236 
A. Petromyzonina. Teeth distinct. 
1. PETROMYZON. (Pisces, Pl. IV. fig. 1.) 
Upper inner teeth two, triangular, close together. Lower imner 
tooth single, large, crescent-shaped, many-toothed. Labial teeth 
conical, acute, numerous, in diverging, arched series; the inner one 
largest, and gradually becoming smaller near the edge. Tongue with 
two compressed, pectinated teeth above, and a broad, lunate, dentated 
tooth beneath, which is strongly bent up between the upper teeth in 
the centre. 
Yarr. Brit. Fish. fig. p. 603; De Kay, Zool. New York, t. 56, 216 
(bad).—Petromyzon, sp., Linn. Syst. Nat.; Rafin. Anal. Nat.; Mull. 
Abhandl. Akad. Berlin, 1834, 77 (1836).—Petromyzon, Gray, Proc. 
Zool. Soc. 1851. 
1. Perromyzon Marinus. The LAMPREY. 
Petromyzon marinus, Linn. Bloch, iii. pl. 77 ; Linn. (édit. de Gme- 
lin) Faun. Suec. 292; Artedi, Ichth. gen. 64. syn. 90; Neue Schrift. 
der Berl. Naturf. 7. 466; Schneid. Bloch, i. 530, 1801; Penn. Brit. 
Zool. iii. 102. pl. 10, 1776-78; Shaw, Gen. Zool. v. 251. pt. 2. pl. 133, 
1804; Don. Brit. Fish. pl. 81, 1820-21; Flem. Brit. An. 163. sp. 1, 
1827; Cuv. Rég. An. ii. 404, 1829; Mill. Mém. de Il’ Acad. Berlin, 
1834, 78. t. 4. f.1,5,; Osteol. t. 9, 65, 67, 68. £.9; Yarr. Brit. Fish. 
2 ed. ii. 598, 1841.—Lamproie marbrée, Daub. Encycl. Méth.; Bonn. 
Planches d’Hist. Nat. de Enc. Méth.—Petromyzon maculosus, Ar- 
tedi, Ichth. gen. 64. syn. 90.—Petromyzon lamproie, Bloch, Hist. Nat. 
Poiss. 31, 77. pt. 13.—Petromyzon maximus, Cuy. Rég. An. ii. 118, 
1817.—Petromyzon, Klein, Mise. Pisce. iii. f. 30. n. 3.—Mustela sive 
Lampetra, Belon, Aquat. 76; Salv. Aquat. f. 62 6.—Lampetra mgpor, 
Schwenck. Theriotr. Siles. f.451; Charlet, Onom. f.153.n.3; Aldrov. 
539. liv. 4.c.13; Jonston, liv. 2. tit. 2. c. 3. pl. 24. f. 5.—Lamproie, 
Coms. Hist. Nat. v. 284; Fermin, Surin. 85; Rond. 310. pt. 1. liv.13; 
Valmont de Bomare, Dict. Hist. Nat.—Lampetra Rondeletii, Lam- 
prey or Lamprey-Eel, Will. Ichth. 105. pl. 2. f. 2, 1685; Ray, Syn. 
f. 35. n. 3.—Ioatzma unagi, Keempfer, Voy. au Japan, i. pl. 12. f. 2. 
—Il mustilla, Forsk. Desc. Anim. f. 18.—Plota fluta, Authors.— 
Lampetra, Lampreda kentmanni, lampreda, marina, mustela, Gesn. 
(germ.) 180 5. et paralip. 22.—Le Pétromyzon Lamproie, Lacépéde, 
Hist. Nat. Poiss. i. 2, 3. pl. 1, 1798.—La Grande Lamproye, Cuv. 
Rég. An. ii. 404, 1819. ; 
Hab. European Seas. 
2. Perromyzon Jur&.. MacCuxtocn’s Lamprey. 
Petromyzon Jure, MacCull. West. Isles, ii. 186, 187. t. 29. f.1; 
Jen. B.V. A. 522.—Petromyzon fluviatilis, var., Flem. Brit. An. 162. 
Hab. Coast of Scotland, east shore ; island of Jura. 
Probably a variety of P. marinus: the drawing of the teeth shows 
it has no relation to P. fluviatilis. 
Peay 
