REPORT OF DEPARTMENT OF MARINE INVERTEBRATES. 193 



Museum with a most complete representation of all the known commercial 

 sponges of the Avorld. 



Collections received in exchange : From the Rev. A. M. Norman, of En- 

 gland, 229 species of marine invertebrates from the British Islands and 

 Norway, distributed among theditlerent groups as follows : Crustacea, 

 119 species; Mollusca, 57 species ; Tunicata, 14 species; EcliiiuKlcrmata, 

 32 species ; Actinozoa, 2 species ; Sponges, 5 species. As regards the 

 British Decapod Crustaceans, this collo(;tion is said to be one of the 

 finest ever sent out from England. IMost of the specimens are preserved 

 in alcohol, but some of the larger ones are dried and in suitable condi- 

 tion f(U' the exhibition series. Further exchanges with Mr. Norman are 

 now in i)rogress. 



From Prof. G. Stewardson Brady, of England, 88 species of Cope- 

 pod Crustaceans, of which four species are 4rue parasites, and the 

 remainder free-swimming or semi-parasitic forms, from Great Britain 

 and from the Challenger collections made in different parts of the world. 



From Mr. Edward Lovett, of England, carefully made alcoholic prep- 

 arations of 53 species of stalk-ej'ed Crustaceans from the British Chan- 

 nel. This is an exceedingly instructive collection, and is accompanied 

 by notes giving the range and abundance of each species, and indicat- 

 ing those that are used as food. 



From Prof. H. N. Moseley, of Oxford Uuiversity, England, finely pre- 

 pared specimens of the liver-fluke, Fasciola hepatica, some preserved 

 in glycerine and others mounted in Canada balsam, with dried speci- 

 7nens of Limnceus truneatulus, the host of its Cercaria stage; also alco- 

 holic preparations of the fresh-water Polyzoan, Cristatella repens, and 

 the fresh-water Hydro-Medusa, Lymnocodium Sowerbii, from the Vic- 

 toria Gardens, Begeut's Park, London. 



From Bergen's Museum, Bergen, Norway, 55 species of Echinoderms 

 from the coast of Norway and from the explorations of the Norske Nord- 

 havs expedition (Norwegian North Atlantic expedition). The several 

 groups are represented as follows : Holothurians, IG species; Sea-urchins, 

 !> species ; Star fishes, 17 species; Ophiurans, 12 species; Comatula, 1 

 species. This is a valuable collection for comparison with North Amer- 

 ican forms. 



ROUTINE WORK. 



The care and preservation of the numerous large collections received 

 by this department during the past year have demanded the almost con- 

 stant attention of the curator and his assistants, and but little time 

 has been available for original researches and the preparation of speci- 

 mens for exhibition. Every case of specimens turned over lo the de- 

 partment has been at once uni)acked and its contents assorted, clas- 

 sified and catalogued ; but the lack of ample storage s])ace has i)re vented 

 the systematic arrangement of these materials, and has greatly inter- 

 fered with the i)rogress of all work upon the collections. The work of 

 administering upon the marine invertebrates obtained by the Fish Com- 

 S. Mis. 33, pt. 2 13 



