ADDENDA 7. CARCHARIID.E GALEORHINUS. 



871 



Page 21, After GaleorJiinus add the reference: 



(Blainville, Prodrome Faune Frangaise, Poiss. i, 85, 181G.) 



It is probable that our species is really distinct from the European. 

 It may be characterized as 



23. <J. zyopterns* J. & G. sp. riov. Oil Shark. 



Dusky grayish; most of pectoral, tip of caudal, and anterior portion 

 of both dorsals black. Snout depressed, rather long, but rounded at 

 tip; nostrils considerably nearer mouth than tip of snout; the anterior 

 lobe with a small pointed tip; interorbital space a little less than length 

 of snout; teeth about f |, the four or five teeth nearest the middle of the 

 jaw much smaller than the others; median tooth of each jaw smallest, 

 subtriangular, without basal cusps; lateral teeth of both jaws similar, 

 with their poiuVs strongly directed outwards; a sharp angle near the 

 middle of the outer margin, below which are 2 to 5 sharp cusps or ser- 

 rations; labial folds moderate. Eye large, the small spiracles sepa- 

 rated from it a distance about equal to its diameter. Head with many 

 mucous pores. Distance between angles of mouth nearly twice length 

 of mouth, and equal to length of snout from mouth. Pectoral fin mod- 

 erate, reaching somewhat beyond front of dorsal, its tip somewhat 

 pointed, its free edge concave. Middle of first dorsal nearly midway 

 between pectorals and ventrals, its anterior lobe rounded, posterior, 

 acute; second dorsal scarcely one-fourth as large as first, a trifle larger 

 than anal, which is inserted slightly farther back. 



Measurements of a large example, 63 indies in length, from San Pedro, California, 



Length 100. 



Greatest depth 14. 



Length of head 18. 



Length of snout (from mouth) 7. 5 



Length of snout (from eye) 8. 



Width of mouth 7. 



Length of spiracle 0. 7 



Length of eye 2.5 



Distance from snout to first dor- 

 sal 3. 3 



Length of base of first dorsal 7. 3 



Height of first dorsal 7. 5 



Distance between dorsals 2.5 



Length of second dorsal 4.5 



Height of second dorsal 4. 



Length of anal 3.5 



Length of caudal 21. 



Distance from pectorals to ventrals. 25. 



Length of pectorals 15. 



Length of ventrals . . . 4.5 



Coast of Southern California, from San Francisco to Cerros Island, 

 extremely abundant. Valued for the oil in its liver, and for the fins, 

 which are much prized by the Chinese, the gelatinous fin-rays making 



a fine soup. 



(Galeorhinns galeus Jordan & Gilbert, Proc. U. S. Nat. Mus. 1880, 42, and 1881, 18: 

 typical specimens have ben distributed by the National Museum as Nos. 26927, 



; soup; itrepov, I'm. 



