by T. D. A. Cockerell. 311 
HERIADES PELLUCIDUS, sp. nov. 
3. Length 65-7 mm.; black, of the usual form, with pure 
white hair, forming slender bands on abdominal segments; head 
thick and quadrate ; eyes black ; facial quadrangle much longer than 
broad ; antenne black ; face and lower part of front with much long 
white hair; front with very dense large punctures; vertex with 
scattered punctures on a polished surface ; mesothorax and scutellum 
shining, with very large not very dense punctures; tegule piceous, 
punctured ; wings clear hyaline, stigma and nervures black ; recurrent 
nervures joining second submarginal cell close to base and apex 
respectively ; legs with abundant white hair; abdomen shining, 
strongly and evenly but not very densely punctured ; basin of first 
segment bounded by a sharp rim ; hind coxe with a short apical tooth. 
Three specimens were collected at Bellair, Natal, 31st December, 
1918 (K. C. Chubb). They were obtained from a hole in a wooden 
post. One, which has unfortunately lost its head, is smaller than the 
other two. Compared with H. bevisi, the vertex is much more 
sparsely punctured, on a polished surface. 
HALICTUS, susgenus PATELLAPIS, Friese. 
Friese, in 1909, proposed a subgenus Patel/apis for a group of 
Halictus, resembling in a general way the European calceatus, albipes, 
etc., but noteworthy for the large rounded apical plate on abdomen 
of the male (seventh segment). This is not in itself a very peculiar 
character; it may be found in other Halicti, and is especially 
conspicuous in a group of Australian species (//. cambagei, Ckll., and 
allies). Friese described three species of Patel/apis, all from Steinkopf 
in Namaqualand. In all, the clypeus of the male has the tegument 
entirely black, wherein they differ at once from the European calceatus 
and albipes. Strand, in 1911, added a species H. cwrwleodorsatus, 
from Ruwenzori; it differs from the others especially in having the 
abdomen above, except the first segment, more or less distinctly bluish. 
The type of Patellapis is herewith designated as P. schu/tzei, Friese, 
the first species described. I possess a male from the original lot. 
In the collection from Natal I find three species which clearly fall in 
Patellapis according to the diagnosis; but they also differ from true 
Halictus in the long and very slender tongue, in the manner of the 
genus Nesohalictus, Crawford, from the Malay Archipelago. eso- 
halictus also has the rounded apical plate, but the hind spur of the 
male is dentate, which is not true of the Natal males. Patellapis 
