CONTENTS. Vil 
Page 
XXXIX. Notule Lichenologice. No. V. By the Rev. W. A. 
Letenton, B.A., F.L.S.—Dr. W. Nylander on New British Lichens. 348 
XL. On the Morphological Structure and the Motory Phenomena 
of the Contractile Substance of the Polythalamia (Gromia oviformis). 
Big Eaten CORED saiavis S cacnsasels ceed derseineseitleidnisisulaaslen'e Cu eanioueioat sine nee 351 
XLI. On a new Species of Astacus. By Dr. E. von Martens... 359 
XLII. On the various Modes of Coloration of Feathers. By M. 
Mine mae Ap irl savenni2s <asiads ded Stteeeidan va Sai dcliatnlccnds tossccnetonsedaactens 361 
XLIII. Contributions to an Insect Fauna of the Amazons Valley. 
Co.ErorreRA Lonaicornes. By H. W. Barns, Esq. ..........000- 367 
New Book ;—Our Reptiles: a plain and easy Account of the Lizards, 
Snakes, Newts, Toads, Frogs, and Tortoises indigenous to Great 
Erigariy by Mey Cx COOKE fst. :: aoesececncucaescmannee dare earencecmebans 373 
Proceedings of the Royal Institution :— 
Sir Jonn Lussock on the Metamorphoses of Insects............ 375 
On the Parturition of the Marsupials, by Professor R. Owen ; New 
Fluid for preserving Natural-History Specimens, by A. E. Verrill; 
On the Urticating Capsules of some Polypes and Acalephs, by 
Karl Mobius; On the Swimming-Bladder and Sexual Organs of 
the Murenoid Fishes, by Prof. Kner; Annelida and Turbellaria 
of Guernsey, by E. Ray Lankester; On the “Capture of a 
Ribbonfish,”” by John Hogg, F.L.S.; Notes on the Dactylethre, 
by J. P. Mansell Veale ; On the Occurrence of Bones of Marmots 
near Graz, by Professor Oscar Schmidt ; Researches upon Hy- 
drobiine and allied Forms, by Dr. William Stimpson; The Pla- 
centoid, a new Organ of Anthers, by M. Chatin ; On the Method 
of Flight of the Flyingfish, by Horace Mann; On some Marsu- 
pial Fishes, by L. Agassiz; On the Occurrence of an Internal 
Convoluted Plate within the Body of certain Species of Crinoidea, 
by James Hall; On the Fossil British Oxen—Part I. Bos Urus, 
Cesar, by W. Boyd Dawkins, Esq., M.A., F.G.S.; Note on the 
Presence of Teeth on the Maxille of Spiders, by Miss Staveley 
382—399 
NUMBER CII. 
XLIV. On the Anatomy and Physiology of the Vorticellidan Para- 
site (Trichodina pediculus, Ehr.) of Hydra. By Prof. H. JamzEs- 
CruAne, A: Ba BS. (Plates! VIID./S& 1X.) 0.0: See cecianh ere soe 401 
XLV. Contributions to an Insect Fauna of the Amazons Valley. 
CoLropTERA : Loncicornes. By H. W. Bares, Esq. ...........« 425 
a 
gia yees 2s 
