66 PROCEEDINGS OF THE ACADEMY OF [April, 



dorsal reaching If to ventral, origin of anal slightly before that of 

 second doi-sal, and origin of ventral nearly midway between posterior 

 basal margin of first dorsal and origin of anal. 



Scoliodon laticaudus (Miiller and Henle). 



A small example, 7^ inches long. Straits of Malacca. It agrees 

 largely with Miiller and Henle's figure. 

 Scoliodon terrae-novse (Richardson). 



Bayport (Cope), Fla. 



Two dried skins, larger 38 inches long, are -evidently this species; no 

 data. 



SPHYRNIDiE. 

 Sphyrna tiburo (Linnseus). 



Newport (Powel) R. I.; St. Augustine (W. Blanding), Fla., in May, 

 1832. 



Sphyrna tudes (Valenciennes). 



Head 4|; depth 7; length of disk, along its posterior margin, | its 

 width transversely at second undulation; width of head just after 

 hammer 2-^-j^ in head; width of mouth about 3^; third gill-opening 

 5f; front margin of first dorsal 1^; length of second dorsal 2f ; of anal 2; 

 least depth of caudal peduncle 4; pectoral If; ventral 2|. Teeth in 

 about 26 series in' mandible. Color in alcohol plain pale brown, a 

 little darker on upper surface of body and paler or whitish on lower. 

 Fins all grayish-brown. Iris slaty. Length 8 inches. Surinam 

 (Hering). 

 Sphyrna zygsena (Linnaus). 



Nantucket (Sharp), Mass.; Sea Isle City (W. J. Fox), Holly Beach 

 (Miss Edith Ives) and Grassy Sound (Fowler), N. J. ; Surinam (Hering) ; 

 Panama (W. S. W. Ruschenberger) ; Italy (Bonaparte, 251); Padang 

 (Harrison and Hiller), Sumatra. Also 4 dried skins T\ithout data. 



Sphyrna bloohii (Cuvier). 



Head 6f ; depth about 9f ?; least width of head behind hammer If 

 in its length ; greatest width of hammer 2f in its length, measured along 

 its inner margin ; least width of hammer 4 ; space between tip of snout 

 medianly and margin of upper jaw about 3 in head; width of mouth 2; 

 length of third gill-opening about 4; base of first dorsal 1^; entire length 

 of second dorsal about 1|; base of anal about 2\; least depth of caudal 

 peduncle 3^; front margin of lower caudal lobe 1^; length of pectoral 1 ; 

 base of ventral 2f ; clasper If. 



Body long, slender, apparently little compressed, but rather rounded 



