Catathlaeus, Properiptyclius, Ectogonus, Argyrolambda, Heterolambda. 571 
Subfam. 2. Catatlilaeinae. 
989. f Catathlaeus, Cope, 1881; Matthew, 1899. 
Catathlcms et Periptychus, Cope, 1881 (nec Periptyches , Grube, 1873). 
Periptychus, Auct., et Trt., 1897 — 99. 
Cope, Amer. Natur. 1881, p. 337 ( Periptychus ), et p. 829 {Catathlaeus). 
5893. fcoarctatus, Cope — • {4472); Matthew, 
Am. Mus., 1899, p. 28 (nota). 
5894. frhabdodon, Cope — {4473); Ameghino, 
Aual. Mus. B.-Aires, 1904, p. 392, p. 512. 
5895. | carinidens. Cope — {4474). 
fEocaen. inf. Novo- 
Mexico. 
fEocaen. Novo- 
Mexico. 
fEocaen. Novo- 
Mexico. 
990. f Properiptyclius, Amegh., 1897. 
Periptychus, p.. Amegh., 1893. 
Ameghino, Bol. Inst. Geogr. Arg., 1897, p. 439. 
5896. f argentinus, Amegh. — {4475); id., Aual. f Cretae. Super. 
Mus. B.-Aires, 1904, p. 394, f. 514. Argentina. 
991. f Ectogonus, Cope, 1884. 
Conoryctes, p., Cope, 1884, p. 795. 
Cope, Amer. Natur., 1884, p. 795. 
5897. f ditrigonus. Cope — {4476); Ameghino, fEocaen. infer. 
Aual. Mus. B.-Aires, 1904, p. 394, f. 515. Novo-Mexico. 
992. f Argyrolambda, Amegh., 1904. 
Ameghino, Anal. Mus. B.-Aires, 1904, p. 123. 
5898. f conulifera, Amegh., 1. c., 1904, p. 123, f Cretae. Super, 
fig. 140, 516. Patagonia. 
»conidens«, Amegh., 1. c., p. 395. » 
993. f Heterolambda, Amegh., 1904. 
Ameghino, Anal. Mus. B.-Aires, 1904, p. 67. 
5899. f lunulata, Amegh., 1. c., 1904, p. 67, f Cretae. Super, 
fig. 63, 517. Patagonia. 
994. f Josepholeidya, Amegh., 1901. 
Ameghino, Bol. Acad. Cordoba, 1901, p. 384. 
5900. f adunca, Amegh., l.c., 1901, p. 384; Anal. f Cretae. Patagonia. 
Mus. B.-Aires, 1904, p. 124, f. 142, 519. 
