viii CONTENTS. 



Page 

 Note on the Embryogeny of the Tiinicata of the group Lucixe, by 

 M. A. Giard ; Ou Hackel's Theory ( Alice ogene sis) of the Genetic 

 Connexion between the GeryonidcB and ^ginidce, by Alexander 

 Agassiz ; On the Embryogeny of the Ephemerce, especially that 

 of Palingenia 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-gro-a^ existing in the River Fitzroy, 

 South Austi-alia, by M. Paul Gervais 479 — 486 



Index 487 



PLATES IN VOL. XVII. 



I r \ TT? T 1 



■ \ New Species of Terebratulina, Waldheimia, and Terebratella. 



III. New-Zealand Hydi'oida. 



IV I 



' > New Species of Sessile-eyed Crustaceans. 



VII. J>Palfeozoic Corals. 

 VIII. J 

 IX.. 

 X. )-New British Fungi. 

 XL J 



XII. Palaeozoic Corals. 

 Xm. New Species of Polytrema. 

 XIV. I 



XV ' 



■ '■Palaeozoic Corals. 



XVL [' 



XVII. J 



■ > Amphipodous Crustaceans. 

 XiX. 1 



XX. Chi-ysochloris Trevelyani. — Mode of Propagation of Tree- 



XXI. 1 Frogs. 



XXII. I 



XXIII. ^Palfeozoic Corals. 



xxiv. 



XXV. 



