xv, 3 Cocker ett: 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, fiagellum not 

 elongated, clypeus all black. 



Luzon, Mount Maquiling (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 lineolate; tegulae 

 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. Fiagellum short and 

 abdomen broad as in females. 



Luzon, Mount Banaho (Baker). A remarkable species. 



