448 



INDEX. 



Trochilidae, drafts for a new arrangement 



of the, 283. 

 Turner, H. N. f on the distinction between 



the cervical and dorsal vertebrae in 



Mammalia, 429. 

 Tyche, new species of, 206. 

 Utica, characters of the new genus, 206. 

 Valdivia, characters of the new genus, 206. 

 Ventriculidae of the chalk, on the, 74, 176. 

 Venus, new species of, 305. 

 Vertebraria, observations on the genus, 



145. 

 Walker, on some undescribed Chalcidites 



collected in North America, 19 ; on 



the hop-fly, 209. 

 Westwood, J. O., on the rose caddice 



saw-fly, 437. 



Whales, observations on the species of> 



277, 436. 

 White, A., on some new Crustacea, 61, 



205 ; on some Cetoniadse, 264, 341 ; 



on Petasida ephippigera, a grasshopper 



found in Australia, 409. 

 Wilson, W., on two new mosses from 



Jamaica, 378. 

 Xylophaga dorsalis, observations on, 159. 

 Yarrell, W., on the eggs of some of the 



birds of Chili, 56. 

 Zoological Society, proceedings of the, 55, 



131, 192,277,349,424. 

 Zoophytes, fossil, descriptions of new, 



226 ; on the geographical distribution 



and classification of, 98. 



END OF THE TWENTIETH VOLUME. 



PRINTED BY RICHARD AND JOHN E. TAYLOR, 

 RED LION COURT, FLEET STREET. 



