448 



INDEX. 



Robin, C, on the anatomical arrange- 

 ment of the lymphatics in the 

 Torpedos, 149. 



Rodentia, on the type of a new family 

 of, 436. 



Royal Society, proceedings of the, 

 59, 140, 219, 289, 369. 



Salticus, new species of, 388. 



Saporta, Count G. de, on the tempe- 

 rature of geological periods, from 

 indications derived from the ob- 

 servation of fossil plants, 263, 340. 



Sarcopetalum, on the genus, 90. 



Sarmydus, characters of the new ge- 

 nus, 410. 



Satyridse, new genera of, 124, 161. 



Schultze, Prof. M., on Hyalonema, 

 153. 



Sciadotenia, on the genus, 325. 



Sclater, Dr. P. L., on the Antiloca- 

 pridae, 58. 



Scy Ilium catulus, on the incubation 

 of the eggs of, 22/. 



Seeley, H., on the theory of the skull 

 and skeleton, 371. 



Sertularise, on the contractile sub- 

 stance and structure of the, 54 . 



Seynes, J. de, on some points in the 

 anatomy of Fistulina, 302. 



Silurian life, geographical distribu- 

 tion of, 301. 



Sipunculi, on the anatomy of the, 442. 



Skull, alledged discovery of an an- 

 cient human, in California, 70. 



Smee, A., on the *' Monde de la Mer," 

 60. 



Sparassus, new species of, 390. 



Spencer, H., on the theory of the 

 vertebrate skeleton, 436. 



Sphaerise, on the pecuharities of some 

 stylospores of, 356. 



Sphenura, new species of, 185. 



Spiders, on the falces and maxillae of, 

 258 ; new, 387. 



Spirifer cuspidatus, on the perforate 

 structure of the shell of, 29. 



Spirorbis spirillum, on the history of 

 the development of, 214. 



Sponges, on the animality of the 

 ciHate, 13 ; on the excavating, 229; 



on the animal or vegetable nature 

 of 419. 



Steindachner, Dr., on some new rep-" 

 tiles, 228 ; on some new fishes, 44 L 



SteUio caucasicus, on the structure 

 of the skin in, 145. 



Sychnosepalum, on the genus, 192. 



Talpa europaea, on the dentition of, 

 377. 



Taracta, description of the genus, 172. 



Telerpeton elginense, on a new spe- 

 cimen of, 226. 



Thephantes, characters of the new 

 genus, 318. 



Thorell, T., on Argulus dactylopteri, 

 45. 



Thoris, characters of the genus, 317. 



Thranodes, characters of the new ge- 

 nus, 315. 



Thuret, G., on the fecundation of the 

 Florideae, 35. 



Torpedos, on the anatomical arrange- 

 ment of the lymphatics in the, 149. 



Trichomycterus, new species of, 433. 



Triclisia, on the genus, 328. 



Tristichocalyx, on the genus, 87. 



Triton cristatus, on the regeneration 

 of lost parts in, 72. 



Vertebrate skeleton, on the theory of 

 the, 371, 436. 



Vine, on the flowering and fructifica- 

 tion of the, 220. 



Wilson, E., on a remarkable altera- 

 tion of appearance and structure of 

 the human hair, 369. 



Woodward, H., on some points in the 

 structure of the Xiphosura, 144. 



Xaurus, characters of the new genus, 

 410. 



Xenacanthus Dechenii, observations 

 on, 152. 



Xiphosura, on the structure of, 144. 



Zarax, characters of the new genus, 

 410. 



Ziphius Sowerbiensis, occurrence of, 

 on the coast of Kerry, 304. 



Zoodes, characters of the new genus, 

 319. 



Zorion, characters of the new genus, 

 310. 



END OF THE NINETEENTH VOLUME. 



PRINTED BY TAYLOR AND FRANCIS, 

 RED LION COURT, FLEET STREET. 



