_ the development and homologies 
of the carapace and plastron of the 
_ chelonian reptiles, 422. 
_ Palzopora, characters of the new ge- 
mus, 129. 
 Palmellez, new species of, 243. 
Parmelia erosa; observations on, 26. 
Patterson’s, R., First Steps to Zoo- 
_ logy, noticed, 396. 
Pease, W. H., on the geology and 
natural history of Mexico, 427. 
Pentremites, new species of, 249. 
Perischodomus, description of the new 
_ genus, 253. 
Peryphus, new British species of, 214. 
Petraia, new species of, 1. 
Phyllopora, characters of the new ge- 
nus, 389 
Piassaba, a fibrous matter from South 
America, notice of, 153. 
Pina cloth, on the preparation of pine- 
apple fibres in Singapore for the 
manufacture of, 314. 
Plants, British, notices respecting rare, 
62, 152, 241; on the existence of 
an ovum or ovule as well in the 
male as in the female of animals 
and, 154; on varieties of some, 
424, 
Platycrinus, new species of, 246. 
Plumbaginacee, on the British species 
of, 433. 
Podica, description of a new species 
of, 311. 
Podisoma fuscum, observations on the 
fructification of, 520. 
Saag characters of the genus, 
8. 
Polycotyledonous embryos, observa- 
tions on, 312. 
_ Post-office regulations, notice respect- 
_ ing, 237. 
_ Poteriocrinus, new species of, 245. 
_ Pouchet, M. F., on the development 
and organization of Infusoria, 233. 
_ Pselaphide and Scydmenide, re- 
marks on the British, 38. 
_ Pterogonium, new species of, 291. 
_ Pteromalus, new species of, 205. 
 Ralfs, J., on the mode of growth in 
on Same and allied genera, 39, 
_ Reeve, L., on some new species of 
_ _ Turbo, 227. 
_ Reid, Prof., on the Vogmarus Islan- 
_ dieus, 456. 
INDEX. 
527 
Reinhardt, J. T., on a bag-shaped 
glandular apparatus on a Brazilian 
bat, 386. 
Retzia, observations on the genus, 
181. 
Rivularia, observations on a species 
of, 21. 
Robin, Dr. Ch., on the existence of an 
ovum or ovule as well im the male 
as in the female of plants and ani- 
mals, 154. 
Roccella tinetoria and fuciformis, ob- 
servations on, 25. 
Rossia Oweni, Ball, notice respect- 
ing, 239. ; 
Rotifera, on the structure of the, 518. 
Royal Physical Society of Edinburgh, 
proceedings of the, 63. 
Royal Society, proceedings of the, 
422, 518. 
Salwey, Rev. T., on the cryptogamic 
flora of Guernsey, 22. 
Sanderson, J. S., on the irritability of 
the style of various species of Gold- 
fussia, 425. 
Saracha, observations on the genus, 
with descriptions of new species, 443. 
Sarcinula, new species of, 124. 
Sarcoptilus, description of the genus, 
Sargassum, new species of, 106, 216, 
254, 503. i 
Schaum, Dr. H., on the British Geo- 
dephaga, 32; on Pselaphide and 
Scydmenide, 38. 
Scrophulariacez, on some genera al- 
lied to, 162. 
Shells, new, 227. 
Siphonodendron, characters of the ge- 
nus, 127. 
Solanaceze, on several genera hitherto 
placed in, 162, 
Solitaire, historical evidences of the, 
138. 
Southbya, description of the new ge- 
nus, 501. 
Sponges, on the excavating powers of 
certain, 321. 
Spruce, Richard, on the Musci and 
Hepatice of the Pyrenees, 81, 269, 
358, 478. 
Statice, on the British species of, 438. 
Stratton, T., on the prevention of 
bugs, 78. 
Strephodes, characters of the new ge- 
nus, 4. 
