SI 
pearance ; the Scorpion Lobster ( Thalassina), which 
lives great part of its life on land, and destroys the new 
made roads in India by the excavations it forms under 
them; Lobsters (Astacus), the specimen exhibited 
was pale red, nearly of its present colour when alive ; 
Shrimps ( Palemon), varying greatly in size. Then fol¬ 
lows Case 8, the Sea Mantes (Squilla), the glass-like 
Alima, and the Phyllosoma, with its shell scarcely 
thicker than a piece of paper. 
The rest of this Table is filled with the Crustacea 
which have sessile immoveable eyes, as, the fresh water 
Shrimps, ( Gammarus ), the Whale Lice (Cyamus), the 
Wood Lice (Oniscus), Sea Bulls (CymothoaJ, and the 
King Crab, whose style at the end of the body serves 
the animal as a means of defence, and is used by the 
natives of America to form points to their arrows: 
on the Wall, over the mantel piece, is a large King 
Crab from China, presented by J. Reeves, Esq. and a 
Lobster from the mouth of the Thames, by W. Yarrel, 
Esq. 
Cases 9 and 10 (before the Windows), contain an 
arrangement of spiders (ArachnidaJ, Amongst them 
are the Bird Spiders (Mygale), some of which form a 
tubular nest, closed by a moveable lid. One of those nests 
is shewn in this case: they are sometimes called Crab 
Spiders by the West Indians, and their bite is considered 
dangerous. Some of the Spinning Spiders (Epeira), 
are said to form a web so strong as to arrest the flight 
of small birds; one in this case from Bermuda (E. cla- 
vipes), surrounds its nest with a bright yellow silk, 
which is used by the natives as thread. Some of them 
have their bodies covered with a hard skin, so that they 
resemble Crabs in miniature; others are armed with 
long spines. The Jumping Spiders (Saltlcus) usually 
have the femora of the two fore legs remarkably large. 
Their habits are curious, and may be readily observed 
in a very common species, the Aranea scenica of Lin¬ 
naeus. It is frequently seen on sunny w T alls and palings, 
ROOM IX. 
Nat. Hist. 
running 
