172 ACCOUNTS, ETC., OF THE BRITISH MUSEUM. 



Three exhibited series of special interest have been arranged : 

 Annelids commensal with sponges, from the Chalk ; rocks and 

 shells bored in Tertiary times by Polydora ; tubes built of 

 Fish-debris, Coniferous leaflets, or Echinoderm fragments, and 

 other tubes, all supposed to have been formed by Terebelloid 

 worms. These complete the labelling and re-arrangement of 

 the exhibited Annelids from the Cretaceous rocks of Britain. 



The unexhibited collection of foreign Annelids has been 

 transferred to drawers in the Workroom. 



Number of specimens of Annelida registered, 161. 



Brachiopoda (Gallery 8 and Workroom). — Progress has 

 been made with the registration of the Walker collection. 



The principal smaller collections registered, labelled, and 

 incorporated during the year include : — Palaeozoic Brachiopods 

 from Burma (Geol. Surv., India) ; a Jurassic collection from 

 France (L. Charpy) ; and specimens from the Chalk near Dover 

 (Cockburn Bequest). 



Number of specimens of Brachiopoda registered, 10,012, 



Polyzoa (Gallery 8 and Workroom). — The collection of 

 Cretaceous Cheilostome Polyzoa (about 5,000 specimens), from 

 Riigen, Denmark, Holland, and North America, has been 

 registered, mounted, and sorted as a preliminary to the pre- 

 paration of Vol. III. of the catalogue of the Cretaceous forms. 

 Recently acquired specimens of Polyzoa have been registered, 

 labelled, and incorporated, and include the Mockler collection 

 from the Chalk of Wiltshire, Sussex, and Germany, the Savin 

 collection from the Chalk of Trimingham, Norfolk, and the 

 Charpy collection from the Jurassic of the Jura district. 



Number of specimens of Polyzoa registered, .5,874. 



Anthozoa and Hydrozoa (Gallery 10). — An exhibition of 

 Jurassic Medusae has been arranged, with explanatory diagrams 

 and labels, in a special case between wall-cases 7 and 8. 



Specimens have been registered, labelled and incorporated 

 from the Chalk of England (Cockburn bequest) and of Riigen 

 (Laur collection), the Trias of the Tyrol, the Silurian of New 

 South Wales (Shearsby collection), and the Ordovician of 

 S. Wales. 



Number of specimens of Anthozoa and Hydrozoa registered, 

 469. 



Porifera (Gallery 10). — Specimens of the problematical 

 group Archseocyathinae (T. G. Taylor collection) have been 

 registered and labelled. Chalk sponges from Devon and Dorset 

 (Bather collection) and Corallian and Bathonian specimens from 

 Northern France and the Jura district (Charpy collection) have 

 been registered, labelled, and incorporated. 



Number of specimens of Porifera registered, 1 63. 



