122 BULLETIX 'iG, UNITED STATES NATIONAL MUSEUM. 



Table of measuroneiits. 

 PHOCJENA COMMUNIS. 



PHOC^NA SPINIPINNIS Burmeistor. 



riwcama sjjr«»j;iM2H's, Burmeister, Proc. Zool. Soc. London, 1865, p. 228; An. Mus. 

 Piib. Bneuos Aires, I, 18G4-69, pp. .380-388, Pis. xxiii-xxiv. 



No one wbo has read Dr. Burmeister's description of this species and 

 compared his measurements and figures with those of P. communis can 

 doubt its distinctness. The black color, the pecub'ar form of the dorsal 

 fin and its position, the large size of the pectoral fins, and the small 

 number of teeth, are all characters which it is impossible to set aside. 



