40 PROCEEDINGS OF THE NATIONAI^ MUSEUM. vol.63. 



shagreened above, strongly longitudinally striate on <sides; notauli 

 complete, coming together in a rather broad lobe which almost touches 

 the scutellum; mesonotum shagreened as in laevicollis; scutellum 

 indistinctly transverse, convex, shagreened, margined laterally, not 

 hairy; metapleurae, propodeum, first tergite (except in central area 

 which is polished) and bases of foveae on second tergite, covered with 

 short white hair; first tergite twice as wide as long, the dorso-lateral 

 carinae distinct but not prominent, the median area about as wide as 

 long; abdomen about as long as the thorax, shaped as in laevicollis; 

 second tergite a little longer than wide at the apex; basal foveae dis- 

 tinct, the striae upon their inner slopes few, extending to the basal third 

 of the segment; third tergite less than twice as long as the fourth, many 

 times wider than long; segments after the second united about one- 

 third as long as the second. Wings whitish, colored as in some Micro- 

 gasterines, projecting the length of the first tergite past the apex of 

 the abdomen, the pubescence sparse and short. Black; legs more or 

 less rufous, the coxae and most of femora and tibiae darker; mandi- 

 bles rufous; antennae brown. 



Type locality. — Jacksonville, Florida. 



Type.— Cat. No. 24599, U.S.N.M. 



Redesoribed from the type specimen in the United States National 

 Museum. The antennae, except the last two joints, have been lost. 

 The lines quoted above were taken from the original description. 



11. PLATYGASTER CANADENSIS (Ashmead). 



Ectadius canadensis Ashmead, Can. Ent., vol. 20, 1887, p. 50. 

 Polymecus canadensis (Ashmead), Ashmead, Bull. 45, U. S. Nat. Mus., 1893, 

 p. 278. 



Female. — Length 3.10 mm. Head seen from above about twice 

 as wide as long, flattened posteriorly and feebly convex anteriorly, 

 the cheeks rather full; occiput and vertex traversed by rather 

 coarse, wavy striae; vertex rounded; ooellar space finely shagreened; 

 area around ocelli and above dorsal third of eyes finely shagreened; 

 rest of face (except just above antennal socket where there are a 

 few strong striae) covered with fine wavy aciculations: projection 

 between antennae about as wide as long, truncate apically, carinated 

 laterally; antennae stout, gradually incrassated toward tips: scape 

 about as long as the next five joints united, slightly swollen before 

 tne apex; pedicel twice as long as wide, narrowed proximally; third 

 joint about half as long as the second, narrower than the second, 

 a little longer than wide, very closely joined to the fourth which is 

 nearl}^ as long as and a little thicker than the pedicel; fifth and sixth 

 joints subequal in length and width to the fourth; seventh and 

 eighth joints a little longer than wide; ninth quadrate; last joint a 

 little less than twice as long as wide, rather blunt at tip: thorax one 



