180 ACCOUNTS, ETC., OF THE BRITISH MUSEUM. 



The revision of the Hag-fishes (Myxine) may be men- 

 tioned, as a knowledge of the species and their distribution 

 is important on account of their destructiveness to food- 

 fishes. 



IV. MOLLUSCA. 



Advice and assistance has been given on the following 

 questions : — 



Destruction of woodwork of piers and jetties by Teredo 

 and other boring Mollusca in Burma and in the Red Sea. 



Methods of controlling and exterminating the Grey Slug 

 (Maryland Agricultural Station). 



Growth of Anomia upon submarine cables. 



V. Arachnida. 



1. Gamasid mite {Leiognathus sp.) attacking a woman in 

 the Deccan, India ; the specimen sent for identification was 

 badly mounted and the species could not be determined. 



2. Mite (Tarsonemus) causing considerable damage to 

 ferns in London Nursery-gardens ; short report sent to the 

 Board of Agriculture. 



3. Mite (Pediculoides ventriaosus) attacking dock labourers 

 at Greenwich, and preventing the unloading of cargoes of 

 Egyptian cotton-seed. Information sent to the Board of 

 Agriculture, in reply to a letter. 



4. Tyroglyphid mites {Glycyphagus domesticus and Tyro- 

 'iU8 sj:».) infecting houses. 



VI. Crustacea. 



Advice has been asked for, on matters relating to Crus- 

 tacea, b}^ members of the scientific staffs of the Board of 

 Agriculture and Fisheries, the Fishery Board for Scotland, 

 the Department of Agriculture and Technical Instruction for 

 Ireland (Fisheries Branch), and the Marine Biological Asso- 

 ciation. Inquiries by members of the public on the following, 

 among other points, have been answered : — 



Occurrence of Well-shrimps in a water-supply. 

 Destruction of submarine timber by boring Crustacea at 

 Ilfracombe and at Eangoon. 



VII. POLYZOA. 



A paper calling attention to the serious troubles caused 

 by the growth of Polyzoa in waterworks has been published 

 by the Keeper ; and various enquiries on this subject have 

 been answered. 



VIII. Other Invertebrates. 



Injuries to submarine cables, apparently due to Polychset 

 worms, have been investigated ; and information has been 

 given to Telegraph Companies. 



A number of determinations have been made of specimens 

 found injuring plants in the Royal Gardens, Kew. 



