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bulletin: museum of comparative zoology. 



Type. — H. semirutus, sp. nov. 



The type species is evidently a true eampoplegine, but I cannot 

 reconcile its peculiar habitus with any recent genus, and I believe it 

 worthy of generic rank. 



Hiatensor semirutus, sp. nov. (Figs. 54, 55.) 



Female? Length about 9 mm. Apparently brown, with the apical portion 

 of the hind femora and the apical part of the abdomen darker. Head not 

 preserved. Mesothorax smooth; metathorax regularly coarsely rugulose. 

 Abdominal petiole as long as the slope of the metathorax, swollen only slightly 

 at the tip, the second segment about a quarter longer and but little thicker 

 at apex than at base; remaining segments forming an ovate body. The tip 



Fig. 55. 



Fig. 54. 



Fig. 54. — Hiatensor semirutus, gen. et sp. nov. Profile of type; Fig. 55. — Wing. 



of the abdomen is pointed and I believe the specimen is a female, although no 

 ovipositor can be distinctly seen. Wings hyaline, stigma piceous; veins 

 reddish fuscous; marginal cell long and pointed; both sections of the radius 

 straight; discocubital cell twice as long as high, its limiting nervures nearly 

 straight, except the basal vein which is slightly curved. 



Described from one specimen well preserved, except the head which 

 is chipped off from the stone. 



Type.— No. 2260, M. C. Z, Florissant, Col. (No. 8396, S. H. 

 Scudder Coll.). 



