830 Trans. Acad. JSci. of St. Louis. 



The Apis sericea Forst. may be the male of A. splendens on 

 account of the wings being described as " fuscae hyalinae,' 

 but that term might be applied to the other species except 

 the clearest winged examples. 



I have supposed that Andrena nigricornis F. might be the 

 male of A. splendens^ as perhaps the commonest species in 

 Georgia and the one to which " femoribus posticis incras- 

 satis " might likely be applied. But this description might 

 be used for any except A. vividulus. 



A. tricolor Cress, is probably A. texanus ^. In the Am. 

 Ent. Soc. collection I find no other Texan males except 

 one of A. viridulus. 



I am indebted to Mr. Cresson and Dr. Skinner for the 

 opportunity of examining the specimens of Agapostemon 

 contained in the collection of the American Entomological 

 Society. 



Andrena F. 



Andrena nubecula Sm. 



Andrena nubecula ^vaWh, Brit. Mus. Cat. Hym. I, 117, 9» 1853. 



Andrena nubecula Provancher, Addit. Faun. Eat. Can. Hym., 312, 9» 1888. 



^. — Black, clothed with thin whitish pubescence, that on 

 scutellum more yellowish ; head wider than thorax ; cheeks 

 strongly produced behind the eyes, rounded and subcarinate 

 posteriorly; face and clypeus closely and finely punctured, 

 the latter with long dense whitish pubescence ; basal process 

 of labrum strongly emarglnate, presenting two dentiform 

 angles ; mandibles long, decussate, rufous at tips ; third joint 

 of antennae as long as fifth, longer than fourth, flagellum 

 more or less dull testaceous beneath, vertex finely rough- 

 ened, shining, almost impunctate, front below ocelli striate ; 

 mesonotum almost impunctate, minutely roughened ante- 

 riorly, disc, as well as the scutellum, shining; inclosure of 

 metathorax finely roughened, more coarsely so at base ; 

 wings hyaline, clouded like the female, but less strongly, 

 marginal cell in front, the tip beyond, the apical margin, and 

 tip of hind wing; nervures and tegulae dull testaceous, stigma 

 darker, second submarginal less than half the length of 

 third, receiving first recurrent nervure about the middle; 

 legs blackish or dull ferruginous, tarsi testaceous; abdomen 



