92 ACCOUNTS, ETC., OF THE BRITISH MUSEUM. 



The deposition of eggs and the care of eggs and young in the 

 Mollusca have been studied with a view to preparing an exhibit for 

 the gallery. 



Features of the year's work reflecting post-war conditions have 

 been the numerous consultations of the Assistant in charge of the 

 collection by persons anxious to dispose of conchological collections 

 and by medical officers engaged in the study of Bilharziosis. 



Lieut.-Col. H. H. Godwin-Austen, F.R.S., has continued his 

 work upon the arrangement of the Blanford and Godwin-Austen 

 collections ; and the Department is indebted to Mr. J. R. le B. 

 Tomlin for working out and reporting upon a collection from 

 Anguilla. 



Myriopoda and Arachnida. 



Special attention was again given to the forms of Arachnida 

 injurious to domesticated animals and to vegetation. The English 

 species of "Red Spiders" (T'etranychus and Paratetranychus) in- 

 jurious to various plants and trees were collected and determined, 

 and a paper on the group prepared for publication. The spirit 

 collection has been almost entirely respirited, and fresh naphthalene 

 was placed in the drawers containing the dry collection. 



Crustacea and Pycnogonida. 



All the accessions received during the year have been in- 

 corporated, and some progress has been made with the registration 

 of the Norman collection. A little preliminary work has been done 

 towards the arrangement of the Budde-Lund collection. 



ECHINODERMA. 



A great deal of time has been devoted to remounting and 

 respiriting the exhibited collection of Echinoderms. 



Valuable specimens removed from the gallery, for protection 

 during the war, have been returned. 



The Starfish gallery has been repainted, and the brackets 

 containing the exhibited series of Stalked Crinoids have been 

 renovated. 



Worms. 



With the help of Dr. Cognetti de Martiis and Mr. W. A. 

 Harding, all the Oligochaetes and Leeches received during the year 

 have been determined and incorporated. 



Specimens of the exhibited series of worms have, when 

 necessary, been remounted. 



The case referring to the Miners' Worm Disease has been 

 overhauled, and the specimens remounted. 



The slide-collection of Cestodes, which is constantly growing, 

 has been transferred to certain cabinets which formerly contained 

 part of the Norman collection (Crustacea). This allows room for 

 additional species to be placed in systematic order as required. 



