11 LAMNIDvE LAMNA. 29 



pectorals, nearly midway between tlieni and the ventrals. This position 

 is represented in DeKay's fignre (Jfat. Hist. N- Y. Fishes, pi. G3, iig. 

 20()). Atlantic Ocean ; Cnba {Poen). 



(Oxurliina (/hiiica Miiller &- lIcuU', G'J: Lamna punctata DeK-tiy (uot of Mitcliill), 

 352: Isuroi)^!^ dckan'i (iill. Aim. Lye. N. Y. viii, 15:^: Lamna (jlauca Guntlier, viii, 391.) 



** Dors.al I'm inserted close Ueliiud tli<^ root of the pectorals, iimcli iie.arer pectorals 

 than ventrals. (IxnruK.) 



36. I. oxyrliyiiclms Raf. — Shar2)-noficd Shark ; Mackerrl Shark. 



"Pncoral portion ot" the snout as long" as tlic loiigitiidiiiiil axis of the 

 cleft of the mouth, tetrahedral, x)ointed. Angle of the mouth midway 

 between the gill-opening and nostril. Teeth — on each side 5 k)ng, lan- 

 ceolate, with sharp lateral edges, without basal ('us])S. The third tooth 

 on each side of the upper Jaw is much smaller tlian tliosc 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 dis- 

 tance from the base of the ])ectorals, which are falciform, the length of 

 their lower margin being one-fourth of that of the up])er." [(innflier.) 



(Storer's figure of ^'- Lamna punctata''^ (Fish. Mass. jd. .'57, f. 1) re])re- 



sents, so far as the position of the dorsal is concerned, the i)resent 



European species, instead of the preceding. Xo mention is made of the 



])reseuce of lateral cusps on the teeth. The occurrence of a true Isurus 



on our coast does not seem, however, to have been verified, although it 



is not imjtrobable.) 



{Lamna pnnclafa Storer, Fish. Mass. 223: Lamna f>pallanzanii Giiuthei', viii, 390: 

 hnruH oxiirhiiiivhHs Raf. Caratteri, etc.) 



27.— LAMNA Cuvier, 1817. 

 F< rheagJes. 



(Cnvior, Regne Animal, ii : tyi)e StjiidlnK cornnhicnn (imclin.) 



Body short and stout, the back considerably elevated ; snout promi- 

 nent, i)ointed ; teeth triangular, i)ointed, entire, each one with a small 

 cusp on each side at base ; (on(> oi- Itoth of these sometimes obsoh'te in 

 the young on some of the teeth :) gill-oi)enings wide ; dorsal and ])ectoral 

 fms somewliat falcate; second dorsal and anal fins very small, nearly 

 opposite each other; first dorsal close behind the root of the i)ectorals. 

 (/,'/.//;/«, a kind of shark, Irom /r///,;ri', n horrible anthro])oi)liagous monster, 

 into which a daughter of IJelus was changed by Juno, because she was 

 bidoved by Jupiter ; a bugbear used by the Greeks to frighten refractory 

 children.) 



