224 The Philippine Journal of Science 1920 
abdominal segment black; head broad, eyes green; mandibles 
simple; antennae very long; scape long and swollen, bright red; 
flagellum black, obscurely reddish beneath; third antennal joint 
long, equal to fourth; mesothorax dull; scutellum presenting 
two large brighter red spots, close together; base of metathorax 
largely shining; tegulae red; wings dusky on apical margin; 
stigma and nervures dark brown ; basal nervure going basad of 
transverse median; three submarginal cells, second receiving 
recurrent nervure in middle; abdomen broad, shining, apical 
plate deeply notched; legs red, the hind femora with a dark 
mark above near end. 
Borneo, Sandakan. Nearest to N. testaceobalteata Cameron 
from Kuching, Borneo, but easily known by the almost entirely 
red color, like that of a female. It is very distinct from all the 
Philippine species. 
Genus MEGACHILE Latreille 
Megachile tarsatula Cockerell. 
A female from Sandakan ( Baker 9969 ) does not differ from 
those collected in the Philippines (Mindanao, Palawan, and 
Negros) . 
Genus PROSOPIS Fabricius 
Prosopis opacissima Cockerell. 
Male. — Length, about or nearly 5 millimeters; not very ro- 
bust; black, with the following parts lemon yellow: Clypeus, 
cuneiform lateral face marks (filling space between clypeus and 
eye, and ending broadly but obliquely above at antennae) , labrum 
except margin, greater part of mandibles, interrupted band on 
prothorax (not nearly reaching tubercles), tubercles, spot on 
tegulae, anterior tibiae except a large spot behind, basal half of 
middle and hind tibiae, and all the tarsi (small joints rufescent). 
Eyes strongly converging below, so that lower part of face is 
narrowed; antennae long, scape with a yellowish stripe, flagel- 
lum dusky ferruginous beneath; front densely and minutely 
punctured; mesothorax dull and densely punctured; scutellum 
with larger less-crowded punctures; area of metathorax with 
transverse sulci, the whole effect resembling the picture of a 
bird in flight; wings dusky, stigma and nervures dark, first 
recurrent nervures meeting first transversocubital ; abdomen 
shining on first two segments, with excessively fine punctures, 
