BY T. D. A. COCKEHELL. 163 



lowly eiiiargiuate ; clypeiis broad, not produced ; cheeks in 

 lateral view narrower than eye ; mandibles dark ; clypeus and 

 supraclypeal area shining, front minutely granular ; antennae 

 dai'k ; mesothorax and scutellum dull, very minutely punc- 

 tured, scutellum slightly bigibbous ; area of metathorax large, 

 dull, with an exceedingly minute subcancellate sculpture; 

 legs black, small joints of tarsi reddish, anterior tarsi slender ; 

 tegulas ferruginous ; wings hyaline, nervures and stigma 

 dark fuscous; second r.n. and third t.c. much weakened; 

 third s.m. short, combined areas of second and third not so 

 great as that of first ; abdomen broad, shining, caudal rims 

 dark ferruginous. Microscopic characters are as follows : 

 frontal punctures much smaller than eye-facets, as dense as 

 possible, running more or less into grooves ; mesothorax very 

 minutely granular, with widely scattered small punctures ; 

 area of metathorax finely irregularly reticulate ; spurs ferru- 

 ginous. 



Hab. Solomon Islands, July- August, 1909(W. W. Frog- 

 gatt). In Friese's table of New Guinea species, this runs to 

 H. latitarsis Friese, but that is easily distinguished by the 

 broadened anterior tarsi. H. froggatt'x is closely allied to H. 

 Uurti Ckll., from Queensland, and looks just the same super- 

 ficially, but the sculpture of the metathorax is quite different. 



Halictus viridiscitus n.sp. 

 5 Length about 8 mm., wings rather short; head and 

 thorax granular, olive-green, the mesothorax and scutellum 

 a stronger, bluer green ; head broad ; keel between antennae 

 prominent ; front dull and granular, but the dense punctures 

 much larger than the eye-facets ; clypeus with large shallow 

 punctures, black, the upper margin green, the border between 

 the green and the black rosy ; lower margin of clypeus with 

 orange hairs ; mandibles dark : cheeks in lateral view about 

 as broad as eye : antennae dark ; mesothorax and scutellum 

 very densely and finely punctured on a rugose ground ; area 

 of metathorax with very fine striae, crossed by little ridges, 



