512 



I N D E X. 



Walker, F., on some undescribed 

 Ceylon insects, 304. 



Wallich, Dr., on the distribution and 

 habits of the pelagic .and freshwater 

 free-floating Diatomacese, 1 ; on 

 the markings of the Diatomacea? 

 in use as test-objects, 122; on 

 Desmidiacea; from Lower Bengal, 

 184, 273. 



Westwood, J. O., on Darwin's theory 

 of development, 347- 



Wollaston, T. V., on the Aphanar- 

 thra of the Canary Islands, 163; 



on new Madeiran Coleoptera, 217, 

 252, 358, 448. 



Woodward, S. P., on some new fresh- 

 water shells, 337. 



Xenocerus, new species of, 35. 



Zargus, new species of, 217. 



Zeidora, characters of the new genus, 

 301. 



Zoological Society, proceedings of 

 the, 48, 143, 329, 422, 493. 



Zoophyte, description of a new Bri- 

 tish, 73. 



END OF THE FIFTH VOLUME. 



PRINTED BY TAYLOR AND FRANCIS, 

 RED LION COURT, FLEET STREET. 



A I. K R E l\ P L A M W A M . 



