236 



A. Petromyzonina. Teeth distinct. 



1. PETROMYZON. (Pisces, PI. IV. fig. 1.) 



Upper iuner teeth two, triangular, close together. Lower inner 

 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, pectmated 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. ; Miill. 

 Abhandl. Akad. Berhn, 1834, 77 (ISSd). —Petrotmjzon, Gray, Proc. 

 Zool. Soc. 1851. 



1. Petromyzon marinus. The Lamprey. 



Petromyzon marinus, Linn. Bloch, iii. pi. 77 ; Linn. (edit, de Gme- 

 liu) Faun. Suec. 292 ; Artedi, Ichth. gen. 64. syu. 90 ; Neue Schrift. 

 der Berl. Naturf. /. 466 ; Schneid. Bloch, i. 530, 1801 ; Penn. Brit. 

 Zool. iii. 102. pi. 10, 1/76-/8; Shaw, Gen. Zool. v. 251 . pt. 2. pi. 133, 

 1804 ; Don. Brit. Fish. pi. 81, 1820-21 ; Flem. Brit. An. 163. sp. 1, 

 182/ ; Cuv. Reg. An. ii. 404, 1829 ; Miill. Mem. de I'Acad. Berlm, 

 1834, 78. t. 4. f. 1, 5 ; Osteol. t. 9, 65, 67, 68. f. 9 ; Yarr. Brit. Fish. 

 2 ed. ii. 598, 1841. — Lamproie marhree. Daub. Encycl. Me'th. ; Bonn. 

 Planches d'Hist. Nat. de I'Enc. Meth. — Petromyzon maculosus, Ar- 

 tedi, Ichth. gen. 64. syn.90. — Petromyzon lamproie, Bloch, Hist. Nat. 

 Poiss. 31, 77 ■ pt. 13. — Petromyzon maximus, Cuv. Reg. An. ii. 118, 

 1817 .—Petromyzon, Klein, Misc. Pise. iii. f. 30. n. 3. — Mustela sive 

 Lampetra, Belon, Aquat. 76; Salv. Aquat. f. 62 b. — Lampetra inajor, 

 Schwenck. Theriotr. Siles. f.451 ; Charlet, Ouom. f.l53.n.3 ; Aldrov. 

 539. hv. 4. c. 13 ; Jonston, hv. 2. tit. 2. c. 3. pi. 24. f. b .—Lanqiroie, 

 Corns. Hist. Nat. v. 284; Fermin, Surin. 85; Rond. 310. pt. 1. liv. 13 ; 

 Valmont de Bomare, Diet. Hist. Nat. — Lampetra Rondeletii, Lam- 

 prey or Lamprey-Eel, Will. Ichth. 105. pi. 2. f. 2, 1 685 ; Ray, Syn. 

 f. 35'. n. 3. — loatzma unagi, Ksempfer, Voy. au Japan, i. pi. 12. f. 2. 

 — II mustilla, Forsk. Desc. Anim. f. 18. — Plata futa. Authors. — 

 Lampetra, Lampreda kentmanni, lampreda, marina, mustela, Gesn. 

 (germ.) 180 6. et parahp. 22. — Le PHromyzon Lamproie, Lacepede, 

 Hist. Nat. Poiss. i. 2, 3. pi. 1, 1798. — La Grande Lamproye, Cuv. 

 Reg. An. ii. 404, 1819. 



Hab. European Seas. 



2. Petromyzon Jur^. MacCulloch's Lamprey. 



Petrotnyzon Jurce, 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. 



