xv, 3 Cockerell: The Black Halictine Bees 273 
Halictus nesiotus Crawford. 
Halictus nesiotus Crawford, Proc. Ent. Soc. Washington 1 9 (1918) 
169. 
Luzon, Mountain Province, Baguio ( Wirt Robinson ), type 
locality: Laguna Province, Mount Maquiling {Baker) , 4 females; 
Mount Banahao {Baker), 1 female. I have not seen Crawford’s 
type, but he has kindly confirmed my identification from a speci- 
men sent to him. 
Halictus nesiotus var. domitus var. nov. 
Another specimen from Mount Banahao is more robust, with 
red knees, bright ferruginous tegulse, and third and fourth ab- 
dominal segments (but not first and second) rather broadly 
margined with testaceous. It may be a distinct species, but 
for the present it may stand as a variety. 
Halictus baguionis Crawford. 
Halictus baguionis Crawford, Proc. Ent. Soc. Washington 19 (1918) 
170. 
Luzon, Mountain Province, Baguio {Robinson, Baker) : 
Mount Banahao {Baker) : Nueva Vizcaya Province, Imugan 
{Bake ?') . 
This species appears to be abundant at Baguio, but a few 
specimens have been seen from other localities. I have one 
of Crawford’s cotypes. 
Halictus luzonicus Strand. 
Halictus luzonicus Strand, Berl. Ent. Zeitschrift 54 (1909) 208. 
? Halictus manilx Ashmead, Canad. Ent. 36 (1904) 281. 
Halictus manilx Cockerell, Proc. U. S. Nat. Mus. 36 (1909) 420; 
Crawford, Proc. Ent. Soc. Washington 19 (1918) 169, 170. 
Strand’s type was from Luzon {Jagor) ; Ashmead’s, from 
Manila {Stanton). Ashmead’s type, preserved in the United 
States National Museum, is the same as IT. luzonicus; but Ash- 
mead’s description states that the insect, a female, is only 6 
millimeters long, and the head from the base of the antennae 
upward is greenish metallic. It appears probable that Ashmead 
began his description with one thing and finished with another, 
accidentally picking up the wrong specimen. At all events, 
I know of no species agreeing with his description and prefer 
to use the name luzonicus, which is supported by a full and 
accurate account of the characters. 
Luzon, Mountain Province, Baguio {Robinson, Baker) : La- 
guna Province, Los Banos {Baker) ; Mount Maquiling {Baker) : 
