IV CONTENTS. 



Neio Book : — Observationes circa Pezizas Pennies. Scripsit William 



Nylander. Acceduiit tabulie II. lithogi'apliicae .... 79 



On the Generic Name AlcijonceUum, and in reply to Dr. Gray's " Ob- 

 servations on Sponges and on their Ai-rangement and Nomen- 

 clature," by Dr. J. S. Eowerbank, F.R.S., F.Z.S, &c. ; On Burrow- 

 ing Ainielids, by Dr. O. A. L. Mcirch ; Contributions to the Fauna 

 of the Gulf-Stream at great Depths, by L. F. de Pourtales, Assist. 

 U.S. Coast Survey ; Deep-sea Dredgings in the Region of the 

 Gulf-Stream, by L. F. de Poiu-tales; Zoological Results of 

 Dredgings in the Bay of Biscay, by P. Fischer ; Notice of a new 

 and diminutive Species of Fossil Horse from the Tertiai'v of 

 Nebraska, by Prof. O. C. Marsh, of Yale College ; Siliceous Spi- 

 cules in Alcyonoid Corals, by Dr. J. E. Gray, F.R.S. &c. . . 84—96 



NUMBER XIV. 



XV. Observations on the ThaJassicoUidce. By G. C. "VVallich, 

 M.D., F.L.S ' 97 



XVI. Notula3 LichenologicfB. No. XXVI. By the Rev. W. A, 

 Leighton, B.A., F.L.S. — MM. A. Famintzin and J. Boranetsky on 

 the Change of the Gonidia of Lichens into Zoospores 102 



XVII. On the Ehretiacece. By John Miebs, F.R.S., F.L.S., &c. 100 



XVIII. On the Homologies of the Dental Plates and Teeth of 

 Proboscidiferous Gasteropoda. By John Denis Macdonald, M.D., 

 F.R.S., Staff-Siu-geon, R.N. (Plate XIII.) 11.3 



XIX. Notes on the Fleshy Alcyonoid Corals (Alcyonimn, Linn., 



or Zoop/ii/taria carnosa). By Dr. J, E. Geay, F.R.S., V.P.Z.S., &c. 117 



XX. Notice of a Gigantic Species of Batrachus from the Seychelles 

 Islands. By Dr. A. Gltntheb, F.R.S ' 1.31 



XXI. Descriptions of new Genera and Species of TenahrionidcB 

 from Australia and Tasmania. By Fhancis P. Pascoe, F.L.S. &c. 

 (Plate XL) 132 



XXII. On the Male and Female of the Genus Lernepa before the 

 commencement of the so-called Retrograde Metamoi-phosis. By Dr. 



A. Metzger '. . . . 154 



XXIII. Observations on the Group of the Mole-Rats. By M. A. 

 Milne- Edwards \ 157 



Nexv Boohs: — The Record of Zoological Literature, 1867, Volume 

 Fourth. Edited by Albert C. L. Giinther, M.A. &c. &c. — 

 Annuario della Societa dei Naturalisti in Modena 160—161 



Considerations draAvn from the study of Mole-Crickets, by Samuel 

 II. Scudder ; The Finner Whale of the North Sea ; the Sci-ag 

 Whale of Dudley, by Dr. J. F. Gray: Investigation of the Or- 



