Vlll CONTENTS, 



Page 



Nt)te on the Embryogeny of the Tunicata of the group Lucice, by 

 M. A. Giard ; On Hackel's Theory (Alloeogenesis) of the Genetic 

 Connexion between the Geryonidce and j^ginidtB, by Alexander 

 Agassiz ; On the Embryogeny of the Ephemerce, especially that 

 of PaUngema virgo, Oliv., by M. N. Joly ; Protection of Her- 

 baria and Entomological Collections from Insects by means of 

 Sulphide of Carbon, by M. J. B. Schnetzler ; Silica of Grasses 

 and other Plants carried up as Diatoms or other Siliceous Grains, 

 and not in Solution or as Soluble Silicates, by Prof. P. B.Wilson ; 

 On Fish of the Ceratodus-gi^ow^ existing in the River Fitzroy, 

 South Australia, by M. Paul Gervais 470 — 486 



Index 487 



PL.\TES IN VOL. XVII. 

 Plate I, 



: I I 



' ' \ New Species of Terebratuliaa, Waldheimia, and Terebratella, 



New-Zealand Ilydroida. 



New Species of Sessile-eyed Crustaceans. 



III. New-Zealand Ilydroida. 

 IV. 

 V. 



VI.^ 

 VII. [>Palfeozoic Corals. 



vni.J 



IX.. 



X. J- New British Fungi. 



XT. J 



XII. Palaeozoic Corals. 

 Xm. New Species of Polytrema. 

 XIV. 1 



XV ' 



!> Palaeozoic Corals. 

 XVI. \ 



XVII. J 



XVIII. 



XIX. 



XX. Chrysochloris Trevelyani. — Mode of Propagation of Tree- 

 XXI. 1 Frogs. 



XXII. I 

 XXIII. V Palaeozoic Corals. 



xxiv. I 



XX V.J 



Amphipodous Crustacean? 



