DEPARTMENT OF GEOLOGY. 171 



Wall-case 19, Gallery 5, has been partially re-arranged to 

 admit new plaster casts of Archegosaurus ; and some large 

 plaster casts of Labyrinthodonts have been mounted on the top 

 of the case. 



Number of specimens of Reptilia and Batrachia registered, 

 443. 



Pisces (Gallery 6). — The exhibited collection of Ftychodus 

 in table-case 8 has been re-arranged and partially re-labelled, 

 while several important new specimens have been prepared and 

 added. 



A large new upright case has been provided in the middle 

 of the gallery, and a nearly complete skeleton of Portheus 

 molossus, 14 feet in length, from the Chalk of Kansas, has 

 been mounted on one side of it. The opposite side of this case 

 has been fitted for slabs of Chimaeroids and Batoid Selachians. 



Additional Tertiary fishes have been prepared, framed, and 

 mounted for exhibition in wall-cases 17, 18. 



Numerous Chalk fishes have been extricated from the matrix, 

 and various other recent acquisitions have also been prepared 

 for study and exhibition. 



Number of specimens of Pisces registered, 81. 



Mollusca (Galleries 7 and 8, and Workroom). — The Cepha- 

 lopoda registered and labelled include: — i^mmonites from the 

 Chalk of Kent, Belemnites from the Chalk of Rugen, Ammonoids 

 and Belemnites from the Cretaceous of Germany, and plaster- 

 casts of figured specimens (mostly types) of Ammonites from 

 the Spiti Shales of the Himalayas. 



Important additions to the exhibited collection of Cepha- 

 lopoda are : — The type specimen of Belemnocamiax howeri 

 from the Chalk of Lincolnshire (table-case 16), a large Scaphite 

 from the Chalk of Yorkshire (table-case 14), and two specimens 

 of Actinoceras giganteum from the Carboniferous Limestone 

 of the Isle of Man (wall-case 1) and of Westmoreland (^table- 

 case 2). 



The unexhibited portion of the Gilbertson Collection of 

 Cephalopoda has been removed from Gallery XL, and has been 

 re-labelled for incorporation with the General Collection. 



The exhibited Carboniferous Nautiloids have been re- 

 arranged in table-case 2. 



The Palaeozoic Gastropoda and Lamellibranchia registered, 

 labelled, and incorporated include : — Gastropoda and Lamelli- 

 branchia from the Ordovician of Westmoreland (F. A. Bather 

 Coll.), the type-specimens of Planorhis dixoni and Naiadites 

 madagascariensis iroia the Permo-Carbonif erous of Madagascar 

 (G. Dixon Coll.) ; Lamellibranchia from the Permo-Carboni- 

 ferous of Nyasaland) (A. R. Andrew and T. E. G. Bailey Coll ), 

 from the Coal Measures of the Bristol Coalfield (H. Bolton 

 Coll.), from the Permian of Russia (J. A. Stigand Coll.), and 

 from the British Carboniferous rocks ; a block of weathered 



