FISHES. 



ORDER 



CARTILAGINEI. 



PETROMYZON. LAMPREY. 



Generic Character. 



Corpus anguilliforme. 



Os subtus, dentibus numer- 



osis circulatim dispositis. 

 Spiracula utrinque septem 



ad latera colli. 



Bodi/ Eel-shaped. 



Mouth beneath, with numer- 

 ous teeth in circular rows. 



Spiracles seven on each side 

 the neck. 



GREAT LAMPREY. 



Petromyzon Marinus. P. olimceus, albido fuscoque mrius, 

 pinnis subaurantiis, cauda subccerulea. 



Olive Lamprey with brown and whitish variegations^ some- 

 what orange-coloured fins, and blueish tail. 



Petromyzon marinus. P. ore intus papilloso, pinna dorsali 

 posteriore a cauda distincta. Lin. Syst. Nat. p. 394. 



Petromyzon maculosus^ ordinibus dentium circiter viginti. 

 Art, gen. 64. Syn. 90. 



Petromyzon ordinibus dentium acutomm plurimis. Block, t. 77* 



Sea Lamprey. Fenn. Brit. ZooL 



A n its general appearance this fish makes a near 

 approach to the Eel tribe, and particularly to the 

 V. V. p. II. 3 7 



