52 PROCEEDINGS OF THE ACADEMY OF [April, 



NOTES ON SHARKS. 

 BY HENRY W. FOWLER. 



The species included in this paper are based on material contained in 

 the collection of the Academy of Natural Sciences of Philadelphia, 

 unless otherwise stated . 



HEXANOHID^. 

 Hexanchus griseus (Gmelin). 



A dried skin without data. 

 Heptrauchias cinereus (Gmelin). 



Head 6f to 6^ ; depth 10 to lOf ; snout 3 in head ; eye 4 to 4| ; length of 

 mouth 2^ to 2 J ; interorbital space 3^ to 3f ; front margin of first dorsal 

 2| to 2f ; front margin of anal 3f to 4|-; least depth of caudal peduncle 

 4; front margin of lower caudal lobe 2 to 2^; length 32^ to 35^ inches. 

 Two examples from Italy (C. L. Bonaparte, No. 245). 



Also 2 dried skins without data, the larger 44^ inches long. 



HETERODONTIDiE. 

 Heterodontas japonicus (Dumeril). 



Head 5i; depth 7j; depth of head If in its length; width of head 1^; 

 height of first dorsal If; height of second dorsal 1^; height of anal If; 

 lower caudal lobe 1|; pectoral 4f ; tail 4|- in length of body; width of 

 pectoral H in its length. Color in alcohol deep brown with obscure 

 scattered brown spots on trunk, which are however rather sparse. 

 Length 28 inches. No data. 



Also jaw of another, from Japan in 1891 (Frederick Stearns). 



SCYLIORHINIDJB. 

 Foroderma stellare (Linnaeus). 



Head 7f to 8^; depth 8t to 14 ; snout 2^ to 2f in head ; eye 3f to 4f ; 

 width of mouth 2 to 2f ; interorbital space 2^ to 2f ; first dorsal 1^ to 

 1|; second dorsal 1| to 2^; anal If to 2^; caudal from origin of lower 

 lobe 3f to 4f in rest of body; length 6 to 18 inches. Eleven examples. 

 Italy (Bonaparte). Also 2 dried skins, Nos. ^ and ^, with same- 

 data. 



Two other dried skins without data. 



