204 Mr. T. D. A. Cockerell—Descriptions and 
means sure that the forms described below are truly con- 
generic. The interesting point is, that we have the subfamily 
Diphaglossine, so characteristic of Australia, New Zealand, 
and South America, clearly represented in South Africa. 
It is also remarkable that the female, which though a 
different species from the males, seems to be certainly con- 
generic, has depressed facial foveze as in Andrena, though 
they are not hairy. I trust that Dr. H. Brauns, of Willow- 
more, who informs me that he is again actively engaged in 
the preparation of papers on South African bees, will be able 
to obtain fresh material of the various South African Dipha- 
glossines, and establish the several genera on a firm 
foundation. 
Polyglossa heterodoxa, sp. nu. 
$ .—Length about 13 mm., rather narrow ; anterior wings 
8°5 mm. long, not reaching to end of abdomen. 
Black, with the anterior tibiz mainly bright ferruginous, the 
anterior knees and small joints of all the tarsi also reddened ; 
head and thorax with very abundant long hair, mainly white, 
but tinged with ochreous on scutellum and metathorax ; 
head broad ; malar space very short ; mandibles long, with an 
inner tooth a considerable distance from the apex ; tongue 
as in Colletes ; maxillary palpi short, 6-jointed ; labial palpi 
with four subequal joints, but the first is somewhat longer 
than the second, and the slender fourth joint is longer than 
the third ; scape black, curved, with long hair; flagellum 
moderate, ferruginous, not at all moniliform; front dull and 
granular, but there is a smoother channel on each side; 
ocelli rather large, in a curve ; mesothorax and scutellum 
shining, coarsely punctured; area of metathorax triangular, 
the basal part rugose, the apical shining; tegulw piceous 
with a hyaline margin. Wings hyaline, nervures fuscous, 
the very narrow stigma ferruginous, with a fuscous margin ; 
marginal cell narrowly rounded at end, with a slight appen- 
diculation; b.n. falling some distance short of t.-m.; two 
long submarginal cells, the second receiving both recurrent 
nervures, the first near the base, the second a considerable 
distance from the apex, second submarginal very broad 
above; second recurrent nervuré without any trace of the 
Colletes curve. Hind femora greatly enlarged, broadly oval; 
hind tibize broadened, with an enormous auteriorly directed 
apical expansion or lamina, triangular, the outer surface | 
shining, and with an obtuse angle near its base below. 
Abdomen with long pale hair, tinged with ochreous, on first 
