22, 6 Rohwer: New Malayan Wasps 595 



of propodeum coarsely reticulate, the channel deep and foveolate ; 

 mesepisternum polished, the suture foveolate; sides of propodeum 

 coarsely reticulate; petiole cylindrical, strongly curved basally 

 not sharply separated from rest of tergite; gaster polished'; 

 pygidium not defined, pygidial area finely granular; first recur- 

 rent received very close to end of first cubital cell; second 

 recurrent sinuate, received by third cubital a distance about 

 equal to one-third the length of second intercubitus from base 

 of cell; second cubital cell about twice as long on cubitus as on 

 radius. Black; mandibles, scape, tubercules, legs, and base of 

 petiole yellowish; tegulae and flagellum (except above) testa- 

 ceous; central area of first tergite black; apex of first tergite 

 and all of following segments rufous; head and thorax with 

 dense silvery hair; wings hyaline, venation testaceous. 



Type locality.— Dapitan, Mindanao. 



Described from one female received from C. F. Baker. 



Type.-— Catalogue No. 25038, United States National Museum. 



Rohwer. 



A female from Sandakan, Borneo, agrees with the type and 

 is returned to the sender, C. F. Baker. A male collected at 

 Singapore certainly belongs to this species and agrees well with 

 the description of the female. 

 Diodontus antennatus sp. nov. 



Male.— Length, 7 millimeters. Anterior margin of clypeus 

 bidentate medianly; face finely coriaceous; transverse carina 

 incomplete and where it joins frontal carina arched dorsally; 

 eyes closest together opposite antennae; frons shining, with 

 well-separated, distinct punctures; vertex with the punctures 

 more widely separated; area around ocelli not depressed; ocelli 

 m a low triangle; postocellar line as long as ocellocular; antennas 

 long, moniliform, third joint longer than fourth ; anterior margin 

 of pronotum sharply carinate and slightly dentate laterally; 

 scutum shining, very sparsely punctured; notauli indicated 

 anteriorly; suture in front of scutellum foveolate; scutellum 

 shining; metanotum hairy; dorsal area of propodeum polished, 

 depressed medianly, the depression connecting anteriorly with 

 the linear foveolate inclosure and posteriorly with the deep 

 channel; posterior face of propodeum coarsely reticulate; mes- 

 episternum shining, with scattered setigerous punctures, the 

 suture foveolate; sides of propodeum shining; petiole cylindrical, 

 strongly curved, subequal in length with hind femur, distinctly 

 separated from rest of tergite ; gaster polished ; first recurrent 



