Records of Bees. 239 
side of tarsi; appearance exactly like MM. holomelena, but 
differing thus :—Lower margin of clypeus slightly crenulate; 
median line of clypeus in middle shining, more or less free 
from punctures ; punctures of clypeus more distinct ; meso- 
thorax with much larger punctures, well separated on dise 
posteriorly. Wings darker, especially the upper part of 
marginal cell ; second s.m. larger ; ; .b.n, almost meeting t.-m. 
Bahia Blanca, Argentina (ZL. Bruner, 4). U.S. National 
Museum. 
The abdominal scopa is pure black, not brown-black as in 
M. chubutana. 
The following key separates five black species which look 
very much alike :— 
Hair of face (male) pure white except at 
sides ; abdomen closely punctured .... piwrensis, Ckll, (Peru.) 
Hair of face (females only known) without 
BNA MILT odis iio ve # eee SR ES Kas os kK, 
1. Ventral scopa light orange-fuly ous except 
Pi OM Pee a farsi a carpieds inset <cehad wisi a Lidl huaseari, Ckll. (Peru.) 
Ventral scopa black, whitish in middle; ; 
mesothorax entirely 0 9 eae enn gale, Ckll. (Peru.) 
Ventral scopa wholly black .............. 
2, Mesothorax with dense very fine punctures. UiGnion Ckll. 
Mesothorax with large well-separated punc- 
tures on disc posteriorly ..........., atramentata, Ckll. 
Megachile bruneriella, sp. n. 
fo .—Length 10°5 mm. 
Rather broad, but parallel-sided ; black, including the legs 
and the long slender antennee ; face densely covered with 
cream-coloured hair; underside of head with long white 
hair; vertex with black hair ; mesothorax mostly dull, but 
shining on dise, closely but rather weakly punctured ; scu- 
-tellum closely punctured, but glistening; mesothorax above 
with long hair, mostly white, but black on dise of mesothorax 
and most of scutellum ; pleura with black hair, but venter 
with white, and a tuft of white close to base of wings ; meta- 
thorax with black hair, but postscutellum with white ;_ tegulze 
piceous. Wings strongly suffused with brown. Anterior 
femora with a red area on inner surface; anterior tibie 
reddened behind; anterior tarsi obscurely reddish, rather 
robust, not modified, with a posterior white fringe a little 
longer than width of tarsi; anterior coxze with very short 
pointed spines; middle tarsi with shining creamy-white hair 
on outer side and long hairs behind ; hind tarsi with red hair 
on inner side. Abdomen short, the sixth segment vertical ; 
first segment with long whitish hair, the others with ochreous 
