vi CONTENTS. 



XI. On a netc Structure in the Antennce of Insects. By J. B. Hicks, Esq., M.D., 

 F.L.S. page 1^7 



PART III.— 1858. 



XII. Observations on Entozoa, tcith notices of several neio sjoecies, including an account 



of two experiments in regard to the breeding of Taenia serrata and T. cucumerina. 

 By T. Spencer Cobbold, Esq., M.D., F.L.S. 155 



XIII. On the Arrangement of the Cutaneous Muscles of the Larva q/'Pygsera bucephala. 

 By John Lubbock, Esq., F.E.S., F.L.S. Sfc 173 



XIV. On the Agamic Reproduction a/)id Morphology of Aphis. — Part I. By Thomas 

 H. HuxiiEY, F.B.S., Frofessor of Natural History, Government School of Mines. 

 Commtmicated by G. Busk, Esq., F.B.S., F.L.S. 193 



XV. On the Agamic Reproduction and Morphology of Aphis. — Part II. By Thomas 



H. Huxley, F.R.S., Fi^ofessor of Natural History, Government School of Mines. 

 Communicated by G. Busk, Esq., F.R.S., F.L.S. 221 



XVI. On the external Anatomy and Natural History of the Genus of Annelida named 

 Palolo by the Samoans and Tonguese, and Mbalolo by the Fijians. By John 

 DesisMacdovau), Assistant-Surgeon of H.M.S. 'Herald,' employed on Survey- 

 ing Service in the South-western Pacific, under the command of Captain H. M. 

 Denham, R.N., F.R.S. Commtmicated by G. Busk, Esq., F.R.S., F.L.S. . 237 



XVII. On the probable Metamorphosis of Pedicularia and other forms ; affording pre- 

 sumptive evidence that the Pelagic Gasteropoda, so called, are not adult forms, 

 but, as it icere, the Larvce of icell-knoivn genera, and perhaps confined to species 

 living in deep loater. By John Denis Macdonald, Assistant-Surgeon of H.M.S. 

 ' Herald,' employed on Stirveying Service in the South-western Pacific, under the 

 command of Captain H. M. Denham, R.N., F.R.S. Communicated by G. Busk, 

 Esq., F.R.S., F.L.S 211 



XVIII. On the Anatomy of Eurybia Gaudichaudi, as bearing upon its Position amongst 

 the Pteropoda. By John Denis Macdonald, Assistant-Surgeon of H.M.S. 

 ' Herald,' employed on Surveying Service in the South-toestern Pacific, under the 

 command of Captain H. M. Denham, R.N., F.R.S. Communicated by G. Busk, 

 Esq., F.R.S., F.L.S. 246 



XIX. Notes on Phoronis hippocrepia. By F. D. Dtster, Esq., F.L.S. .... 251 



XX. Synopsis of the Fructification of the Compound Sphserise of the Hookerian Herba- 



rium. By Pbedebick Currey, Esq., M.A., F.R.S., F.L.S. 257 



