No. 2313. jfEW SPECIES OF EOCENE INSECTS— COCKERELL. 257 



Lema vetusta Heer, fossil in the Miocene of Oeningen, is said by 

 Heer to be allied to L. merdigera. The latter species belongs to 

 Crioceris, so the fossil must be called Crioceris vetusta. The elytra, 

 as shown in the figure, have neither bands nor spots. 



HYMENOPTERA. 

 Family ICHNEUMONIDAE. 



PHYGADEUON (sens, lat.) PETRIFACTELLUS, new species. 



Plate 36, fig. 4. 



Head and thorax black, their combined length 2 mm.; metathorax 

 gibbous in profile (much more so than in the recent members of the 

 same tribe with which I have been able to compare it); abdomen 

 petiolate, the petiole (two segments) short, hardly 1 mm. long, black; 

 beyond this the abdomen is ovate, about 1.5 mm. long, apparently 

 ferruginous in life, blackened 

 just beyond the petiole (base 

 of third segment); ovipositor 

 very distinctly exserted, but 

 short, about .05 mm. Wings 

 broad and ample, faintly 

 dusky, stigma and nervures \ 

 ferruginous; aerolet pen tag- ^'°- 9— phygadeuon petrifactellus. abdomen 



11 J .. AND WING. 



onal, closed; venation as 



shown in the figure. End of stigma to end of marginal cell 800/z; 



lower side of third discoidal cell, 720//. 



Type.— U.S.G.S. 1115 and (reverse) 1117. White River, Colorado. 

 Scudder collection. 



Tlolotype.—Csit. No. 66580, U.S.N.M. 



It is impossible to refer this to any of the restricted modern genera, 

 but there are apparently no grounds for the recognition of a new 

 genus. It seems to belong to the Phygadeuonini, but the brevity of 

 the ovipositor is suggestive of Stilpnini. 



EOPIMPLA, new genus. 



A genus of Pimpline Ichneumonidae, characterized by the rela- 

 tively large size (the largest of the known Eocene forms), with 

 broadly petiolate abdomen and normal terebra; the venation normal 

 in most respects, apparently without an areolet, the stigma large; the 

 basal nervure bent or angled near upper end, its lower end practically 

 meetmg the transverso-medial ; the first Irachial cell much produced 

 apicaUy, its apical side extremely oblique, emitting the suhdiscoideus 

 almost at the lower (apical) corner. The hind wing is imperfectly pre- 

 served, but it can be seen that the upper apical angle of the mediellan 

 144382— 20— Proc.N.M. vol.57 17 



