Jordan and St'frmaftn. Fis/ics of North America. 49 



(', ,// more (// M'^nt,,, SI-ALLANZANI, Viaggio duo Sicilio, iv, 325, 1797, Messina. 

 ISWMN <.<//,%,/,/<., KAI.-INKSIM'K, Caratteri, etc., 12, 1810, Palermo. 

 Igurii**i><tllitn-<nii, KAFiNKSiirr,, Indice, GO, 1810, (after Spallanzani). 

 Osyn-Jtiitit $pnUiiH~tnii, BONAPARTE, Fauna Italica, xxvi, 134, pi. 136, f. 1, 1839. 

 OxijrUna <ji}>hodo>i, MULLER & HENLE, Plagiostomen, 68, 1838, Atlantic Ocean. 

 inf, MAORI, Mem. Ac. Sci. Napoli, 55, 1819, Naples. 



t!, Gf'NTHER, Cat., vin, 390, 1870. 

 Oxyrhiiuit<2><M>t-~', PUMERIL, El asmob ranches, 408, 1870. 

 Carchanas ti'jris, A'nvoou, Proc. Bust. Soc. Nat. Hist., xn, 268, 1869, Provincetown, Mass. 



33. LAMNA, Cuvier. 



(PORBEAGLES.) 



Lamna, CUVIER, Regne Animal, Ed. i, 126, 1817, (cornubicus). 



Lamia, Ilisso, Eur. Mcrid., 123, in, 1826 (cornubicus, name preoccupied). 



Selanonius, FLEMING, British Animals, 169, 1828, (walkericornubvcus). 



Body short and stout, the back considerably elevated ; snout prominent, 

 pointed ; teeth triangular, pointed, entire, each one with a small cusp on 

 each side at base; one or both of these sometimes obsolete on some of 

 the teeth in the young; gill openings wide; dorsal and pectoral fins some- 

 what falcate ; second dorsal and anal fins very small, nearly opposite 

 each other ; first dorsal close behind the root of the pectorals. This 

 genus is very close to Isurus, with which fossil forms seem to connect it. 

 Perhaps the two should be united under the older name Isurus. (Ad/Liva, 

 a kind of shark, from ^.a/uia, a horrible anthropophagous monster, a 

 bugbear used by the Greeks to frighten refractory children.) 



67. LAMNA CORNUBICA, (Gme)in). 

 (PORBEAGLE; MACKEREL SHARK.) 



Snout conical, pointed, rather longer than the cleft of the mouth ; 

 teeth 5y| on each side; the third tooth on each side in the upper jaw 

 small; first dorsal beginning over the axil of the pectorals. Color bluish 

 gray, A large and fierce pelagic shark reaching a length of 10 feet. 

 North Atlantic and North Pacific, occasionally taken on the coast of New 

 England and southward; not rare in California, (cornubicus, from Corn- 

 wall, from which region the species was early described.) (Eu.) 



<,rHiil>icus*, GMELIN, Syst. Nat., i, 1497, 1788, shores of Cornwall. 

 Lamna cortmbica, GUNTHEU, Cat., vin, 389, 1870 ; JORDAN & GILBERT, Synopsis, 30, 1883. 

 S<2uahts nasus, BONNATERRE, Tableau Encycl., Ichth., 10, 1788, Cornwall, after Beaumaris of 



Pennant. 



Squalus pennanti, WALBAUM, Artedi Piscium, 517, 1792, Cornwall, after Pennant. 

 Squalns monensis, SHAW, Gen. Zool., v, 350, 1804, Anglesea. 

 Squalus selanomt*, LEACH, Edinb. Mem. Wern. Soc., 1819, n, pi. 1, fig. 2, 55. ' 

 Selanonins v-alkcri, FLEMING, British Animals, 169, 1828, Lochfyne, Argyleshire, "Sinus Sela 



nonetts." 1 



* We do not know which of the two names, cornubicus and nasus, haslpriority ; we follow usage 

 in retaining the name of Gmelin. 



F. N. A. - 5 



