GEOUND FLOOR. 
39 
Sturgeons (case 29), and finally the Sharks and Eays, including 
the singular Hammer-headed Shark, and the Saw-fish {Pristis), 
which has a long projecting flattened snout, with a row of teeth 
arranged something like those of a saw on each side. Another 
very small division of fishes comprises the Lampreys, of which a 
few specimens are shown in case 44. 
The largest specimen of the class, placed near the centre of 
the room, is a full-grown example of the Great Basking Shark 
{Selache maxima) which was captured on the 2nd of March, 
1875, near Shanklin, in the Isle of Wight. Its length is twenty- 
eight feet, but, as the minute size of the teeth indicate, it is a 
comparatively harmless animal. 
II. A small gallery is devoted to the group of Articulata Insect GaUery. 
or Invertebrated animals with jointed limbs, as Insects, Spiders, 
Myriopods, and Crustacea. In the wall-cases are many curious 
examples of nests, and of specimens illustrating the ravages of 
destructive insects, and also some of their economic products. 
Selected examples of the different groups of insects are exhibited 
in systematic order in the table-cases, so as to give the visitor 
who studies them a general idea of all the most interesting 
forms and of their classification. Unfortunately, it is impossible 
to exhibit many of the most beautiful and rare species, owing to 
the deteriorating effects of continued exposure to light upon 
their colours. The main collection of insects is, on this account, 
and because of the immense space it would otherwise occupy, 
kept in cabinets in the " insect-room " on the basement floor, to 
which students can have access under the regulations which 
will be found at the end of this guide. 
III. A large gallery containing the collection of stuffed speci- Reptile 
mens and skeletons of Eeptiles, including Crocodiles, Lizards, 
Snakes and Tortoises. As is the case with the fishes, very 
many of the animals of this class are necessarily preserved in 
spirit, and therefore not suitable subjects for exhibition. The 
gallery contains examples of all the forms of general interest, 
for an account of which the visitor is referred to the special 
guide.* 
The fine and unique series of Gigantic Land Tortoises which 
* ' Guide to the Eeptiles and Fishes.' Price sixpence. 
