1^. CAKCHAKODON. 391 



Oxyrliina, Aijasmz, PoLss. Fvss. in. p. 2/0, pi, G. figs, 2, 2(1-2(1. 



— - goiiipliodon, Miill. ^- Jlcn/e, p. CS, pi, 28; liocaae Sf Capello, 



1 ei.r. rlaf/tost. p. 13. 

 I.anina, Owen, Odontoyr. pi. 5. fig. ]. 



I.surop.sis dekayi, Gill, Ann. Lyc^Nat. Hist. Keiu Ywk, vii. p. 40'J, 

 Oxyrhiiia punctata, Dmneril, Elastnubr. p. 409. 



rracoral portion of the snout as long as the longitudinal axis of 

 the cleft of the mouth, tetrahedral, pointed. Angle of the mouth 

 midway between the gill-opening and nostril. Teeth -ff on each 

 side, long, lanceolate, with sharp lateral edges, without basal cusps. 

 The third tooth on each side of the upper jaw is much smaller than 

 those next to it. Gill-openings extremely wide, the width of the 

 first being rather more than its distance from the last. Origin of 

 the dorsal fin at a very short distance from the base of the pectorals, 

 which are falciform, the length of their lower margin being one- 

 fourth of that of the upper. 



Mediterranean and Atlantic, 



It. Fine young specimen, 33 inches long, Madeira. Tresented by 



J. Y, Johnson, Esq. 

 h-d. Jaws of very large examples. 



3. Lanma glauca, 



Oxyrhina glauca, Midi, c^- Henlv, p. (50, pi. 29 ; Schh-y. Fmin. Japvn. 

 Poiss. p. 303 ; Dumeril, Elasmobr. p. 409. 



Scarcely distinct from L. spallanzanii, from Avliieh it has been 

 separated on account of the more backward position of the dorsal 

 fin, which is opposite to the middle of the interspace between pec- 

 toral and ventral, 



Japan ; Cape seas, 

 «. Stuftcd, 36 inches long. Cape seas. 

 h. Stuff"ed, 29 inches long. 

 c. Jaws. St. Helena. Presented by J. C. Melliss, Esq. 



13. CARCHARODON. 



Carcharodon, (A. Smith*) Midler ^- Ilmle, p. 70. 



The first dorsal fin opposite to the space between the pectoral 

 and ventral, without spine ; the second and the anal very small. A 

 pit at the root of the caudal, wliich has the lower lobe well de- 

 veloped. Side of the tail with a keel. No membrana nictitans. 

 Spiracles minute (and probably frequently absent). Mouth crescent- 

 shaped, wide. Teeth large. Hat, erect, regularly trijimgular, ser- 

 rated. GiU-openings wide. 



Temperate and tropical seas. 



* The autlidr of the first voluinc of the ' Ichthyologie G^neralo' will be piad 

 ; to hear that Sir Andrew Smith continues to take interest in tlic projjrcss of his 

 Ifavouritc science (1870). See Dumeril, Elasmobr. p. 410, footnote 1. 



