Records of Bees. 367 



Pulvilli present; basin o£ first abdominal segment with 

 sliarp edge ; middle and hind femora and tibiae clear chestnut- 

 red ; facial quadrangle much longer than broad, with a broad 

 band of white ])ubescence at each side ; stignia ferruginous. 



Meade-Waldo has placed M. elfroma and saphira, Cameron, 

 with this species in the British Museum. These are males, 

 with abdomen curled under apically, and shining testaceous 

 borders to the closely punctate segments ; the b. n. fails to 

 reach t.-m. The tibiae and tarsi are mainly red in saphira, 

 darker in elfroma, but they are certainly one species. I could 

 not see any pulvilli in elfroma. 



Gronoceras denticulata (Reiche). 



Friese's description of the male Megachile denticulata in 

 ' Das Tierreich ' is quite wrong. It is a Gronoceras, and lias 

 very broad pale anterior tarsi. The last ventral segment has 

 a stout truncate spine, and apex has two long curved spines 

 and a brush of black hair. 1 examined specimens in the 

 British Museum which agree with the original description 

 and figure. 



Ceratina dimidiata, Friese, 1910. 



Specimens in the U.S. National Museum, received from 

 Friese, show that this is identical with C. azteca, Cresson, as 

 determined (I believe correctly) by Crawford. 



CoUetes dudgeonii, Bingham, 1897. 



C. dentata, Cameron, 1898, is the same species. The male 

 has a short malar space. 



CoUetes reticidatus (Cameron). 



Andrena reticulata, Cam., and A. saevissivia, Cam. (mis- 

 printed sacrisbima in Bingham's work), are females of one 

 species of CoUetes. The malar space is about twice as broad 

 as long ; upper part of supraclypeal area highly polislied. 

 Specimens of both supposed species are in the Rothney 

 collection at Oxford and in the British Museum. 



CoUetes phcedra (Cameron). 



Andrena phcedra, Cam., is a male CoUetes, with darker 

 tegulae than reticulatxis. I decided tiiat it was the male of 

 reticulatus, but found a male placed witii saevtssima in tlie 



