454 



Uhler, P. R. List of the Heteropter^ 

 ous Hemiptera in the Harris collec- 

 tion, 365. 

 Una, 158. 



carbo, 159. 



coluraba, 159. 



grylle, 158. 

 Ursus americanus, 97. 



cinnamoneus, 97. 



horribilis, 97. 



Valleys, formation of, 330. 



Vernation of the lilac and wild cherrv, 



215. 

 Vireosylvia flavifrons, 212. 

 gilvus, 304. 

 olivacea, 247. 

 philadelphicns, 304. 

 Swainsoni, 115. 

 Vulpes argeutatus, 96. 

 fulvus, 96. 

 velox, 96. 



Wadsworth, M. Edward. Notes on 

 the mineralogy and petrography of 

 Boston and vicinity 217 ; on the 

 granite of North Jay, Maine, 237; 

 fusibility of the amorphous varie- 

 ties of quartz, 238; on the so-called 

 tremolite of Newbury, Mass., 251; 



petrography of Quincy and Rock- 

 port, 309. 



Walker Prize for 1877, award of, 257. 



Wasp, nests of mud, 150. 



Weyenbergh, Prof. H. Two new 

 species of Pacliylasfrom the Argen- 

 tine Republic, 316. 



White ants, habits of in Jamaica, 267. 



White Mountains, insects of, 250. 



Wilder, Prof. B. G. Respiration in 

 the Mud Fish, 337 ; new apparatus 

 for showing action of the dia- 

 phragm in respiration, 337. 



Wixslow, C. F. On the occurrence 

 of Alasmodonta in Warm Spring 

 Lake, 1. 



Worms, relationships of the, 1. 



classification of lower, 17. 



Wright, Rev. Geo. F. Some remark- 

 able gravel ridges in the Merri- 

 mack Valley, 47. 



Xanthocephalus ecrerocephalus, 122 

 Xiphidium ensiferum, 83. 



Zaitha fluminea, 441. 

 Zeluslongipes,427. 

 Zenaidura carolinensis, 137. 

 Zonotricha Gambeli, 118, 



