274 Philippine Journal of Science »» 



Nueva Viscaya Province, Imugan (Baker). It appears to be 

 abundant at Baguio, but is represented by a few specimens 

 from the other localities. 



Halictus philippinensis Ashmead. 



Halictus philippinensis Ashmead, Proc. U. S. Nat. Mus. 28 (1904) 

 128; Cockerell, Proc. U. S. Nat. Mus. 36 (1909) 419; Crawford, 

 Proc. Ent. Soc. Washington 19 (1918) 169, 170. 



Luzon, Manila (Stanton) : Laguna Province, Los Baiios 

 (Baker) ; Mount Maquiling (Baker) : Mountain Province, 

 Baguio (Baker) : Tayabas Province, Malinao (Baker) . Leyte, 

 Tacloban (Baker). Panay, Antique Province, Culasi (Mc- 

 Gregor), June, 1918. Negros, Cuernos Mountains (Baker). 

 Mindanao, Davao (Baker) ; Cagayan (Baker) ; Zamboanga 

 (Baker). Basilan (Baker). Palawan, Puerto Princesa 

 (Baker) . 



This is the commonest and most widespread Halictus in the 

 Archipelago, extending from Luzon to Mindanao and Palawan, 

 A specimen from Los Bafios carries a manuscript name given 

 by Friese. 



Halictus philippinensis var. nigritarselhis var. nov. 



Male. — Hind tarsi dark; flagellum dark or dusky beneath. 

 The tarsi are entirely without yellow, but the last joint is fer- 

 ruginous apically. Type of the variety from Pagsanhan, La- 

 guna Province; others from Mount Maquiling and Los Bahos, 

 Luzon. All from Baker. 



Halictus thoracieus sublustrans subsp. nov. 



Female. — Length, about 6 millimeters; similar to H. thoraci- 

 eus Friese, from Java, but with the abdomen shining and 

 tegulse, stigma, and nervures piceous or black. The dense to- 

 mentum on the postscutellum is white, often with a delicate 

 ocherous tint. The species is very peculiar for the wholly dull 

 area of the metathorax, with large reticulations, and especially 

 for the sculpture of the mesothorax, which appears rough under 

 a lens but under the microscope is seen to have a raised network 

 or cancellation all over, entirely* different from the fine tessella- 

 tion often seen on the thorax of bees. 



Luzon, Nueva Viscaya Province, Imugan (Baker), 5 (in- 

 cluding the type) : Mount Banahao (Baker) , 2. Panay, An- 

 tique Province, Culasi (McGregor) , 3, at flowers of Homalanthus 

 populneus Pax, June 3, 1918. 



