IV 



Osten Sacken, Baron R. Page. 



Two new North American Cecidomyise, ..''■. 219 



Packard, A. S., Jr., M. D. 



Revision of the Fossorial Hymenoptera of North America. 



I. Crabronidse and Nyssonidae, .... 39, 353 



On certain Entomological Speculations. A Review, . 209 



Reakirt, Tryon. 



Coloradian Butterflies, 122 



Walsh, Benj. D., M. A. 



Prof. Dana and his Entomological Speculations, . . 116 



On the Insects Coleopterous, Hymenopterous and Dipte- 

 rous, inhabiting the Galls of certain species of Willow. 

 Part second and last, ....... 223 



