620 The Philippine Journal of Science 1920 
Nomia incensa sp. nov. 
Female.—Near to N. levicauda Ckll., but somewhat larger 
(anterior wing, 7 millimeters long) ; wings strongly dusky apic- 
ally; mesothorax conspicuously larger; middle of front entirely 
dull; second abdominal segment very finely and closely punc- 
tured all over, the following segments dull, not polished and 
shining. The abdomen has a thin ventral scopa of long hairs. 
The second submarginal cell is large and square, receiving the 
first recurrent nervure considerably beyond the middle. The 
hind margins of the abdominal segments are rufous, and have 
broad ocherous hair bands, broadly interrupted on first seg- 
ment, more narrowly on second. Venter of abdomen partly 
fulvous. 
Luzon, Montalban (Baker). 
Halictus semirussatus sp. nov. 
Male.—Length, about 8 millimeters; anterior wing, a little 
over 6; head and thorax black, the mesothorax slightly blue- 
black; abdomen bright chestnut red, with a basal and two lateral 
blackish stains on first segment; legs black, with anterior and 
middle knees, and anterior tibiz in front (except apex) ferru- 
ginous, tarsi more or less reddish apically, hind basitarsi pallid 
at base. Eyes large, subemarginate within (inner orbits strong- 
ly concave) ; cheeks and sides of face with white hair; clypeus 
prominent, apically with a very broad (broadest in middle) 
creamy-white band, which is strongly and sparsely punctured; 
labrum cream color; mandibles ferruginous; antenne long, 
black, the flagellum obscurely brown beneath, not moniliform; 
front dull, shining at sides; thorax with dull white hair, dense 
on postscutellum ; tubercles prominent and angular, red at apex; 
mesothorax and scutellum very densely punctured, somewhat 
glistening; scutellum distinctly bigibbous; area of metathorax 
very large, strongly defined, shining, with very strongly longi- 
tudinal ridges, which are slightly divergent; sides of metathorax 
very hairy, posterior face sharply defined all round; tegule 
castaneous; wings hyaline, dusky at apex; nervures and stigma 
reddish brown; second submarginal cell square, receiving first 
recurrent nervure near the end; third submarginal cell un- 
usually short; outer nervures distinct; legs with pale hair, 
pale golden on inner side of tarsi; abdomen shining, first seg- 
ment hardly punctured, second duller, with very minute punc- 
