department of zoology. 91 



Pisces. 



In the Spirit Building the bottles of specimens that formerly 

 covered the table-cases have not been brought back in view of the 

 fact that they will again have to be removed if the proposed exten- 

 sion of the iron gallery is carried out ; other specimens are now 

 accumulating on the table-cases, and it is urgently necessary that 

 some steps be taken to relieve the congestion. The work of 

 replenishing the collection with spirit has been carried on. 



The most notable addition to the Exhibition Gallery is a large 

 King Salmon (^Onco^hynclius quinnat) from British (;olumbia, pre- 

 sented by liobert Page, Esq. The taxidermist has been principally 

 engaged in preparing casts and models from specimens in the sj^irit 

 collection . 



Tunic AT A. 



193 bottles of Plankton (including pelagic Tunicala) collected 

 by the " Discovery " and " Terra Nova " Antarctic Expeditions 

 have been sent to Prof. W. Grarstang for determination and report. 



Pterobranchia. 



Additional specimens have been exhibited and the whole series, 

 comprising 12 specimens, has been re-labelled in a uniform manner. 



MOLLUSCA. 



The cases of shells which were removed to the Bird Gallery 

 during the war haA^e been replaced in the Shell Gallery. wing- 

 to part of the latter having been added to the Bird Room, certain 

 exhibition cases have been dispensed with and some of the cabinets 

 have been placed in the Coral Gallery immediately south of the 

 Shell Gallery. As the systematic arrangement of the series of cases 

 was thus interfered with, a key to the exhibited collection has been 

 prepared for the guidance of students. 



The study series of several genera has been re-arranged and some 

 attention paid to the exhibited specimens. 



The collection of microscopical preparations has been re-arranged 

 and a card-index prepared. The examination, registration and 

 incorporation of accessions received daring the war have been 

 continued and are now practically completed, special attention 

 having been given to collections from South Georgia, Madagascar, ' 

 Peru and W. Africa. The study of the Opisthobranchiata obtained 

 by the " Terra Nova " Antarctic Expedition has been continued, and 

 some time has been devoted to the distribution of other parts of the 

 Molluscan collection formed by that expedition among specialists for 

 study and report, and to the registration of parts of the collection 

 already worked out. The anatomy and distribution of British 

 Hydrobiidae have been studied in connection with the discovery of 

 parthenogenesis in Pa'udestrina jenkinsi, and accounts of the 

 anatomy and habits of the latter have been prepared. 



