IV CONTENTS. 



Page 

 of Brittany, by M. Valenciennes; New Species of Mammals and 

 Birds ; Description of a New Bird from Guatemala, forming the 

 type of a new genus, by John Gould, F.R.S. &c. ; The late 

 Mr. Newport; Meteorological Observations and Table 75 — 80 



NUMBER XCVIIi. 



VIII. Notes on the Palaeozoic Bivalved Entomostraca. No. III. 

 Some Species of Leperditia. By T. Rupert Jones, F.G.S. (With 

 two Plates.) 81 



IX. Further Observations on the Development of Gonidia (?) from 

 the Cell-contents of the CharacecB, and on the Circulation of the 

 Mucus-substance of the Cell. By H. J. Carter, Esq., Assistant 

 Surgeon H.C.S., Bombay. (With two Plates.) 101 



X. Amended Description of the Genus Scaphula, Benson, a fresh- 

 water form of the Arcacea ; with characters of a new species from 

 Tenasserim. By W. H. Benson, Esq 127 



XI. Description of Tany stoma tubiferum, a Burmese form related 



to the Genus Anostoma of Lamarck. By W. H. Benson, Esq. ... 129 



XII. On Pleurodictyum problematicum. By William King, Pro- 

 fessor of Mineralogy and Geology in Queen's College, Galway ; Corre- 

 sponding Member of the Natural History and Medical Society of 

 Dresden, &c. (With a Plate.) 131 



XIII. On the Mechanism of Aquatic Respiration and on the Struc- 

 ture of the Organs of Breathing in Invertebrate Animals. By Thomas 

 Williams, M.D. Lond. (With a Plate.) 142 



XIV. On the Marine Testacea of the Piedmontese Coast. By 



J. Gvstyn Jeffreys, Esq., F.R.S. (With a Plate.) 155 



XV. Notes on the Review of G. R. Gray's " Catalogue of the Genera 

 and Subgenera of Birds " in the December Number of the * Annals.' 



By G. R. Gray, F.L.S. &c 189 



New Books : — A Popular History of Palms and their Allies, by Berthold 

 Seemann, Ph.D. &c. — Museum of Economic Botany, or a Popular 

 Guide to the Museum of the Royal Gardens of Kew, by Sir W. 

 J. Hooker, Director. — A Handbook to the Marine Aquarium, by 

 P. H. Gosse. — Popular Geography of Plants, or a Botanical 

 Excursion round the World, by E. M. C. Edited by C. Daubeny, 

 M.D. &c. — The Flowering Plants and Ferns of Great Britain : an 

 attempt to classify them according to their Geognostic relations, 

 by J. G. Baker 194—195 



Proceedings of the Zoological Society ; Botanical Society of Edin- 

 burgh 200—206 



