THE CANADIAN ENTOMOLOGIST. 147 



scutellum and postscutellum ordinary ; metathorax with a transverse 

 subbasal ridge, very prominent, enclosing a band like shining area which 

 is more or less plicate ; legs black, the tarsi (especially the hind tarsi) 

 broad ; anterior basitarsi, and apex of their tibiae, with orange hair ; apex 

 of hind basitarsus fringed with bright orange hair ; base of hind basitarsus 

 above ferruginous ; abdomen broad, densely punctured ; wings dusky, the 

 apical margin broadly darker ; stigma ferruginous, nervures rather pale 

 brown : marginal cell very obtuse at apex ; second s. m. very broad, 

 receiving first r. n. beyond its middle. 



Hab. — Hinterland of Benguella, \V. Africa, Jan. 3, 1908, taken with 

 many other bees at a patch of flowering Compositse, Othofuia and 

 Geigeria spp. (IVellman). This species is not truly congeneric with such 

 forms as N. ehiivensis^ but I should prefer to examine a larger series of 

 the African species commonly assigned to Dlomia before proposing any 

 segregated genera. 



No mi a Bakeri, Ckll., 1898. 



This species was described from the male only. K female was taken 

 by Mr. S. A. Rohwer at Boulder, Colorado, Sept. 16, 1907. It agrees with 

 the male, except in the usual sexual characters ; the tibiae and tarsi are 

 entirely clear ferruginous, with yellowish-white hair. The sixth abdominal 

 segment is clothed in the middle with appressed bright orange-ferruginous 

 hair. The wings are very yellow, with the apical margin broadly 

 infuscated. 



Calliopsis co/orade7isis, Cresson, 1878. 



(^ . — Length, 8 mm.; black, with abundant white pubescence; face, 

 knees, tibiae and tarsi lemon-yellow, the small apical joints of the tarsi 

 ferruginous. The abdomen is broad and flattish, like that of a female ; 

 the hind margins of the segments are rather broadly hyaline, with thin 

 white hair^bands. Head broad ; eyes green ; labrum yellow, prominent, 

 concave, with a central dark spot ; mandibles yellow except apically ; 

 supraclypeal and dog-ear marks present ; lateral face-marks large, 

 extending above level of supraclypeal mark, ending in an acute angle on 

 the orbital margin : scape yellow in front ; flagellum ferruginous beneath ; 

 prothorax yellow above ; tubercles dark ; wings clear, nervures and 

 stigma ferruginous ; anterior femora with the apical half in front yellow; 



