PISCES. 
201 
copterygii), or with spinous rays (Acanthopterygii), and fishes with boneless 
branchie (Branchiosteg?). 
Fifty-eight genera were distributed under these 
four heads, corresponding for the most part with those of Linnaeus, whose 
arrangement comes next in order. 
vertical fins, or the structure of the gills. 
This is based upon the position of the 
The following tabular view 
exhibits the orders of Linneeus, with the genera of each order, taken from 
the thirteenth edition of 1767. 
1. Murena. 
2. Gymnotus. 
3. Trichiurus. 
4 
3) 
6 
IJ. JucuLares. 
9. Callionymus. 
10. Uranoscopus. 
11 
I. Aropges. Ventral fins none. 
. Anarhichas. 7. 
. Ammodytes. 8. 
. Ophidium. 
Stromateus. 
Xiphias. 
Ventral fins before the pectoral. 
. Trachinus. 13. 
12. Gadus. 
Ill. Tuoracict. 
14. Cepola. 
15. Echineis. 
16. Coryphena. 
17. Gobius. 
18. Cottus. 
19. Scorpena. 
20. 
21. 
22. 
23. 
24. 
20. 
IV. ABDOMINALES. 
31. Cobitis. 
32. Amia. 
33. Silurus. 
34. Teuthis. 
35. Loricaria. 
36. Salmo. 
37. 
38. 
239. 
40. 
41. 
42. 
Blennius. 
Ventral fins under the pectoral. 
Zeus. 26. 
Pleuronectes. eg 
Cheetodon. 28. 
Sparus. 29. 
Labrus. 30. 
Sciena. 
Perca. 
Gasterosteus. 
Scomber. 
Mullus. 
Trigla. 
Ventral fins behind the pectoral. 
Fistularia. 43. 
Esox. 44. 
Elops. 45. 
Argentina. 46. 
Atherina. 47. 
Mugil. 
Mormyrus. 
Exocetus. 
Polynemus. 
Clupea. 
Cyprinus. 
The remaining genera were arranged under the head of Amphibia, as 
Amphibia nantes, and characterized by having fixed gills without a bony 
structure. 
48. Petromyzon. 
49. Raja. 
52. Lophius. 
53. Acipenser. 
54. Cyclopterus. 
55. Balistes. 
V. Sprracuta Composira. 
50. Squalus. 51. Chimera. 
VI. Sprracuta Souiraria. 
56. Ostracion. 59. Centriscus. 
57. Tetraodon: 60. Syngnathus. 
58. Diodon. 61. Pegasus. 
405 
