130 
NATURAL HISTORY. 
[[new BUILDING. 
Philonexus. Belemnosepia. 
Cirroteuthis. Belemnitella. 
Fam. 2. Sepiadce. 
Sepiola. 
Rossia. 
Onychoteutliis, 38. 
Enoploteuthis. 
Kalaeno. 
Peratoptera. 
Omastrephes. 
Loligopsis. 
Histrioteuthis. 
Cranchia, 38. 
Loligo, 38. 
Sepioteuthis, 38. 
Teudopsis. 
Sepia, 38. 
Beloptera, 38. 
? Fam. 3. Belemnitidce. 
Fam. 4. SpirulidcB. 
Spirula, 38. 
Fam. 5. Ammonitidcs . 
Ammonites, 38. 
Planites, 38. 
Globites, 38. 
Crioceratites. 
Scaphites, 38. 
Hamites, 38. 
Turrilites, 38. 
Baculites, 38. 
Order II. Nauti- 
lophora. 
Fam. 1. Nautilidce . 
Belemnites, 38. Omphalia, 38. 
Nautilus, 38. 
Clymenis, 38. 
Aganides, 38. 
Lituites, 38. 
Orthostoma. 
Gyroceratites. 
Orthoceras, 38. 
Conoceras. 
Cyrtolites. 
Cyrtoceras. 
Actinoceras. 
Fam. 2. Goniatidce . 
Phragmolites. 
Ceratites, 38. 
Goniatites, 38. 
NORTHERN ZOOLOGICAL GALLERY. 
ROOM I. 
The Table Cases 1—6 contain the Sponges, which 
resemble the Corals in various particulars, but their 
animal nature is not distinctly made out; those found in 
collections are merely the skeletons of the living mass, 
entirely destitute of the gelatinous portion which consti¬ 
tutes the animal, if it be really of that nature. Some 
naturalists have considered these skeletons, or Sponges, 
as analogous to the stems of Antipathes, or Black Co¬ 
ral, and consequently to the axes of zoophytes ; and 
have fancied that, when alive, they were covered, like 
the Antipathes , with a perishable crust, consisting of the 
dried polypes. But recent observations on them in their 
living state have not verified this theory; for they have 
been found to be entirely destitute of any polypi, tb be 
mere living masses, covered with a gelatinous coat, and 
absorbing water through the small pores spread over their 
surface, and emitting it by the larger scattered holes 
called oscula; and though the fibres of many of the 
sponges greatly resemble the axes of the Gorgonice, in 
their chemical composition and organic structure, they 
