252 Annals Entomological Society of America [Vol.11, 



The insect resembles E. cethiops in the distance of the transverso- 

 medial from the basal, the basal without a bend, and the first trans- 

 verso-cubital so placed that if prolonged it would form a very acute 

 angle with the costa. It resembles E. varipes in the long (longer than 

 in varipes) and very oblique marginal cross-nervure, joining the third 

 submarginal cell near its end. In the bend of the nervure bounding 

 the lanceolate cell below, it is intermediate between csthiops and 

 varipes. In the long pointed marginal cell it is nearest to varipes, but 

 in the comparatively sHght divergence of the two sides of the first 

 discoidal it resembles cethiops. It is the first of its genus to be found 

 fossil. 



Habitat. — Miocene shales of Florissant, Colorado {Willard 



Rusk, 1909). This has the costal cross-nervure, and is an 



Eriocampoides as defined by Macgillivray. 



At Station 13 B, Mr. Duce found a very beautiful specimen of 



Megaxyela petrefacta Brues. 



Odynerus terryi sp. nov. (Eumenidas.) 



Length probably about 18 mm., but only the basal part of the 

 abdomen is preserved; head and thorax black, densely punctured; 

 head about 4 mm. long and 3| mm. broad. The structural details 

 cannot be made out, except that the ocelli are large (255 /( diam.), 

 the scape is slender, and the mandibles are sharply dentate; the an- 

 tennal sockets are about 544 /jt apart; thorax about 6 mm. long and 

 5 wide, the large prothoracic lobes as usual in the genus; posterior 

 lobes of the metathorax, on each side of the base of the abdomen, very 

 large and conspicuous, being about 850 /i long and 765 wide, densely 

 punctured; fii^st abdominal segment broad and short, formed and 

 colored, so far as can be seen, precisely as in 0. diffinis Sauss. (Bing- 

 ham, Hymenop. British India, I, f. 106) except that it is shorter, and 

 therefore broader in proportion to its length, — it may, however, be 

 shaped precisely as in difflnis, if the clear band, which seems to bound 

 the segment, really traverses its disc, the whole of the structure, 

 which looks like two segments, being really only one. (After repeated 

 examination, I feel convinced that the latter explanation is correct.) 



Anterior wings about 122 nim. long, folded as usual in the group, 

 dark fuliginous; stigma reddish, nervures piceous. Venation normal 

 for Odynerus; marginal cell at end very obliquely truncate, ending in 

 a point away from costa; basal nervure with its upper end remote 

 (about 850 /«) from stigma; cubital nervure not bent at end of first 

 discoidal cell; third transverso-cubital nervure arched inwards; both 

 recurrent nervures joining second submarginal cell, the first about 425 /x 

 from its base, the second about 289 from apex, the distance between 

 them aV)out 544. The second submarginal is greatly narrowed above 

 its width on marginal being only about 170 ,«. Depth of marginal 

 cell 986 /,«. 



Hind wings palUd, with the anal and transverso-medial (or trans- 

 verse anal) nervures scarcely forming any angle or bend at their junc- 



