148 THE CANADIAN ENTOMOLOGIST. 



in a broad triangle. Tongue short, pointed, daggerlike, its margin 

 entire. Labial palpi 4-jointed, first joint long, but not excessively so, 

 nearly as long as 3 and 4 together, these being about equal ; 2 somewhat 

 shorter than 1. Maxillary palpi 6-jointed, first three joints moderately 

 stout, the other three very slender;^ conspicuously longest, all the others 

 about equally long. No ventral scopa in $ . 



Hesperapis elegantiila, n. sp. — $. Length, 6^^ mm.; head and 

 thorax black, abdomen dark ferruginous. Head oblong, facial quad- 

 rangle considerably longer than broad ; face and cheeks with short snow- 

 white pubescence, vertex with ochreous pubescence ; clypeus with minute, 

 rather sparse punctures ; mandibles slender, reddish except at the extreme 

 base, armed with a small tooth on the inner side ; labrum clear ferrugi- 

 nous ; antennae short, especially the flagellum ; scape and the rather large 

 funicle black, flagellum brown ; eyes dark, with a perceptible sage-green 

 tint ; pubescence of mesothorax and scutellum short and mosslike, with 

 long hairs intermixed, ochraceous throughout, almost hiding the densely 

 punctured surface ; pubescence of poslscutellum, metathorax and pleura 

 white; basal triangle of metathorax minutely roughened, free from pubes- 

 cence ; tegulse testaceous, pubescent ; wings not reaching as far as tip of 

 abdomen, hyaline, slightly milky or opalescent, stigma honey colour, 

 nervures brown, subcostal nervure black  legs black, the knees and the 

 hind tibite behind, reddish ; pubescence of legs dull white ; middle tarsi 

 with a brown brush within ; small joints of anterior tarsi with long dark 

 lateral pencils of hair ; outer side of hind tibia, and of basal joint of hind 

 tarsus, with minute snow-white dense pubescence, and numerous long 

 black bristles ; abdomen somewhat depressed, of ordinary form, with five 

 entire broad white hair-bands on the apices of the segments ; the exposed 

 ferruginous surface between the bands very minutely and closely punc- 

 tured ; fifth segment and apex with black bristles ; pygidium shining, 

 impunctate, with a small groove near its end ; venter ferruginous, with no 

 conspicuous pubescence. 



Hab. — Mesilla Park, New Mexico, on campus of the Agricultural 

 College, April 22, 1898, at flowers of Dithyrcea wislizenii probably, 

 possibly at Se?iecio. Collected by Mr. C. M. Barber. 



This remarkable little bee seems to be most nearly allied to 

 Aj)i?Hobates ( Fhileretnus), but it differs entirely in the mouth-parts, and 

 might probably form a new tribe. From its structure and appearance it is 

 probably parasitic in the nesls of some other bee, 



