North American Species of Petromyzontidcs. 293 



This small species seems to be chiefly contined to the fresh wa- 

 ters along the Pacific Coast. The specimens before us are about 

 7 inches in length, and come from near Walla Walla, where they 

 were collected by Capt. Charles Bendire. 



There seems to be no doubt that the Ammoccetes cibarius of 

 Girard is simply the larva of this species. The older name, plum- 

 beus, cannot be retained, as the name Petromyzon plumbeus was 

 long ago given by Shaw to another species. 



8. -ammoccetes branchialis. 



European Synonymy. 



Petromyzon pinna dorsali posteriori lineari, etc. Linnaeus, Fauna Suecica, 274 



(larva). 

 Petromyzon branchialis Linnaeus, Syst. Naturae, X, 1758, 230 (based on the 



Fauna Suecica,) and of late authors. 

 Ammocmtes branchialis Cuvier, Regne Animal, 1827, and of many authors. 

 Petromyzon planer i Bloch, Fische Deutschlands, III, 47, about 1785, and of 



many authors. 

 Le Petromyzon rouge* Lacepede, Hist. Nat. Poiss., II, 99, f. 1, 1798 (Rouen ; 



larva). 

 Le Petromyzon sucet* Lacepede, op. cit., II, 101, 1798 (Rouen \ 

 Petromyzon septandl Lacepede, op. cit., IV, 667, 1803 (Rouen). 

 Petromyzon niger Lacepede, op. cit., IV, 667, (Louviers). 

 Petromyzon bicolor Shaw, Gen'l Zool., V, 2, 263, 1805. 

 Petromyzon plumbeus Shaw, 1. c. 



Petromyzon lumbriealis Pallas, Zoogr. Rosso- Asiat., Ill, 69, 1811 (larval. 

 Petromyzon ccecus Couch, " Lond. Mag. Nat. Hist., V, 23, f. 10" (, larva). 



American Synonymy. 



Petromyzon nigrum Rafinesque, Ichth. Ohiensis, 1820, 84 (near Falls of Ohio). 

 Petromyzon niger Jordan, Man. Vert., Ed. I, 1876, 315. Nelson, Bull. Ills. 



Mus. Nat. Hist., I, 1876, 52. (Not of Lacepede.) 

 Ammoccetes niger Jordan, Ann. N. Y. Acad. Sci., 1877, 120 (Fox R. , 



Peckatonica R., White R., Rock R., Wabash R.). Jordan, Bull. 



Ills. Lab. Nat. Hist., 1878, 70. Jordan, Man. Vert., Ed. 2, 1878, 349. 



Jordan, Zool. Ohio, 1882, 756. Jordan & Gilbert, Syn. Fishes N. A., 



1882, 9. 

 Ammoccetes cepypierus Jordan. Cat. Fishes N. A., 1885, 4 (not of Abbott). 



* To these species, only French names were given by Lacep&de. The 

 Latin names, P. ruber, and P. sanguisuga, were supplied by later writers. 



