, 1899, p. 19. 

 Franklin, Ent. News, XVIII, 1907, p. 91, 9 S c? . 



Types. — The queen type is in the collection of the k. k. 

 Hofmuseum at Vienna. The worker and male types are in 

 the collection of the United States National Museum. The 

 worker came from Meadow Valley, Mexico, and the male 

 from Eslava, Mexico. 



Pile rather short and fine. Malar space rather short. Wings and 

 legs dark. Females with head black, pleura black, dorsum, of thorax 

 yellow with broad black interalar band, dorsum of abdomen with two 

 basal segmeyits yellow and the rest ferruginous-red. Males similar to 



TRANS. AM. ENT. SOC. , XXXIX. 



