1908.] NATURAL SCIENCES OF PHILADELPHIA. 59 



everywhere minutely roughened. Origin of first dorsal nearly 

 midway between tip of snout and origin of second dorsal, 

 apex of fin falling about midway in its length, and posterior pointed 

 flap equals eye horizontally. Origin of second dorsal a little nearer 

 that of first dorsal than last caudal vertebra. Anal with its apex 

 about opposite its posterior basal margin. Upper lobe of caudal 

 begins a little after that of lower, and its distal expansion about 2|- 

 in its length. Lower caudal lobe a" little elevated in front, and its 

 height about 3f in its length. Pectoral reaches f to ventral. Ventral 

 inserted a trifle nearer origin of pectoral than posterior basal margin of 

 anal, and reaching a trifle more than half-way to anal. Color in 

 alcohol with under surfaces^of pectorals and ventrals grayish, other- 

 wise fins of more or less uniform tint of back. Iris pale yellowish- 

 brown, pupil dusky. Length 12i inches. No. 21,104, A. N. S. P., 

 type of M. mento Cope. Pacific Ocean at Pecasmayo, Peru (J. Orton). 

 Coll. of 1876-77. From Cope. 



Triakis felis (Ayres). 



Santa Barbara (U. S. F. C), Cal. 



I adopt Mustelus felis Ayres for this'species, as his name has evident 

 priority. His paper** was read December 4, 1851, which is in the 

 signature dated December 25. This was received by the Academy of 

 >fatural Sciences of Philadelphia on February 6, 1855.^° T. semi- 

 fasciatus Girard occurs in No. 6 of the same volume,^" which was else- 

 where" not acknowledged as having been received until February 20, 

 1855, and therefore this date may be accepted for its publication. 



Galeorhinus galeus (Linnaeus). 



Head 57; depth about 8-^; snout about 2^ in head; eye 5; length of 

 mandible 3; width of mouth 2^; tip of snout to mandible 2f ; inter- 

 orbital space 2j; front margin of first dorsal ly^^; of second dorsal Sf; 

 of anal 4f ; least depth of caudal peduncle about 5; pectoral If; ventral 

 3f; length 17f inches. Italy (Bonaparte, No. 254). The other three 

 examples are all smaller, the smallest 9 inches long and showing the 

 attachment of the placenta still in good preservation. These were 

 confused as Galeus mustelus by me, as already explained. 



Also a dried skin, without data, 44 inches long. 



« In Proc. Cal. Acad. Sci., I. 



*° See Proc. Acad. Nat. Sci. Phila., VII, p. xxii, in donations to the library. 



*^ New York Lye. Nat. Hist. 



