CONTENTS OF VOL. XIX. 



[SECOND SERIES.] 



NUMBER CIX. 



Page 



I. Notes of an Excursion to the Pjrenees in search of Diatomacese. 

 By William Smith, F.L.S., Professor of Natural Historj, Queen's 

 College, Cork. (With two Plates.) ". 1 



II. On the Development of the Rool-cell and its Nucleus in Chara 

 verticillata (Roxb.). By H. J. Carter, Esq., Assistant Surgeon 

 H.C.S., Bombay. (With a Plate.) 13 



III. On two species of Echinodermata new to the Fauna of Great 

 Britain. By L. Barrett, F.G.S. (With a Plate.) 32 



IV. Notes on the Permian System of the Counties of Durham and 

 Northumberland. By Richard Howse, Esq. (With a Plate.) ... 33 



V. Notes on the genus Quenstedtia. By John Lycett, Esq. ... 53 



VI. On the Uses of the Sand-canal in the Starfishes. By Thomas 

 Williams, M.D., F.L.S., Physician to the Swansea Infirmary 55 



VII. Remarks on the Inferior Oolite and Lias in parts of North- 

 amptonshire, compared with the same Formations in Gloucestershire. 



By the Rev. P. B. Brodie, M.A., F.G.S 56 



VIII. Contributions to the knowledge of the Anatomy of Nautilus 

 Pompilius, L., especially with reference to the male animal. By J. 

 Van der Hoeven, M.D., &c.. Professor of Zoology in the Uni- 

 versity of Leyden. (With two Plates.) 58 



New Books : — Shells and their Inhabitants : The Genera of Recent 

 MoUusca; arranged according to their Organization, by Henry 

 and Arthur Adams. — Das Gebiss der Schnecken, zur Begriindung 

 einer natiirlichen Classification, untersucht von Dr. F. H. Tros- 

 chel. Professor an der Universitat zu Bonn. — Prodromus Sy- 

 stematis Naturalis Regni Vegetabilis ; Auctore Alphonso de 

 Candolle 74—85 



Proceedings of the Zoological Society 35 — 102 



