March, 1904.] TiTUS : NOTES ON OSMIIN/E. 25 



Genus PROTERIADES Titus, 1904. 

 Proteriades, new genus. 



Type : Heriades seviiriibra Ckll. 1898. Trans. Amer. Entom. Soc. XXV, p. 



Mandibles bidentate, inner tooth the shorter, teeth of equal length ; labrum 

 elongate, polished, slightly convex, truncate at apex, sides parallel, ferruginous; 

 clypeus at apex with a narrow polished edge, faintly curved, slightly convex and 

 with a minute polished tooth in the center; scape of antenna slightly swollen and 

 deeply punctured; head shaped as in Ashnieadiella bucconis (Say), as broad as 

 thorax, "ocelli in a triangle "; "facial quadrangle much longer than broad, orbits 

 parallel " (Cockerell, /. r. ). Maxillary palpi short and sioui, four-joinled, first and 

 third joints equal, second one half longer than first, fourth more slender than others, 

 slightly shorter than third, first joint subglobose, third scarcely as wide as second ; 

 blade of maxilla rounded at apex, outer edge of blade with a 7-ow of long spines each 

 hooked at the tip. Labial palpi short, stout, covered with many short spines, second 

 joint one and a half times as long as first, third joint short, wide, longitudinally con- 

 cave, last joint slender, shorter than third and set deeply into the concavity of the third 

 joint. Marginal cell about as long as first discoidal, apex not attaining the margin, 

 stigma small, second submarginal shorter than first, strongly narrowed above, trans- 

 verse median nervure received before origin of basal nervure. Abdomen shaped as 

 in other Heriadini, sixth segment with a short tooth on each side, apical segment 

 deeply foveolate above, broadly truncate, with a central apical emargination, second 

 ventral segment with a small transverse swelling, ventral segments 3-5 apically 

 emarginate, the fifth quite deeply so and all faintly swollen transversely. Basal im- 

 pression of first dorsal segment not botnided by a carina, concavity shallo-w, broad, 

 impunctate. 



While some of the above characters may later prove to be simply 

 specific it is thought best to give them in detail now. 



When Professor Cockerell described this species he stated that it 

 was "by no means a typical Heriades, yet it is not an Ashmeadiella.''^ 

 The type specimens were from " Southern California, two sent by Mr. 

 Fox." I have before me one specimen taken in Los Angeles Co., 

 Calif., by Mr. D. W. Coquillett. Mr. Fox writes in answer to questions 

 of mine regarding the type at Philadelphia : " Second ventral segment 

 reddish, the third to fifth reddish-fuscous or almost entirely fuscous. 

 Second ventral segment and (especially third to fifth) with a transverse 

 fold or swelling which is emarginate or less prominent medially on 

 segments 3-5. Sixth dorsal dentate laterally. Seventh dorsal foveo- 

 late. Seventh at tip agreeing very well with your drawing." 



This species although at first sight superficially resembling Pseu- 

 dosmia andrenoides Spinola of Europe is not related to that species. 

 The latter being a true Osmiinae closely related to Nothosmia. I have 

 examined specimens determined by Dr. Schmiedeknecht. 



