54 
ELEVENTH ROOM. 
ROOM XI. This Room contains the general collection of Fish 
Nat, Hist. Corals. 
In the upright Cases round the Room are the Fish. 
The Cases No. 24, and Nos. 1 ——8, contain the se¬ 
ries of Dry Fish. 
Cases 24, 1 and 2 contain the Acanthopterygian 
Fishes, or those which have spinous rays to the dorsal 
fins. 
In Case 24 are the Perch Tribe, most of which, 
as the Common and Sea Perch, have the ventral fins 
placed on the thorax, before the pectoral. All these 
have seven branchiostegous rays. Others ( Cirrhites ) 
have less than seven; and some few (. Holocentrum, 
Trachichthys) have more. The Weavers, or Otter- 
Pike ( Traclimus ), and the Star-gazer ( Uranoscopus ), 
have the ventral fins just behind the pectoral. The 
Paradise Fish ( Polynemus ) and the Mullet ( Mullus) 
have the ventral fins placed on the hinder part of the 
body. 
The Gurnards ( Trigla ) are distinguished from the 
other Percoid Fish, by the bones of the face being very 
larp’e, so as to cover the cheeks. Some of these have 
the pectoral fins so large, that the fish can support 
themselves for some time in the air, and are therefore 
called Flying Gurnards ( Dactyloptera ). 
Cases 1 and 2. The Scienoid and the Sparoid Fish 
differ from the Perches, in the palate being without 
teeth. Some of these, as the Sargi ( Sargus ), have large 
teeth on the side of the jaw ( Chrysopkrys and Dentex), 
The Masnoid Fish differ from those of the two for¬ 
mer families, by the jaws being protractile. 
The Chaetodons are known at once by their com¬ 
pressed form and by their dorsal, and often their other 
fins being covered with scales like the rest of the body. 
The teeth are usually very small and numerous, like 
bristles. 
