464 
Sacculinidia, new species of, 234. 
Salamandra, on two new species of, 
297. 
Salticus, new species of, 403. 
Salvin, O., on new species of diurnal 
Lepidoptera, 141. 
Sarcoptidze, on the avicolar, 78. 
Sars, G.O., on the development of 
marine Fishes, 389. 
Schimper, M., on the Calamites and 
fossil Equiseta, 235. 
Sclerochilus, new species of, 224. 
Seaweed, on a, new to the British 
flora, 401. 
Semper, Dr. C., on Euplectella as- 
pergillum and its inhabitants, 26; 
on a new Class of Echinodermata, 
316; on anew genus of Comatul 
dz, 862 ; on Hyalonema Schultzei 
and on Eurete, 372. 
Semperella, characters of the genus, 
376. 
Sichel, M., on the fixation of the 
limits between species and varie- 
ties, 171. 
Siebold, Prof. von, on the law of 
development of the sexes in in- 
sects, 205. 
Solitaire, on the osteology of the, 
159. 
Species, on the fixation of the limits 
between varieties and, 171. 
Spiders, descriptions of new, 403, 
Spirifer cuspidatus, monograph of, 
1, 188, 295. 
Sponge, on a remarkable, from the 
North Sea, 81. 
Sponges, on the contractile tissue of, 
Steindachner, Dr., on a remarkable 
form of Pleuronectidie, 80. 
Tessarops, description of the new 
genus, 412, 
INDEX. 
Tetilla euplocamos, note on, 319. 
Tetralobus, new species of, 99, 
Thomisus, new species of, 405. 
Thomson, Prof. W., on Hyalonema, 
320. 
Thorell, T., on the Aranea lobata of 
Pallas, 186. 
Thylacinus, new species of, 296. 
Tinnunculus cenchris, note on the 
occurrence of, 75. 
Tricuspidariezs, observations on the, 
39, 49. 
Tristram, Rey. H. B., on the geo- 
graphical and geological relations 
of the fauna and flora of Palestine, 
63. 
Typton, on the British species of, 
119, 176. 
Vaillant, L., on the anatomy of Pon- 
tobdella verrucata, 170. 
Vallea, on the species of, 47. 
Varicellaria, on the germination of 
the spores of, 446. 
Volutes, on the habits of the, 454, 
Volutide, on the Japanese species 
of, 367. 
Walker, J. F., on the occurrence of 
the genus Anser in the peat-de- 
posits of Cambridgeshire, 388. 
Wallich, Dr. G. C., on Coccoliths 
and Coccospheres, 317. 
Wedl, C., on capillary vascular sys- 
tems in the Gasteropoda, 459. 
Whales, on the pelvis and hind limbs 
of, 79. 
Wood, Dr. H. C., on some Algw from 
a Californian hot spring, 231. 
Wright, Dr.E.P.,'on Hyalonema, 320 ; 
on Lodoicea sechellarum, 340; on 
deep-sea dredging, 423; on the 
Bats of the Seychelles, 436; on 
the transportation of living fish, 
438. 
END OF THE SECOND VOLUME. 
PRINTED BY TAYLOR AND FRANCIS, 
RED LION COURT, FLEET STREET. 
