456 



INDEX. 



Scapia Falconeri, observations on, 

 445. 



Schneider, Prof. A., on the structure 



of the Actinise and Corals, 437; 



on the development of Echino- 



rhjTichus gigas, 441. 

 Sclater, Dr., on Testudo chilensis, 



161, 

 Seelev, H. G., on the structure of the 



head in the Ornithosauria, 20, 266, 



388. 

 Semiathe, description of the genus, 



262. 

 Shells, on the tertiary, of the Ama- 

 zons valley, 59, 101. 

 Siredon, on the metamoi-phoses of, 



246. 

 Sphadasmus, ne-w species of, 203. 

 Sponges, on three Pachytragous, 



from the south coast of Devon, 1 ; 



descriptions of new, 268, 302. 

 Sponge-spicules of the greensand 



compared "n-ith those of existing 



species, on, 112. 

 Spongiadge, confirmation of the dis- 



coA'ery of the animal of, 445. 

 Stelletta, new species of, 7. 

 Stenotenia, description of the new 



genus, 392. 

 Surirella gemma, on the structure 



of, 423. 

 Swinhoe, R., on four new species of 



birds, 257. 

 Talantliia, new species of, 207. 

 Telaugia, description of the genus, 



260. 



Terebra, new species of, 355. 



Testudo chilensis, obsersations on, 

 15,101. 



Phayrei, observations on, 445. 



Thalassarachna, new species of, 238. 



Thyestetha, characters of the genus, 

 260. 



Trinchese, Prof. S., on a new genus 

 of Eolididaj, 391. 



Tubifex, on the British species of, 91. 



Tui'dinus, new species of, 241. 



Urnatella, observations on the ge- 

 nus, 309. 



Veltmann, W., on the descendence- 

 theor\^, 417. 



"Walden, Viscount, on three new 

 species of Asiatic Birds, 241. 



Whale, on a new Australian Ziphioid, 

 368. 



Williamson, Prof. W. C, on the or- 

 ganization of the Calamites, 299. 



Wood, S. v., on the assumption of 

 the adult form by the genera Cy- 

 praea and Ringicula, and by cer- 

 tain species of Astarte, 171. 



W^oodward, II., on the tertiary shells 

 of the Amazons valley, 59, 101. 



Woodward, J. J., on Amphipleura 

 pellucida and Surirella gemma as 

 test-objects, 423. 



Xychusa, description of the genus, 

 263. 



Zeuglodontidse, on a new type of, 51. 



Zoology, notes on arctic, 64. 



Zygopina3 from the Eastern Archi- 

 pelago, on the, 198, 268. 



END OF THE SEVENTH VOLUME. 



PRINTED BY TAYLOk AND FRANCIS, 

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