DEPARTMENT OF ZOOLOGY. 101 



Crustacea. — The cabinets containing the dried collection of 

 Crustacea, Arachnida and Myriopoda have been transferred 

 from the Insect-room to the new Crustacea-room. 



The collection of microscopic preparations of the Amphipoda 

 collected by the " Challenger " expedition, which were, owing 

 to the faulty manner in which they were originally preserved, 

 rapidly deteriorating, have been very kindly remounted in an 

 excellent and scientific manner by Mr. C. Edmund Aikin, who 

 also has made a detailed report on this collection, which will 

 be preserved in the Department. 



Dr. Alcock also. Superintendent of the Indian Museum, 

 Calcutta, has been good enough to examine and re-arrange the 

 specimens of the genus Penceus, and the registered additions 

 to the collection of Brachyura have been entered in the MS. 

 Catalogues. 



Vermes. — A series of figures illustrative of the larva of 

 Polychaeta has been added, to the show-cases. The exhibited 

 series of Cestoda, Trematoda, Nematoda, Turbellaria, and 

 Nemertinea has been entirely remounted, and a number of 

 fresh explanatory diagrams have been prepared. 



The microscopic preparations of Rotifers and " Challenger " 

 Nemertines have been carefully looked over by Mr. Aikin, and 

 a number of those made during the cruise of that vessel have 

 been remounted. Nearly all the worms obtained during the 

 year have been authoritatively determined. 



Echinoder'ina.—Tha accessions to this class have been 

 determined and entered in the MS. Catalogue. A commence- 

 ment has been made of the re-arrangement of the exhibition 

 series ; the Holothurians have been remounted and a selection 

 of drawings of living*forms has been mounted and exhibited. 

 The method of mounting on velvet, begun last year for Corals, 

 has been adopted for Echinoderms, and one case is finished, 

 and with this arrangement more numerous explanatory labels 

 have been supplied. 



Anthozoa. — The specimens of the genera Montipora and 

 Anacropora, described in the third volume of the Catalogue 

 of Corals, have either been set out in the Gallery, or systema- 

 tically stored with the rest of the study collection. In 

 addition to the case of Monliporoi, four others, two of great 

 interest, have been arranged ; these last illustrate (1) the 

 component parts of a coral reef, as collected by Mr. Darwin 

 during the voyage of the " Beagle," and (2) the leading forms 

 of deep-sea corals ; the two other cases contain the Mu'^hroom 

 Corals {Fangiidoi), and their allies. A collection of sea- 

 anemones in spirit is now for the first time exhibited, and 



