PROTOBALAN A—PROTOCYON. 581 
Protobalena Lripy, 1869. Cete, Baleenidee. 
Syn. Extinct Mamm. N. Am., in Journ. Acad. Nat. Sci. Phila., 2d ser., VII, 
440-441, 1869. 
Type: Balena palxatlantica Leidy, from the Miocene of City Point, Prince George 
County, Virginia. 
Extinct. *'Founded on a jaw fragment, accompanied by several vertebrze." 
Name preoccupied by Protobalena Du Bus, 1867, a distinct genus of Baleenidee. 
Replaced by Rhegnopsis Cope, 1896. 
Protobalena Harcken, 1895. Cete, Baleenide ? 
Syst. Phylogenie Wirbelth., III, 466, 566, 1895. 
Hypothetical genus; apparently the supposed ancestor of the whales. 
Name preoccupied by Protobalena Du Bus, 1867, a genus of extinct whales from 
the Antwerp Crag, Belgium; and by Protobalena Leidy, 1869, from Virginia. 
Protobradys AwEauriNo, 1902. Edentata, Brady podid:ze (Protobradydze). 
Bol. Acad. Nac. Cien. Córdoba, XVII, 49-50, May, 1902 (sep. pp. 47-48). 
Type: Protobradys harmonicus Ameghino, from the Notostylops beds, Patagonia. 
Extinct. 
Protobradys: z&rosc, first; bpadvs, slow—i. e., a primitive sloth. 
Protocamelus Lripy, 1873. Ungulata, Artiodactyla, Camelidee. 
Rept. U. S. Geol. Surv. Terr., I, 317, 1873. 
Emendation of Procamelus suggested, but not adopted. 
Extinct. 
Protocamelus: zp&ros, first; + Camelus. 
Protoceras MansuH, 1891. Ungulata, Artiodactyla, Protoceratidee. 
Am. Journ. Sci. & Arts, 3d ser., XLI, 81-82, Jan., 1891. 
Type: Protoceras celer Marsh, from the Oreodon beds of the Oligocene of South 
Dakota. 
Extinct. Based on ‘a single skull . . . in good preservation, except the 
extremity in front, which is broken off and lost.’ 
Protoceras: z&rosc, first; Képas, horn. 
Protocherrus Lr Contr, 1848. Ungulata, Artiodactyla, Tayassuid:e. 
Am. Journ. Sci. & Arts, 2d ser., V, No. 13, pp. 105-106, Jan., 1848. 
Protocheirus GERvAIS, Hist. Nat. Mamm., II, 242, 1855. 
Type: Protocherus prismaticus Le Conte, from the Pleistocene of Illinois. 
Extinet. Based on ‘the first and third molars and a canine, all from the 
lower jaw.’ 
Protocherus: mp@vos, first; yotpos, hog. 
Protochriacus Scorr, 1892. Creodonta, Oxycleenidee. 
Proc. Acad. Nat. Sci. Phila., Nov. 15, 1892, 296; LvpEÉKKER, Zool. Record for 
1892, Mamm., 31, 1893 (type fixed). 
Species: Chriacus priscus Cope (type), and Chriacus simplex Cope, from the 
Puerco Eocene of New Mexico. 
Extinct. 
Protochriacus: zp&roz, first; -+-Chriacus. 
Protocyon GirBeL, 1855. Ferze, Canidze. 
Die Sáugethiere, 851, 1855; 2d ed., 851, 1859. 
New name for Pal:ocyon Lund, 1843, which is preoccupied by Palxocyon Blain- 
ville, 1841, a genus of Creodonta. ‘‘ Der von Lund eingeführte Gattungsname 
Palzocyon musste durch einen neuen ersetzt werden, da derselbe yon Plainville 
für einen Birenhund angewandt worden." (GIEBEL. ) 
Extinct. 
Protocyon: mp@cros, first; xvcv, dog. 
