ALLEN : MAMMALIA : DASYPODID/E. 7 



dillos, it is most improbable that all these modern types should have 

 originated since that period. This confirms the conclusion indicated by 

 several other mammalian series, that in Miocene times Patagonia was 

 not the principal theatre of evolution of the South American fauna. This 

 would explain the entire absence from the Santa Cruz beds of many 

 types which would naturally be expected to occur there." 



Family DASYPODID^. 



Genus ZAEDYUS Ameghino. 



Zaedyus Ameghino, Contr. al Conoc. Mamm. fos. Rep. Argent., 1889, 



867. Type, Dasypus minutns Desmarest. 

 Dasypus, Auct., part. 

 Euphrachis, Auct., part. 



Zaedyus ciliatus (Fischer). 



(Plates I, Animal ; II, Skeleton ; III, Skulls.) 



Taton pic/iiy Az2iV2i, Quad. Paraguay, II, 1801, 192. 



Dasypus ciliatus G. Fischer, Zoognosia, III, 1814, 127. Based on " le 

 tatou pichiy Azara." 



Zaedyus cilliatus Allen, Proc. Biol. Soc. Wash., XIV, 183, Dec. 12, 1901 

 {'' cilliatus'' in error for ciliatus). 



Dasypus patagonicus Desmarest, Nouv. Diet. d'Hist. Nat, XXII, 1819, 

 491. Based on " le tatou pichiy, Azara." 



Dasypus minutus Desmarest, Mamm., ii, 1822, 371. Based on " le tatou 

 pichiy ou tatou septieme " of Azara, and hence = Dasypus patagonicus 

 Desm., 1 819. — Fischer, Syn. Mamm., 1829, 393. — Waterhouse, Voy. 

 Beagle, Mamm., 1839, 93- notes on distribution and habits by Dar- 

 win. —Turner, P. Z. S., 1851, 214. — Wagner, Schreber's Saug. 

 Suppl., IV, 1844, 177; V, 1855, 176.— Cassin, U. S. Expl. Exp. 

 (Wilkes), Mamm. and Orn., 1858, 54, Rio Negro, Patagonia.— 

 Prichard, P. Z. S., 1902, I, 277; Through Patagonia, 1902, 40, 67, 

 248 (distribution), 258. 



Tatusia ininuta Lesson, Man. de Mamm., 1827, 312. — Gray, Mamm. Br. 

 Mus., 1843, 190— Gerrard, Cat. Bones Mamm., 1862, 286. 



Dasypus {Euphractos) minutus Burmeister, Reise durch die La Plata- 

 Staaten, II, 1861, 427. 



