330 Trans. Acad. Sci. of St. Louis. 



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

 accouDt 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. virididus. 



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

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

 one of A. virididus. 



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 Entomoloo-ical 

 Society. 



Andrena F. 



Andrena nubecula Sm. 



Andrena nubecula Smith, Brit. Mus. Cat. Hym. I, 117, 9> 1853. 



Andrena nubeada Provancher, Addit. Faun. Ent. 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 emarginate, 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 coarsel}'' 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 



