LIST OF FISH. 



John Bay, in his ' Synopsis Methodicus Pisciumj 1711, placed 

 the cartilagineous fishes together in a group, and divided them into 



1. Cartilaginei longi = Squalus — 2. C. plant et lati = Raia. — 

 3. The lampreys by themselves. 



Linnaeus (Syst. Nat. ed. 2, p. 349, 1766) arranged these animals 

 with the Amphibia : forming for them and some other anomalous 

 fish, as Lophius, Cycloptcrus, Diodon, §-c, an order designated 

 Nantes. This order was divided into two divisions, as I. Spiracles 

 compound, or many, as Petromyzon, spiracles 7. Raja and Squa- 

 lus, spiracles 5. Chimcera, spiracle single, four cut. II. Spiracles 

 single, containing Acipenser and the other anomalous fishes. 



Graelin, (Syst. Nat. i. 1131), who adopted Artedi's arrangement, 

 removed them and the other anomalous fish and formed them into 

 an order, called Chrondropteryg ii. 



M. De Blainville, in his new distribution of the Animal Kingdom 

 (Bull. Soc.Phil. 1816, 120, and Jour.de Phys. 1816, 260), forms the 

 cartilagineous fish into a sub-class, which he calls Dermodontes ou 

 Cartilagineux, and divides them into four orders : — 1 . Cyclostomes 

 — 2. Selaques (Selaca). — 3. Esturgeons. — 4. Polydontes. 



Cuvier, in his ' Regne Animal? ii. 1817, 2 ed. 278, 1829, arranges 

 the cartilagineous fish thus: — 1. A branchies libres. Fam. 1. Sttirio- 

 niens. — 1. Esturgeons. — 2. Polyodons. — 3. Chimeres (Chimeres 

 and Callorhynques). — 2. A branchies fixes. Fam. 2. Selaciens. 

 — 1. Squalus. — 2. Marteaux. — 3. Anges. ■ — 4. Scies. — 5. Raies. 

 Fam. 3. Suceurs ou Cyclostomes, Reg. Anim. 2 ed. 278, 1829. 



Professor John Miiller, in his ' Anatomy of Cyclostomata,' in the 

 Berlin Academy for 1836, proposes the following arrangement 

 of the Chondropterygia: — Order 1. Bracliiostega. Fam. 1. Cata- 

 phracta. a. Sturiones. — 1. Sturio. a. Huso sturio, sterlata, and 

 Helops. Fam. 2. Nuda. b. Spathulariav — 2. Spathularia. Order 



2. Holocephala. 1. Chimera. — 2. Callorhynchus. Order 3. Pla- 

 giostomata. Fam. 1. Squali. 1. Squalus. — 2. Zygaena. — 3. Squa- 

 lina. — 4. Pristis. Fam. 2. Raiaas. — 5. Rhinobates. — 6. Torpedo. 

 — 7. Raia. — 8. Prolterygia. — 9. Myliobates. — 10. Cephaloptera. 

 Order 4. Cyclostomata. Fam. 1. Hyperoartia. a. Dentata. — 1. 

 Petromyzon. b. Edentata. — 2. Ammoccetes. Fam. 2. Hyperotreta. 



3. Myxine. — 4. Bodellostoma. 



