22 Journal New York Entomological Society. [Voi. xii. 



Family LXXXVIII. PERRYIID^. 

 Some representatives should be found. 



Family LXXXIX. PTERYGOPHORIDyE. 

 Well represented in Australia and some forms should occur in the 

 Philippines. 



Family XC. SELANDRIID^. 

 183. Senoclia alboccBrulea Bingh. Luzon. 

 This family should have many representatives. 



Family XCII. DINEURID^. 

 Probably not found in the Archipelago. 



Family XCIII. TENTHREDINID^. 

 Fr. Castro de Elera, in his " Catalogo de toda la Fauna Filipinas " 

 includes Tenthredo variabilis KL, T. fieglecta KL, and Doleriis fiiger 

 KL, but gives no definite records. 



Family XCIV. CIMBICID^. 

 I see no reason why this family should not be represented in the 

 islands. 



O 

 NOTES ON OSMIINiE WITH DESCRIPTIONS OF 

 NE^A^ GENERA AND SPECIES. 



By E. S. G. Titus, 

 Washington, D. C. 



Genus ROBERTSONELLA Titus, 1904. 



Robertsonella, new genus. 



Slender, black, somewhat resembling Chelostovia (?) campanularum Kirby; 

 clypeus truncate, broad in female, mandibles tridentate in females, sharply bidentate 

 in male, malar space absent ; antennae normal in both sexes ; labial palpi four-jointed, 

 first joint not quite one half as long as second, third and fourth short, lateral, third 

 slightly the broader and longer ; maxillary palpi foitr-Joinfed, first and second equal 

 and longest, fourth shorter, third nearly equal to fourth and over two thirds as long 

 as first, fourth joint distinctly tapering to a rounded point; median nervure intersti- 

 tial or at most received very slightly before origin of basal nervure, first submarginal 

 cell longer than second, second narrowed one half above ; claws cleft in male, sim- 

 ple in female ; first dorsal abdominal segment rounded, with a narrow sulcus, male 



