hidex to Vol. IV. 



529 



Page 



Dentalium crassum 194 



decussatum ? 184 



deforme 179 



Dentalis 183 



Dufresnii 187 



duplex 188 



eburneum .. 191,197,198 

 elephantinum .... 180, 196 



Entails 186, 197 



fasciatvim .... 184 — ? 185 

 Fissura .... 192— syn. 190 



fossile 183 



Gadiis 193 



grande 189 



incertum 188 



incrassatum 194 



interruptum? 184 



inversum 193 



lactenm 187 



Lessoni 184 



minutum? 193 



■multistriatum 185 



nehulosum 192 



nigrum 179 



nitens? 188 



novem-costatum 184 



octogonum 181, 197 



opacum.....t _. 198 



pellucidum 1 79 



politum 187, 197 



pseudo-entalis 186 



pseudo-sexagonum .... 185 



Radicula 179 



rectum 180 



rubescens 188 



sectum 191 



semipolitum 369 



semi-striatum 190 



sexangulare 180,196 



strangulatum 193 



striatum w. . . 189 



sub-striatum 190 



subulatum 194 



sulcatum 183 



Tarentinum 186, 197 



translucidum .... 187, 198 



variabile 182, 197 



Deshayes, M. G. p. Abstract of 

 his Anatomy and Monograph of 



the genus Dentalium 175 



Observations on the above ; by 



Mr. G. B, Sowerby 195 



Dichotomous classification consi- 

 dered 43 



Dictyonota, a new genus of Cimi- 

 cidae 495 



Page 



Diomedea exulans 105 



Dipus maximus 133 



Distoma duplicatvim 258 



DoTas costata 242 



Doris, Notice of Professor Rapp's 



paper on 256 



Doris tuberculata 416 



Douglas, Mr. D. Observations 

 on the Vultur Californianus of 



Shaw 328 



Observations on two un- 

 described species of Nortli Ame- 

 rican Mammalia 330 



Analysis of his Observa- 

 tions on some species of Tetrao 

 and Ortyx 189 



Ectosperma clavata, animality of 



its sporae ■ - 262 



Eels, fresh-water, two species of, 

 confounded by British writers 469 



Elater noctilucus 273 



puuncto-Uneatus 524 



Etnarginula crenulata 370 



Emberiza cassia 391 



Jlavigaster 392 



striolata 391 



Encrinus, a recent species of, de- 

 scribed 173 



Eulophus, history of its nomen- 

 clature 6 



Fauna, British, Contributions to, 



by Dr. Johnston 52, 416 



Fishes new to 465 



Felis Chaus 387 



maculata 381 



maniculafa 386 



Nepdlensis , 382 



Pardalis, Notes of a dissec- 

 tion of, 316 



rufa 382 



Fennec 387 



Fishes contained in the collection 

 of the Zoological Society, obser- 

 vations on, by Mr. Bennett. . . . 31 



English, Mr. Yarrell's Re- 

 marks on some 465, 507 



from Demerara, Dr. Han- 

 cock's Notes on 240 



travelling on land 242 — 

 tending their young, 245, 309 

 — making nests, 245 — salt-wa- 

 ter naturalized in fresh ...... 32^ 



Fissvrella hians 370- 



