58 Lieut.-Colonel C. T. Bingham on 
Megachile cordata, Smith. 
Megachile cordata, Smith, Descr. New Spec. Hym. B. M. (1879) 
pool, 2: 
Four females and three males, Pretoria, Lydenburg, and 
Masil Nek (Distant) ; Fort Johnston, Nyasaland (Rendall). 
Megachile maxillosa, Guér. 
Megachile mazillosa, Guér. Iconogr, Régn. anim. vii, Ins. (1845) 
p-. 449; Grib. Ann. Mus. Civ. Gen. xxi. (1884) p. 282. 
Four females, one male, Pretoria (Distant); Durban 
(A. Loss) ; Fort Johnston, Nyasaland (Rendall). 
Megachile ap*formis, Smith. 
Megachile apiformis, Smith, Cat. Hym. Ins. B. M. i. (1853) p, 162. 
A female and male ? from Waterval-onder (Loss). 
T am somewhat doubtful whether I have rightly identified 
the male; a description of it is subjoined, Smith having only 
described the female. 
3. Black, finely and closely punctured all over ; pubes- 
cence yellowish white on the head and abdomen, white on the 
thorax and legs. Head broader than long; eyes very large, 
their inner orbits convergent anteriorly ; mandibles rather 
narrow, with the apical tooth long and acute; clypeus trun- 
cate anteriorly, vertex broad and somewhat flat, the occiput 
slightly emarginate. Thorax more or less globose, convex 
above; the scutellum, postscutellum, and median segment 
with a rounded curve posteriorly. Wings hyaline ; nervures 
brown ; tegule black. Legs normal, the anterior tibiz not 
dilated ; abdomen short and broad, the sides slightly con- 
vergent posteriorly, the basal face of the first segment deeply 
concave, the remaining segments depressed at their bases, the 
apical segment with numerous teeth along its rounded poste- 
rior margin. 
Length, 6, 8:5; exp. 17 millim. 
Megachile tricarinata, sp. n. 
9. Black, very closely and somewhat coarsely punctured, 
the punctures running into reticulations on the face in front, 
on the vertex of the head, and on the scutellum ; the sides of 
the face along the inner orbits of the eyes, the sides of the 
thorax beneath the wings, a transverse line at the junction of 
the mesonotum and scutellum, the median segment, and 
narrow transverse bands, slightly broadened laterally, at the 
base and apical margin of the first and on the apical margins 
