274 
Philippine Journal of Science 
1919 
Nueva Viscaya Province, Imugan {Baker). It appears to be 
abundant at Baguio, but is represented by a few specimens 
from the other localities. 
Halictus pliilippinensis Ashmead. 
Halictus pliilippinensis Ashmead, Proc. U. S. Nat. Mus. 23 (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 Banos 
{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). Basxlan {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 Banos carries a manuscript name given 
by Friese. 
Halictus pliilippinensis var. nigritarsellus 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 Banos, 
Luzon. All from Baker. 
Halictus thoracieus sutslustrans subsp. nov. 
Female. — Length, about 6 millimeters; similar to H. thoraci- 
cus 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. 
