872 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 



20973, 27190, and 27:'.91. The European species, G. f/aleus, is said to have the middle 

 t<-eth of the ,ja\vs not reduced, iu. size, the median tooth in each jaw with basal cusps; 

 the second dorsal half smaller than the first; the fius plain, etc.) 



Pages 22, 23, 24, GO. The groups called Carchartnus and Eulamia 

 should rather be considered as subgeneric sections of a single genus, 

 which may stand as 



!. CARCHARBAS Kafmesque. 

 (Rafinesque, ludice d'lttiol. Sicil. 1810, 44: type Squalus fjlaucus L.) 



The species of Carcharias should stand as follows: 



25. C. glacicus (L.) Cuv. 



26. C. O&SCUBD'US (Le Sueur) Miiller &. Heiile. 



In this species the very long pectorals extend beyond the end of the 

 dorsal, and their outer margin is four times as long as the inner. 



26 (ft). C. pBatyodoii (Poey) J. & G. 



Slaty-blue, white below; caudal blackish, other fins with dark tips. 

 Body stout. Head very short, broad, depressed, and bluntly rounded. 

 Mouth twice as broad as long, its breadth about half more than length 

 of snout; inner lobe of nostril very blunt; nostril a little nearer eye 

 than tip of snout; upper teeth very broad, triangular, erect, coarsely 

 serrate, not notched; lower teeth narrower, more finely serrate. First 

 dorsal beginning close behind pectoral, a little higher than long, not 

 falcate, its base 2.', in interspace between dorsals; second dorsal very 

 small, its base 5 in interspace; caudal moderate, 2' r J in body; anal a 

 little longer than second dorsal, and placed a little farther back; pec- 

 torals rather small, not falcate, G in total length, reaching a little past 

 dorsal; width of pectoral nearly two-thirds its length. L. 10 to 1.1 feet. 

 Cuba to Texas; abundant in the Gulf of Mexico; the specimen here 

 described being from Galveston. 



26 (f). . pBiiDiibfus (Nardo) J. & G. 



Bluish gray, whitish below. First dorsal rounded above, inserted 

 irmnediateU above the base of the pectoral ; seeond near the middle 

 of the base of the anal; pectoral one-third longer than broad, its ex- 

 ternal angle rounded. Month arched, its breadth equal to its distance 

 from tip of snout ; snout short, rounded, a little longer than in C. Itnuln , 

 eyes small: upper teeth scarcely notched on the outer margin. (Dodcr- 

 liin.) Mediterranean; ,^;iid to have been once taken at New York. 



(X</i<ttlu.i i>litinlK-iin Nardo, Priidr. lehth. Venice, LS'J7, '.: Cun-linnux (I'rioiiodon) )itil- 

 bi'i-li Valeneirnnrs MSS. in Miiller A Henle, J'la^. 38, 1--H: Kulitmiu milbcrti Gill, 

 1'roc. Acad. Nat. Sci. 1-S1, 'JlrJ, in part: ('nn-hariax ii(illj<rti Dodcrlein, Mauuale Ittio- 

 log. M.-dit.-r. ItWl, 44.) 



