NO. 5 CHECK-LIST OF FOSSIL BIRDS — WETMORE 9 



Colymbus parvus Shufeldt 

 Colymbiis parvus Shufeldt, Bull. Amer. Mus. Nat. Hist., vol. 32, art. 6, 

 July 9, 1913, p. 136, pi. 39, fig- 477- 



Pliocene (Tulare formation) : Kern County, California. Middle 

 Pliocene (San Diego formation) : San Diego, California. Late Pleisto- 

 cene: Fossil Lake (type locality), Oregon. 



Genus PLIODYTES Brodkorb 



Pliodytes Brodkorb, Ann. Mag. Nat. Hist., ser. 12, vol. 6, December 1953, 

 p. 953, I fig. Type, by original designation, Pliodytes lanquisti Brodkorb. 



Pliodytes lanquisti Brodkorb 

 Pliodytes lanquisti Brodkorb, Ann. Mag. Nat. Hist., ser. 12, vol. 6, December 



1953, P- 953, I fig- 

 Pliocene (Bone Valley formation) : Near Brewster, Polk County, 



Florida. 



Genus AECHMOPHORUS Coues 



^chmophorus CouES, Proc. Acad. Nat. Sci. Philadelphia, vol. 14, No. 5, April- 

 May (Aug. i), 1862, p. 229. Type, by original designation, Podiceps occi- 

 dentalis Lawrence. 



Aechmophorus occidentalis (Lawrence) : Western Grebe 



Podiceps occidentalis Lawrence, in Baird, Cassin, and Lawrence, Rep. Expl. 

 and Surv. R. R. Pac, vol. 9, 1858, pp. liv, 892, 894. 



Modern form reported from late Pleistocene : Rodeo, San Francisco 

 Bay region. 



Aechmophorus lucasi Miller 



Aechmophorus lucasi L. H. Miller, Univ. California Publ., Bull. Dept. Geol., 

 vol. 6, No. 4, Feb. 4, 191 1, p. 83, figs. 1-3. 



Late Pleistocene: Fossil Lake (type locality), Oregon;^ Palos 

 Verdes sand, New^port Bay, Orange County, Playa del Rey, San 

 Pedro, Los Angeles County, and near Manix, San Bernardino County, 

 California. 



'' Includes various specimens formerly listed under Colymbus grisegena and 

 Aechmophorus occidentalis. Hildegarde Howard (Carnegie Inst. Washington 

 Publ. 551, Jan. 25, 1946, pp. 148-151) considers lucasi the Pleistocene ancestor 

 of modern A. occidentalis, listing it as Aechmophorus occidentalis lucasi, the 

 relationship being expressed in the sense of distribution through time rather 

 than in the geographic sense of subspecies existing simultaneously. 



