Records of Bees. 367 



PulvilH present; basin of first abdominal segment with 

 sharp edge ; middle and hind femora and tibi£e clear chestnut- 

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

 band of white pubescence at each side ; stigma ferruginous. 



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

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

 with abdomen curled under apicaliy, 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 deniicfdata in 

 ' Das Tierreich * is quite wrong. It is a Gronoceras^ and has 

 very broad pale anterior tarsi. The last ventral segment lias 

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

 and a brush of black hair. I 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. 



Colletes dudgeonii, Bingham, 1897. 



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

 has a short malar space. 



Colletes reticulatus (Cameron). 



Andrena reticidata, Cam., and A. saevisshna, Cam. (mis- 

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

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

 as long ; upper 'part of supraclypeal area highly polished. 

 Specimens of both supposed species are in the Rothney 

 collection at Oxford and in the British Museum. 



Colletes phoidr a (Cameron). 



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

 tegulse than retiadutus. I decided that it was the male of 

 reticulatus, but found a male placed with saevissima in the 



