xv, i Cockerell: Metallic-colored Halictine Bees H 
male; Cagayan {Baker), male. The male has the form of a 
female, as in certain Australian species, and the only conspicuous 
differences are in the longer antennae and the caudal end of the 
abdomen. 
Halictus subpurpureus sp. nov. 
Female. — Length, about 6.5 millimeters; head very dark 
greenish, almost black ; mandibles rufous at apex ; clypeus feebly 
and sparsely punctured; supraclypeal area purplish; front with 
a sericeous luster ; antennae entirely black ; mesothorax yellowish 
green, shining but not polished, without evident punctures; scu- 
tellum and hind margin of mesothorax glaucous green; area of 
metathorax large, with a very fine irregular reticulation; pos- 
terior truncation not sharply margined at sides; tegulae dark 
brown ; wings dusky, stigma black ; first recurrent nervure 
meeting second transverse cubital ; third submarginal cell narrow, 
quadrate, shaped nearly like the second; legs black; abdomen 
dorsally shining without bands and without evident punctures, 
the general color black, but the base greenish and the middle 
segments conspicuously suffused with purple ; venter with large 
tufts of pale ocherous hair at the sides of the segments. 
Luzon, Baguio, Benguet {Baker). Related to H. pervarians, 
but larger, with mesothorax more shining, and abdomen suf- 
fused with purple. 
Halictus pervarians sp. nov. 
Female. — Length, about 5.5 millimeters; head rather small, 
glaucous green; antennae black; mesothorax and scutellum 
yellowish green, shining but not polished, without evident punc- 
tures; mesothorax with a median longitudinal depression; area 
of metathorax appearing dull and granular under a lens, the 
broadly rounded margin shining; tegulae pale brown, dark at 
base; pleura bluish green; wings faintly dusky; stigma black; 
first recurrent nervure meeting second transverse cubital; third 
submarginal cell short; outer nervures of third submarginal and 
outer discoidal cells weakened; legs black; abdomen without 
bands, black with a greenish or brassy tint. Ventral segments 
of abdomen with lateral ocherous tufts as in H. subpurpureus. 
Variety a. Front peacock green and supraclypeal area purple. 
Variety b. Length, about 5 millimeters; tegulaj pale testaceous; tarsi 
ferruginous; stigma brown. 
Variety c. Flagellum reddish beneath; mesothorax and scutellum very 
dark green; area of metathorax dark bluish. Stigma black as in 
the typical form. 
