xv. 3 Cockerell: The Black Halictine Bees 279 
shining, without evident punctures, hind margins of segments 
rather narrowly hyaline; the cotype (but not the type) shows 
some pale tomentum at extreme bases of second and third seg- 
ments ; fifth segment covered with white hair ; venter with stiff 
white hair, but no curled scopa or lateral patches. 
Male. — Length, about 5 millimeters; slenderer, flagellum not 
elongated, clypeus all black. 
Luzon, Mount Maquiiing {Baker), 2 females and 1 male. 
The type is a female. 
Halietus scintillans sp. nov. 
Female. — Length, about 6 millimeters; like H. lionotulus, but 
larger, with the hind margins of the abdominal segments not 
hyaline, and the area of the metathorax without distinct striae, 
except at the extreme base, where they are very delicate. 
Luzon, Mount Banahao {Baker), 1. It is quite likely that 
additional material will prove this to be only a local race or 
variety of H. lionotulus. 
Halietus scapalis sp. nov. 
Male. — Length, about 8 millimeters; black, robust, having the 
general form and superficial appearance of H. oligostictus; 
head very large, face extremely broad ; cheeks very broad ; man- 
dibles ferruginous, black at base and apex; face and front 
glistening, with short pale ocherous hair; labrum chestnut red, 
with a pair of prominent projecting tubercles; clypeus closely 
punctured, with a median smooth raised band; scape slender 
and curved, basal half red; a groove running between the pos- 
terior ocelli; mesothorax and scutellum polished and shining, 
the mesothorax with rather close delicate punctures, the scu- 
tellum very sparsely punctured ; area of metathorax well defined, 
shining, its basal half with strong regular plicse; thorax with 
pale ocherous hair; mesopleura dullish, finely lineoiate; tegulse 
reddish; wings slightly dusky; stigma rather small, dark red- 
dish, nervures brown; first recurrent nervure joining second 
submarginal cell before its end; third submarginal cell very 
broad, much larger than second; outer nervures distinct; legs 
dark brown or nearly black, with pale ocherous hair, anterior 
knees red, tarsi ferruginous apically; abdomen broad, shining, 
first segment without evident punctures, second finely punc- 
tured ; pale tomentum at sides of base of segments 2 to 4 ; apical 
plate reddish, very broad and rounded. Flagellum short and 
abdomen broad as in females. 
Luzon, Mount Banaho {Baker). A remarkable species. 
