54 PROCEEDINGS OF THE ACADEMY OF [April, 



uniformly brown and without spots. The largest is but a little over 2 

 feet in length. The St. Martin's example shows: Head 5h; width of 

 head about 1 in its length; snout If; eye 8; width of mouth about 3; 

 interorbital space If; buccal cirrus 6; front margin of first dorsal about 

 1^; of second dorsal If; of anal If; pectoral 1^; ventral If; least depth 

 of caudal peduncle 4f; length about 23 inches. 



Two other examples, probably the Squalus punctatus Schneider, one 

 evidently from St. Martin's (Rijgersma), W. I., and the other from 

 Tortugas (James Roosevelt), Fla. Both are rather sparsely spotted 

 with deep brown. Head 5*; depth 7f to 8; snout 1| to 2 in head; 

 width of mouth 2f to S^; interorbital space If to If; front margin 

 of first dorsal If to If; of second dorsal If to 1|; of anal 2; least 

 depth of caudal peduncle 4^ to 5; pectoral 1^ to If; ventral 1| to 2; 

 length 12 1 to 14| inches. 



In the preliminary account of this genus by Miiller and Henle^ no 

 species is mentioned, though Drs. Jordan and Gilbert have designated 

 Squalus cirratus Gmelin* as its type. Miiller and Henle's next account 

 includes species.^ Dr. Gill designates "Type Ginglymostoma con- 

 color,"^ which may be assumed to be congeneric with the species of the 

 present group, though somewhat confusing as Nebrius Riippell (its 

 type N. concolor Riippell) was admitted to Ginglymostoma by Dr. Gill 

 himself. 



CAROHARIID^. 

 Carcharias littoralis (Mitchill). 



Head 5; depth 8f ; length of first dorsal 2 in head ; of second dorsal 

 2\; of anal 2f ; of lower caudal lobe 2^; pectoral If; tail 12^- in length of 

 body; entire length 44^ inches. Nantucket (B. Sharp), Mass. 



Head of a large example from Sea Isle City (W. J. Fox), and jaws 

 from Townsend's Inlet (J. D. Casey), N. J., latter wrongly confused 

 by me with Lamna cornuhica'' Also 3 other pairs of jaws without 

 data. 



ALOPIID^. 



Alopias vulpes (Gmelin). 



Head 8f ; depth 8f ; width of head If in its length; depth of head 1-J; 

 snout about 3^; eye about 6; width of mouth 3; interorbital space 2f ; 



3 Wiegm. Arch., 1837, p. 396. 



* Bull. U. S. Nat. Mus., No. 16, 1882, p. 18. 



« Syst. Besch. Flag., 1838, p. 23. 



« Ann. Lye. Nat. Hist. N. Y., 1861, p. 40. 



"> Rep. N. J. State Mus., 1905, p. 56. 



