OF WASHINGTON, VOLUME XIX, 1017 1()7 



veins honey color; legs reddish, more yellowish apirally; coxae darker; 

 abdomen finely sparsely punctured with scattered ochraceous hairs and 

 slightly ochraceous hands in segments 1-5, segment <> almost entirely covered 

 covered with sim lar hair; venter largely rufous. 



Described from two males from San Diego ('oiinly, ('alii'., 

 collection Coquillett, the paratype somewhat less than 10 mm. long. 

 Type -Cat. No. 21161 U. S. N. M. 



Hesperapis arenicola new species. 



Mule. Length 10 mm. Black, with ochraceous pubescence, dense on 

 head and thorax and very dense and almost white below antennae; inner 

 orbits distinctly converging; mandibles dark with reddish tips; face finely 

 rather sparsely punctured; face in outline laterad of ocelli concave; cheeks 

 in outline at top of eyes concave; first joint of labial palpi about as long as 

 joints 2 and 3; antennae dark, obscurely reddish beneath at extreme tip; 

 mesoscutum and scutellum rather closely and finely punctured, the punc- 

 tures becoming sparse mesad; propodeum smooth, shiny, with a very short 

 dorsal row of longitudinal rugulae; posterior face of propodeum with scat- 

 tered punctures; tegulae black, wings slightly infuscated, stigma dark 

 brown, the margins darker, veins almost black; legs black with ochraceous 

 pubescence; abdomen with minute rather close punctures, with long scat- 

 tered ochraceous hairs and apical bands of lightly ochraceous hair on 

 segments 1-6. 



Described from seven males collected by E. A. McGregor with 

 the record "Indio sands, Coachello Valley, Calif., March 19, 1917." 

 Type. Cat. No. 21162 U. S. N. M. ' 

 The specimens vary in size from about 10.5 mm. to 8.5 mm. 



Epeoloides Giraud. 



The genus Viereckellq Swenk is a synonym and the included 

 species are obscura Swenk and pilosula Cresson; nearcticus Ducke 

 and ceanothina Cockerell are synonyms of pilosula. 



Trachusa manni n. sp. 



Male. Length 14 mm. Black, clypeus and lateral face marks, truncate 

 above and extending slightly above clypeus, creamy white; mandibles 

 3-toothed; pubescence on occiput and on dorsum of thorax deep ochraceous 

 tinged with reddish; on front light ochraceous, below antennae almost 

 white, on pleurae ochraceous fading into white below; clypeus wit h st rung 

 well .separated punctures, medially longitudinally elevated but not carinate; 

 facial quadrangle, measured from mandibles to top of eye slightly longer 

 than wide; punctures above antennae strong, close; inesosciit uni rugoso- 

 punctate; propodeum with a basal area extending onto posterior face and 

 denned by an impunctate line, the dorsal aspect of area with punctmv.- 



