PROC. ENT. SOC. WASH., VOL. 20, NO. 8, NOV. 1918 181 



from Chile. The metathorax is much narrow. -r dors'dly, but has 

 the same general appearance, and the shape of the third submar- 

 ginal cell is the same. The strongly cmarginate eyes exclude it 

 from true Halictus. The next species, also a RhopaMctus, is still 

 more like Halictus. 



Rhophalictus chloronotus sp. n. 



Female. length nearly 8 mm., anterior wing 6.5 mm. ; robust formed as 

 in Halictus, but the eyes distinctly emarginate, and the large broad area 

 of metathorax, which is well bounded behind, without plicae; hair of head 

 and thorax dull white, rather abundant; abdomen with triangular hair- 

 patches at bases of segments 2 to 4 laterally; the apex, which is slightly 

 reddened, especially beneath, densely hairy. Head broad, black, nowhere 

 distinctly metallic; clypeus and supraclypeal area somewhat shining, but 

 not polished, not distinctly punctured; antennae dark; front dull and ap- 

 pearing granular, the surface microscopically roughened; mesothorax dark 

 green, dullish (microscopically tessellate) without evident punctures; 

 scutellum more shining, faintly greenish, not punctured; other parts of 

 thorax black; posterior truncation shining, the sharp margin only going 

 half-way up each side; tegulae dark reddish; wings very faintly dusky, 

 stigma and nervures reddish; second submarginal cell much higher than 

 broad, receiving first recurrent nervure before its end; third submarginal 

 cell broad, shaped as in R. corinogaster; legs very dark brown, with pale 

 hair; abdomen broad, black, the first segment brownish, hind margins of 

 second to fourth pallid brownish, venter with pale erect hair. 



Chile (E. C. Reed}. U. S. Nat. Museum. A pencilled label 

 gives the exact locality which looks like "Chacogut." I can- 

 not now be positive, but I believe this is the species with "meso- 

 thorax faintly greenish" (Trans. Amor. Ent. Soc. XXXI, p. 356) 

 which I saw in the British Museum, labeled with a manuscript 

 name by Spinola. It appears to be close to Halictus chloromelas 

 Alfken but is larger, without the violet-blue tints on head and 

 thorax. 



Halictus perzonatus sp. n. 



Female. Length about 8 mm., anterior wing 6.2, robust, black, the ab- 

 domen dorsally dark greenish, the hind margins of the segments dark brown ; 

 eyes rather strongly but not abruptly emarginate; clypeus produced, con- 

 vex, polished and shining, with sparse strong punctures; supraclypeal area 

 also shining; front dull; flagollum obscurely reddish beneath; appearing 

 granular under a lens, but the microscope shows dense minute but very 

 distinct punctures, the surface between tessellate; scutellum very finely 

 punctured, distinctly shining; area of metathorax with extremely dense 

 and delicate plicae, connected by cross-lines, so that the surface is subretic- 

 ulate, and seems finely roughened under a low-power lens; posterior 



