NO. 1324. ELASMOBRANCHIATE FISHES— JORDAN AND FOWLER. 669 



(tritors) above and 2 below. No spiracles. Pectorals free, placed low; 

 ventral fins abdominal, man}- rayed, provided in the male with claspers, 

 the male also with '' frontal holders '' on the forehead. Dorsal tin usu- 

 ally divided, anteriorl}^ with a very strong spine, Avhich is orooved 

 behind; caudal tin low, fold-like. Skin naked, rarely, somewhat 

 prickly. Lateral line present, usually WMth numerous bi-anch<»s ante- 

 riorh", the canal system, sulcate. Notochord with i'iiio--like seo-ments. 

 Cerebral hemispheres fused with the olfactory lobes, and distant from 

 the optic lobes. (Garman.) 



Three free gills and 1} half gills, I on cacii side; istinnus niodci-ate; 

 gill-rakers .small. Oviparous, the e\^^ cases long, elliptical, with silky 

 filaments. Fishes of singular a])pearanc<', found oidy in the seas of 

 the cold I'egions. 



45. CHIM^^RA Linnseus. 

 ELEPHANT FISHES. 



C7i;ni;era Linnaeus, Syst. Nat., 10th ed., 1758, p. 236 {moiistrom). 

 Hydrolagufi Gihh, Proc. Ac. Nat. Sci. Phila., 1862, p. 331 {rolliei). 



Head somewhat compressed, the snout bluntish, protruding, fleshy, 

 not armed at tip with an appendage. Eyes very large, lateral. Teeth 

 rather strong. Lips thickish, the lower w^th a frenuni. Lateral line 

 simple on the l)ody, ])ut forking anteriorlv, forming several series of 

 mucous tubes on the head. Male with a club-shaped, cartilaginous 

 hook on the head above the snout; this hook is curved forward and 

 downward, and is armed at its tip with decurved spines, its tip fitting 

 into a depression in front of the eyes; females without this appendage. 

 Gill-opening small. Pectorals moderate; ventrals rather large, with 

 large bifid or trifid claspers in the male, the form partly dependent 

 on age or season; male also with rough appendages at the base of the 

 ventrals, protruding from a sheath of skin. First dorsal triangular, 

 preceded by a strong spine, which is grooved behind and serrated on 

 its edges; second dorsal and caudal fins low, often more or less notched. 

 Tail extending in the line of the axis of the bod}^ often more or less 

 produced in a filament at tip. Skin smooth. Fishes of singular appear- 

 ance; mo,stly of the northern seas; not valued for food. 



[xi^iocipa^ chima3ra, a fabulous monster, with the head of a lion, body 

 of a goat, and tail of a serpent.) 



56. CHIMiERA PHANTASMA Jordan and Snyder. 

 GINZAME (SILVER SHARK). 



Chimxra monstrcsa Schlegei., Fauna Japonica, Poiss., 1850, p. 300, j)l. cxxxii; 



Nagasaki (not of Linnanis). 

 Cfdmiera jjfiantasina Jordan and Snyder, Proc. \J. S. Nat. Mns., 1900, p. 338; 



Tokyo. 



Body very elongate, tapering from head into the long, filamentous 

 tail. Head deep, oblong, its width about three-fifths its length, its 



