IV CONTENTS. 



Page 



Mounds of Omori. By Edwakd S. Mobse, &c. — An Intro- 

 duction to the Study of Fishes. By Albert C. L. G. 

 GtJNTHER 59 — 63 



On a new Species of Papilio from South India, with Remarks on the 

 Species allied thereto, by J. Wood-Masou ; On a highly organ- 

 ized Reptile from the Permian Formation, by M. A. Uaudry; 

 A new Genus of Rodents from Algeria; Researches ou the Com- 

 parative Anatomy of the Nervous System in the difl'erent Orders 

 of the Class of Insects, by M. E. Brandt ; Habits of a Fish of 

 the Family Sihiridce ( Callichthys fasciafus, Cuv.), by M. Car- 

 bonnier; On a new Form of Vesicular Worm with Exogenous 

 Budding, by M. A. Villot 64—75 



NUMBER XXXVin. 



IX. History and Classification of the known Species of Spoiigilla. 



By H. J. Carter, F.R.S. &c. (Plates V. & VI.) . . . , 77 



X. Spolia Atlantica: Contributions to the Knowledge of the 

 Changes of Form in Fishes during their Growth and Development, 

 especially in the Pelagic Fishes of the Atlantic. By Dr. C. F. 

 LiJTKEN 107 



XI. Notices of British Fungi. By the Rev. M. J. Berkeley, 

 F.R.S., and C. E. Broome, Esq., F.L.S. (Plate III.) 123 



XII. On a Collection of Butterflies from Nikko, Central Japan. 



By Arthur G. Butler, F.L.S., F.Z.S., &c 132 



XIII. Note on the Occurrence of Sponge-spicules in Chert from 

 the Carboniferous Limestone of L'eland. By Prof. W. J. Sollas, 

 M.A., F.R.S.E., &c 141 



XIV. Recent Dredging by the United-States Fish Commission 

 off the South Coast of New England, with some Notice of the Crus- 

 tacea obtained. By S. I. Smith 143 



XV. Contributions towards a General History of the Marine 

 Polyzoa. By the Rev. Thomas HiNCKSjB.A., F.R.S. (Plates VIU., 

 IX., & X.) 147 



XVI. Note on a Central-Asiatic Field-Mouse {Mus arianm). By 



W. T. Blaistfobd, F.R.S. &c 162 



XVII. On the Origin and Formation of the Flints of the Upper or 

 White Chalk ; with Observations upon Prof. Sollas's Paper in the 

 * Annals and Magazine of Natural History ' for December 1880. By 

 Surgeon- Major "Wallich, M.D. (Plate XI.) ib. 



New Book : — A INIonograph of the Silurian Fossils of the Girvan 

 District in Ayi-shire. By H. A. Nicholson, M.D. &c., and R. 

 Etheeibge, Jun., Esq.,*F.G.S. Fasciculus III 205 



On the Existence of a Reptile of the Ophidian Type in the Beds with 

 Osirea columba, of the Charente, by M. II. E.Sauvage ; On some 

 Arctic Holothmrida, by MM. D. C. Dauielssen and J. Keren. 205, 206 



