xv, 3 Cockerell: The Black Halictine Bees 273 



Halictus nesiotus Crawford. 



Halictus nesiotus Crawford, Proc. Ent. Soc. Washington 19 (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 

 {Baker) . 



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 manilss Ashmead, Canad. Ent. 36 (1904) 281. 

 Halictus manilas 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 {Sta?iton) . Ashmead's type, preserved in the United 

 States National Museum, is the same as H. 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 antennse 

 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) : 



