DEPARTMENT OF GEOLOGY. 143 



The mounting of the tail and limbs of a large Dinosaur 

 from the Oxford Clay of Peterborough (Leeds Collection) has 

 been supervised. 



Number of specimens of Keptilia registered, 115. 



Pisces (Gallery 6). — Wall-case 1 has been refitted and 

 re-arranged to contain the William Clark Collection of 

 Fossil Sharks (Gladoselache) from the Upper Devonian of 

 Ohio, U.S.A. The larger specimens of the Museum Collection 

 of Acanthodii have also been mounted and labelled in the 

 lower part of this case. 



The re-arrangement of the table-cases of Ostracodermi, 

 Arthrodira, and Palaeozoic Elasmobranchii, to incorporate the 

 Clark Collection and other recent acquisitions, has been 

 begun. The small table-cases A to C, containing Ostra- 

 codermi, have been re-arranged to include an exhibited series 

 of Fsamifiosteus and Drepanasjns. The Ichthyodorulites 

 have been removed to table-case E, and a new selection has 

 been made for exhibition. The newly acquired plaster-casts 

 of Helicoprion have been mounted with Edestus in table- 

 case F, and provided with explanatory labels. The Acanthodii 

 and Gyracanthus have been removed to table-case 25. 



Some Acanthopterygian Chalk fishes in table-case 54 have 

 been re-arranged, mounted, and labelled. 



Number of specimens of Pisces registered, 310. 



Mollusca ; Cephalopoda (Gallery 7). — Some progress has 

 been made in re-labelling the drawers of Belemnites ; and 

 recently acquired Ammonites have been incorporated in other 

 drawers. 



Number of specimens of Cephalopoda registered, 263. 



Mollusca ; Gasteropoda and Lamellihranchiata (Gal- 

 lery S).— The Finch Collection of Tertiary Mollusca from 

 Maryland, described by Say in 1824, has been mounted, 

 labelled, and exhibited in wall-case 1. 



The newly- described type specimens of Ctenostreon burck- 

 hardti, from the Jurassic of Switzerland, have been mounted 

 and labelled in wall-case 7. 



The specimens in the drawers of Cambrian, Ordovician, and 

 Silurian Mollusca have been sorted, labelled, and arranged 

 preparatory to study and determination. 



Col. Thomas English's Collection of Mollusca from the 

 neighbourhood of the Dardanelles has been examined and 

 named. 



Number of specimens of Gasteropoda and Lamellibranchiata 

 registered, 7,393. 



Arthropoda (Gallery 8). — 23 drawers of Cambrian, Ordo- 

 vician, and Silurian Trilobites have been labelled and 

 arranged preparatory to study and determination. 



