276 Philippine Journal of Science i9i» 



punctate; area of metathorax rather large, dull, microscopically 

 rugose, with a slight tendency to plication basally ; tegulse testa- 

 ceous, with a yellow spot ; wings hyaline, with pale ferruginous 

 stigma and nervures; first recurrent nervure joining second 

 submarginal cell some distance before its end; third submar- 

 ginal cell much broader in middle than second; outer recurrent 

 and transverse cubital weakened; posterior face of metathorax 

 densely covered with hair; legs with pale ocherous hair; hind 

 spur with four long slender spines and a fifth rounded rudi- 

 ment; abdomen broad, moderately shining, with a sericeous 

 surface; basal part of first segment with dense pale ocherous 

 hair, and segments 2 to 4 with dense basal bands; ventral seg- 

 ments polished and shining basally. 



Male. — Length, about 6.5 millimeters; clypeus with a broad 

 yellow apical band; labrum yellow; mandibles broadly yellow 

 in middle, but with a black spot at base ; scape yellow in front ; 

 flagellum rather long; dark areas on tibial smaller, and hind 

 basitarsi all yellow; hind margins of abdominal segments very 

 narrowly fulvous; apical plate very broad and rounded; third 

 ventral segment with a dense stiff brush of whitish hair along 

 the margin, not reaching the sides. 



Luzon, Laguna Province, Los Bahos (Baker), type locality; 

 Mount Maquiling {Baker) ; Pagsanhan (Baker), the male de- 

 scribed and 2 females: Manila (Eschscholtz) , type of H. manilas 

 Strand. Mindanao, Cagayan (Baker); Dapitan (Baker). 



A male from Mount Maquiling is Baker 2560. A very dis- 

 tinct species, on account of the color of the legs resembling 

 H. roepkei Friese, from Java. 



Halictus opisthochlorus sp. nov. 



Female. — Length, nearly 7 millimeters; anterior wing, 4.75 

 millimeters; black, with the upper part of the metathorax dark 

 blue-green; pubescence scanty, face with inconspicuous dark 

 fuscous hairs, mesothorax almost bare, sides of thorax with 

 thin white hair, abdomen without hair bands or patches, but 

 with a scopa of long, white, curled hairs on ventral surface; 

 head broad and short; antennas black, scape reaching to level 

 of ocelli; face and front dullish with a sericeous luster; meso- 

 thorax and scutellum dullish, with a sericeous luster and with- 

 out evident punctures ; area of metathorax with very fine stria?, 

 appearing granular under a lens; posterior truncation not 

 sharply defined; tegulse brownish black; wings dusky hyaline, 

 strongly iridescent; stigma and nervures piceous; second and 



