DEPARTMENT OF GEOLOGY. 143 



The naming of the Anaspida, Heterostraci, and Osteostraci 

 has been revised ; and the specimens have been re-arranged 

 in accordance with the forthcoming Supplementary Catalogue. 



The unexhibited specimens of Asterolepis in drawers 

 have been re-arranged and labelled while incorporating recent 

 acquisitions. 



A new specimen of Trygon, from the Eocene of Monte 

 Bolca, has been mounted in a glazed frame on the wall 

 between wall-cases 3 and 4. 



A new cabinet, to contain the large unexhibited bones of 

 Leedsia prohlematica, has been placed beneath the tail 

 of this gigantic fish between wall-cases 13 and 14. 



The series of Ctenothrissidse from the English Chalk, 

 exhibited in table-case 26, has been revised, and all the 

 specimens have been re-tableted, with printed labels. 



Number of specimens of Pisces registered, 184. 



Mollusca (Galleries 7 and 8). — A plaster cast of the 

 largest known Ammonite {Pachydiscus sepiDenradensis), 6 ft. 

 8 in. in diameter, from the Upper Cretaceous of Westphalia, 

 has been mounted on the wall at the North end of Gallery 7. 



Various recently acquired Triassic and Jurassic Nautili 

 and Ammonites have been mounted, labelled, and added to 

 the cases in Gallery 7. 



The unexhibited collection of Ammonites from the White 

 Jura of Germany has been revised, re-arranged, and re-labelled. 



The table-cases of British Jurassic and Cretaceous 

 Lamellibranchia and Gastropoda, in Gallery 8, have been 

 partially re-arranged while revising the Guide Book. 



Series of newly described Eocene Lamellibranchia and 

 Gastropoda from Nigeria and Somaliland have been mounted 

 and labelled for exhibition in wall-case 3, Gallery 8. 



Number of specimens of Mollusca registered : Cephalopoda, 

 933 ; Gastropoda, 4,174 ; Lamellibranchia, 4,247. 



Arthropoda (Gallery 8). — The registration, labelling, and 

 arrangement of the unexhibited Phyllocarida, Ostracoda, 

 and Cirripedia in drawers are now nearly completed ; and 

 some progress has been made with the unexhibited Malacos- 

 traca. 



A slab of Upper Cambrian limestone from North China, 

 with numerous trilobites, has been framed, labelled, and 

 placed in wall-case 14. 



Number of specimens of Arthropoda registered, 3,206. 



Vermes (Gallery 8). — A fine group of Serpulo, advena, from 

 the Upper Old Red Sandstone of Caldy Island, lias been 

 tableted and provided with a printed label in table-case 79. 



Number of specimens of Vermes registered, 151. 



