GEOUND FLOOE. 
45 
C the fine series of Linckia, and in 2 D-F and 3 A Pentaceros 
callimorplius and the extensive collection of Oreaster-, in 3 E 
are two remarkable specimens of Astropecten ; in 4 C an almost 
complete example of the brittlestar (OpJiiomastix annulosa) 
should be noticed, and on the tops of cases 5 and 6 are good 
examples of Diadema and Echinus. In a separate case on the 
east side of the gallery is Luidia savignii from Mauritius, one 
of the largest known kinds of star-fish. The most beautiful 
and remarkable specimens in the gallery are the stalked Crinoids, 
which were collected by the Challenger/' and one found at- 
tached to an old telegraph wire which was taken up in the 
Caribbean Sea. These deep-sea forms, so abundant in earlier 
periods of the world's history, are exhibited on tables in the 
corners of the gallery, by case 7.* 
The wall-cases contain types of the very various and different 
groups which are put together as Worms or Veemes. Case 1 con- 
tains the Tape-worms or Cestoda, and the Flukes or Trematoda, 
the life history of a type of each being illustrated by specimens, 
figures, and models ; in case 2 the Eound-worms are illustrated 
by models of Trichina, and the anatomical structure of various 
other forms is shown by the aid of diagrams. Case 3 contains 
the free-living Terrestrial and Marine Worms, the Leeches, and 
Gephyreans. Case 4 is devoted to specimens of Echinodermata 
preserved in spirit, especially Holothurians, or sea-slugs and 
sea-cucumbers. 
V. A large gallery is devoted to the extensive division of Shell Gallery. 
MoLLUSCA, the exhibition of which is however mainly re- 
stricted to their shells. In some cases the form of the animal 
itself is shown either by specimens in spirit or by means of 
models. 
The first table-case on the left as the gallery is entered contains 
the Argonauts, the beautiful pearly Nautilus, the rest of the 
Cephalopods (Octopus, Squids, &c.), the fragile glassy Pteropods, 
and the Cones, one of the most beautiful groups of the Gastro- 
pods, a division which includes Snails, Whelks, Slugs and all 
those Molluscs which crawl upon the under surface of their body. 
They are contained in cases 1-17. The Bivalves or those 
* 'Guide to the Shell and Star-fish Galleries (MoUusca, Echinodermata, 
Vermes).' Price fourpence. 
