CONTENTS 



VIII 



PAGE 



REMARKS UPON APPENDICULARIA AND DOLIOLUM, TWO GENERA OF THE 



TUNICATA . . ... 69 



Philosophical Transactions of the Royal Society, 185:,//. ii. pp. 595-606. 



I.X 



ZOOLOGICAL NOTES AND OBSERVATIONS MADE ON BOARD H.M.S. " RATTLE- 

 SNAKE " DURING THE YEARS 1846-50 . . . . . . . 80 



Annals and Magazine of Nattiral Histoty, vol. vii. ser. ii. 1851, 

 //. 304-6; 370-4; '--'ol. I'iii. pp. 433-42. 



X 



OBSERVATIONS ON THE GENUS SAGITTA . . 96 



British Association Report, 1851, pt. ii. pp. 77-78. (Sectional T7'ansactions,] 



XI 



AN ACCOUNT OF RESEARCHES INTO THE ANATOMY OF THE HYDROSTATIC 



ACALEPH^ . ... 98 



British Association Report, fitly, 1851, //. ii. pp. 78-80. (Sectional 

 Transactions. ) 



XII 



DESCRIPTION OF A NEW FORM OF SPONGE-LIKE ANIMAL . 102 



British Association Report, Jnly, 18^1, pt. ii. p. 80. (Sectional Trans- 

 actions. ) 



XIII 



103 



REPORT UPON THE RESEARCHES OF PROF. MULLER INTO THE ANATOMY AND 

 DEVELOPMENT OF THE ECHINODERMS . . 



Annals and Magazine of Natural History, ser. ii. vol. viii. 185 1, //. 1-19. 



XI\' 



UEBER DIE SEXUALORGANE DER DIPHYDAE UND PHYSOPHORIDAE . 122 



Mullen's Archiv fiir Anatotnie, Physiologie, mid Wissenschaftliche 

 Medicin, 1851,//. 380-4. 



XX 



LACINULARIA SOCIALIS : A CONTRIBUTION TO THE AN.ATOMY AND PHY- 

 SIOLOGY OF THE ROTIFERA , . jjg. 



Transactions of the Microscopical Society 0/ London, new ser. vol. i. 1853, 

 //. 1-19. (Read December Tyi, 1851.) 



XVI 



UPON ANIMAL INDIVIDUALITY . 



Proceedings of the Royal Institution, vol. i. 1851-4,^^. 184-9. (Abstract 

 of a Friday Evening Discourse delivered on April 30, 1852. ) 



146 



