IV CONTENTS. 



Page 

 tchthys. By Albany Hancock, F.L.S., and Thomas Atthet. 

 (Plate VI.) 73 



X. On Foraminifera from the Gulf and River St. Lawrence. By 



G. M. Dawson 83 



XI. Outline of some Observations on the Organization of Oligo- 

 chfetous Annelids. By E. Ray Lankester, B.A. Oxon 90 



XII. The Tertiary Shells of the Amazons Valley. By Henry 

 Woodward, F.G.S.,F.Z.S., of the British Museum. (Plate V.) .. 101 



XIII. On Af/ulhasia Davidsonu, a new Palliobranchiate Genus 

 and Species. By William King, Sc.D., Professor of Mineralogy 

 and Geology in Queen's College, Galway. (Plate XI. figs. 1-8.) . . 109 



XIV. On Fossil Sponge-spicules of the Greensand compared 

 with those of existing Species. By H. J. Carter, F.R.S. &c. 

 (Plates VH.-X.) 112 



XV. On a new Species of Marginella from South Afi-ica. By 



F. P. Marrat. (Plate XI. fig. 13.) 141 



XVI. Notes on the Structure of the Critioidea, Ci/stidea, and 

 Blastoidea. By E. Billings, F.G.S., Palfeontologist of the Geolo- 

 gical Survey oif Canada 142 



XVII. On a Species of Arenaceous Foraminifer (?) from the 

 Carboniferous Limestone of Devonshire. By Edward Parfitt, 

 Esq. (Plate XI. figs. 9-12.) 158 



XVIII. Replv to Dr. Gray on Testudo chilensis &c. By P. L. 

 SCLATER, PLD", F.R.S IGl 



XIX. On Ateles Bartletti. By Dr. J. E. Gbay, F.R.S. &c 1G3 



XX. Description of a new Species of Butterfly of the Genus 

 Paphia. By Osbert Salvin, M.A., F.L.S., &c 165 



Neiv Books : — Natural-History Transactions of Northumberland and 

 Durham. Vol. HI. Part 2. — Cardiff Naturalists' Society, Report 

 and Transactions, 1868-69. — Geology, by Prof. John Moms, 

 F.G.S. &c., and Prof T. Rupert Jones, F.G.S. &c. First Series. 

 — A Manual of Zoology for the use of Students, with a general 

 Introduction on the Principles of Zoology, by Henry Alleyne 

 Nicholson, M.D. &c. — Advanced Text-Book of Zoology, for the 

 use of Schools, by H. Alleyne Nicholson, M.D. &c 166 — 169 



On the Assumption of the Adult Form by the Genera Cyprcsa and 

 Ringicida, and by certain Species of the Genus Astarte, by 

 Searles V. Wood ; Observations on the Invertebrata of Massa- 

 chusetts, by Alfred Bell, Esq. ; On Oligochfetous Annelids, by 

 ,^ E. Ray Lankester ; Abdominal Sense-organs in a Fly, by Dr. 

 A. S. Packard, Juu. ; On the Carboniferous Flora of Bear Island, 

 by Professor Oswald Ileer, F.M.G.S. ; The Caudal Styles of 

 Insects Sense-organs, i. e. Abdominal Antennae, by Dr. A. S. 

 Packard, Jun 171—176 



