CONTENTS: 
I. On the Avial Skeleton of the Struthionide. By Sv. Guorcr Mivarr, F.R.S., Sec. 
L.S., Professor of Biology at University College, Kensington . . . . page | 
Il. On the Ancient or Quaternary Fauna of Gibraltar, as exemplified in the Mammalian 
Remains of the Ossiferous Breccia. By Grorcr Bus, ERS, E.ZS:, GG). 00 
ILI. Notes on the Manatee (Manatus americanus) recently living in the Soctety’s Gar- 
dens. By A. H. Garrop, V.A., F.Z.S., Prosector to the Society. . . . 137 
IV. On Dinornis (Part XXI.): containing a Restoration of the Skeleton of Dinornis 
maximus, Owen. With an Appendix, on Additional Evidence of the Genus 
Dromornis in Australia. By Professor Owrn, C.B, F.RS., P.ZS., ke. . 147 
V. On the Structure and Development of the Skull in Sharks and Skates. By W. i. 
ERROR Speedeaus cowl scien <a). ch, Sad) aielaats | Bieee. Oe RS Re 
VI. A Description of the Madreporaria dredged up during the Expedition of H.M.S. 
‘ Porcupine’ in 1869 and 1870.—Part II. By Professor P. Martin Duncan, 
M.B. (Lond.), F.R.S., President of the Geological Society . . . . . . 239 
VII. On the Skull of the Agithognathous Birds.—Part U1. By W. K. Parker, ERS., 
EES ERE. Lic cate, eh. as in NTS we I pak Wie. Oe 
VIII. On the Avial Skeleton of the Pelecanide. By Sr. George Mrvart, F.R.S., 2.Z.S., 
Professor of Biology at University College, Kensington . . . . . « . 318 
1X. A Monograph of the Ostracoda of the Antwerp Crag. By Guorce Stewardson 
Brapy, I.D., F.L.S., C.M.Z.S., Professor of Natural History in the University 
of Durham College of Physical Science, Newcastle-upon-Tyne . . . . . 379 
X. On the Brain of the Sumatran Rhinoceros (Ceratorhinus sumatrensis). Dy A. H. 
Garrop, WA., F.R.S., Prosector to the Society. . . . . .... . All 
XI. A further Contribution to the Knowledge of the existing Ziphioid Wales. Genus 
Mesoplodon. By Witt1am Henry Frower, ARS. VuPZS.. 2 1 ©. ANd 
