tHE CANAI)IAN ENtOMOLOGlSt. 25 



EXOMALOPSIS, A NEOTROPICAL GENUS OF BEES 

 IN THE UNITED STATES. 



BV T. D. A. COCKERELL, N. M. AGR. EXP- STA. 



The genus Exomalopsis, Spin., was founded in 1851 on a couple of 

 bees from Para, Brazil. Three years later, F. Smith described three 

 additional species, also from Brazil. More recently, species have been 

 described or recorded from Cuba, Jamaica, and Mexico, but none hitherto 

 from the United States. One species, E. pulc/ieila, Cr., has a remarkable 

 range, being found in Cuba (Cresson), Jamaica (Fox), and Lower Cali- 

 fornia (Fox). I myself have taken it in Jamaica. 



The species now described has rather an extensive range in the upper 

 Sonoran zone of New Mexico. 



Exomalopsis solani, n. sp. — 9 about 8 mm. long, anterior wing 

 about 6 mm. Black, polished, very shiny, pubescence all pale. Head 

 broad, subtriangular seen from the front, eyes narrow; occiput and cheeks 

 fringed with pubescence, silvery-grayish and subappressed on cheeks ; 

 erect, duller, and subochraceous on occiput. Vertex bare, but the 

 occipital hairs extend forward behind the ocelli. Front with copious 

 white hairs, seeming to radiate from the antennal sockets ; clypeus and 

 labrum with rather thin yellowish pubescence. Antennae black, the last 

 half of the flagellum becoming rufous ; 2nd joint of flagellum equal with 

 3rd, or, if anything, rather shorter. Mandibles black ; 4th and 5th joints 

 of maxillary palpi of equal length, 6th shorter. In another specimen the 

 4th joint is clearly longer than the 5th. Glossa reddish, the tip obtuse. 



Thorax with rather dense pubescence, except the scutellum, hind half 

 of mesothorax, and dorsum of metathorax, which are bare. The dorsal 

 pubescence is dull yellowish-gray, with even a few black hairs immediately 

 behind the scutellum and at the sides of the mesothorax ; on the hind 

 border of prothorax is some dense short pale pubescence, showing 

 through the longer hairs. At the sides of the metathorax and on the 

 pleura the pubescence is whitish. The exposed portions of the meso- and 

 metathorax are practically impunctate, but the pleura is very strongly 

 punctured. Teguhe large, piceous. Wings smoky-hyaline, stigma and 

 nervures piceous ; marginal cell long, pointed ; 2nd submarginal not half 

 as big as the ist or 3rd, a little narrowed above; 3rd submarginal 

 narrowed nearly one-half to marginal. Femora and tibiae black ; tarsi 

 rufescent. Pubescence of legs whitish, that of tarsi reddisii behind. 

 Tibio-tarsal brush of hind legs very large, the hairs very distinctly plumose, 



