BRUES: PARASITIC BYMENOPTERA. 



25 



are inserted much lower than is usual in Spilochalcis and its allies and 

 it is barely possible that this insect is really a member of the Chal- 

 citellini. 



Type — No. 2098, M. C. Z., Florissant, Col (No. 9136, S. II. 

 Scudder Coll.). 



EURYTOMIDAE. 



Decatoma has been recorded by Scudder ('78) from the Oligocene 

 of Green River, Wyoming, but otherwise I can find no palaeontological 

 reference to the group. The present collection contains two species 

 of Eurytoma. 



EURYTOMA SEPULTA, Sp. nOV. (Fig. 15.) 



Female. Length 4.5 mm. Black or very dark, including legs and antennae ; 

 wings hyaline. Antennae apparently 13-jointed, with one ring joint, the 

 last three joints forming a slight, but quite distinct club; funicle joints about 

 quadrate. Surface of head irregularly rugulose. Dorsum of thorax strongly 



Fig. 15.— Eurytoma sepulta, sp. nov. Type. 



transversely rugoso-punctate. Abdomen quite distinctly sessile, ovate in 

 lateral aspect, the last ventral segment acutely prolonged. Wings hyaline, 

 venation fuscous; marginal vein long, about two and one-half times the 

 length of the stigmal. Stigmal weakly divergent from the postmarginal, 

 strongly knobbed ; postmarginal much longer than the stigmal, stout. 



Described from three specimens, No. A9 (type), A 103 both from 



