19 
GALLERY.] NATURAL HISTORY. 
Case 154. The Sea Parrots; as the parroquet auk, crested auk, Cape 
penguin, crested penguin, &c.: the Guillemots; as the foolish guillemot, 
black guillemot of Europe. 
Cases 155—160 contain the Gulls: these birds are divided as fol¬ 
lows : 
Case 155. The Petrels, which are found in the high latitudes of 
both hemispheres, feed on fish, &c.; as the diving petrel,stormy petrel, 
Manks petrel, Fulmar petrel, and broad-billed petrel, &c.; giant petrel, 
wandering albatross, &c. 
Cases 157—159. The true Gulls: they are found in every part of 
the world, feeding on all kinds of animal matter, fish, &c., as the Arctic 
gull, glaucous gull, black-backed gull, little gull, &c., of Europe; fork¬ 
tailed gull, kittiwake gull, &c. 
Case 160. The Terns are met with on every coast in the world, and 
occasionally inland, on the lakes, feeding on marine productions; as 
the Caspian tern, roseate tern, gull-billed tern, minute tern, &c., of 
Europe; white-winged tern, &c. The Skimmers have remarkably 
formed bills, that enable them to skim the surface of the sea, in which 
they dip the lower mandible, the upper being elevated out of the water, 
until the prey is felt by the lower ; as in the black skimmer. 
Case 161. The Tropic Birds are peculiar to tropical climates, 
where they catch the flying-fish, &c., as the common tropic bird, red-tailed 
tropic bird, &c. The Darters live in small flocks, on the trees that 
overhang the rivers, &c., from whence they plunge into the water, and 
catch fish by darting at them with their sharp bill and long vibrating 
neck; as the white-bellied darter, &c. 
Cases 162—166. The Pelicans that inhabit the marshes and sea- 
coasts, feeding on fish, &c., as the gannet of Europe, &c. Cases 162 
and 163. White pelican, red-backed pelican, &c. Case 161. Common 
cormorant, shag of Europe, &c.; and Case 166. Greater frigate bird, 
and lesser frigate bird. 
The Shells of Molluscous Animals 
are placed in the larger Table Cases across the sides of the room, 
(in progress of arrangement). 
Tables 1 to 20. The shells of Gasteropods with comb-like gills 
( Ptenobranchiata ). 
Table 1 to 2. The shells of the Venomous Mollusca ( Toxifera), 
which have elongated teeth implanted in the flesh of the retractile 
proboscis, which are supposed to be venomous, and by which they are 
said to kill their food, as the cone shells ( Conus'), among which is the 
celebrated 68 Glory of the Sea” (C. gloria maris) from the Philippine 
Islands. The Needle Shells ( Terebra ), and the Slit-mouth Shells 
(Pleurotoma ), with a notch or slit on the hinder part of the outer lip. 
Table 3 to 13. The shells of the Trunkbearing Mollusca (Proboscidi- 
fera) which have an elongated retractile proboscis, and are furnished 
with a lingual membrane armed with one, three, or seven rows of hard 
teeth, by which they make perforations in other shells, and so extract 
the animals which form them. They feed almost exclusively on living 
or recently dead mollusca or fish. They are divided according to the 
