216 PROCEEDINGS OF THE ACADEMY OF [March, 



DESCKIPTIONS OF NEW BEES COLLECTED BY MR. H, H. SMITH IN 



BRAZIL.-II. 



BY T. D. A. COCKERELL. 



Lithurgus corumbae n. sp. 



?. — Length 7 mm., black; with silvery-white pubescence, dense 

 on the face (except the elevated portion, Avhich is bare) and 

 cheeks; rather dense on metathorax (except basal area and middle 

 of sides) and pleura; hind margin of prothorax, and tubercles, 

 edged with dense white hair, forming a conspicuous white line; 

 lateral hind margins of abdominal segments 1 to 3, and the whole 

 hind margins of 4 and 5, with snow-white hair-bands; apical seg- 

 ment of abdomen, and dark parts of the two previous segments, 

 with some short black hair, but it is very inconspicuous, and there 

 is no apical fimbria; ventral scopa white, tinged with ferruginous 

 on the fifth segment; legs with white hair, that on hind tarsi long 

 and slightly ferruginous ; femora, and basal two segments of 

 abdomen, dark ferruginous; facial eminence rather low but dis- 

 tinct, obscurely bituberculate ; head and thorax strongly and 

 densely punctured; autenuai short, flagellum stout, and obscurely 

 brown beneath; tegulre dark reddish-brown; wings brownish, 

 nervures and stigma piceous; hind tibire with numerous short spines 

 on the outer side, as usual in the genus; spurs white. 



Hah. — Corumba, April. This is the smallest Lithurgus I have 

 ever seen, but L. nifipes Sm., from South Africa, is nearly as 

 small. The genus is new to the fauna of Brazil. The stigma of 

 L. cornmbce is somewhat larger than is usual in the genus. The 

 marginal cell is shaped as in the North American and European 

 species, not acutely pointed as in the Indian L. atratiis Sm. 

 Ceratina maculifrons Smith, 1853. 



Chapada, January. 1 $ . — Length 6^ mm. ; differs from 

 Smith's description by having no yellow on the four posterior 

 tibise, the sides of the metathorax having no white pubescence, and 

 the hind femora having an apical tooth or projection. The peculiar 

 face-markings, the tooth on the outer side of the hind tibia near 



