Sellards — Ghlamytherium septentrionalis. 143 



including dermal scutes and one right lower jaw from near 

 Vero, Florida, it now appears that tlie Florida specimens 

 pertain not to C. humboldtii, but to a species distinct from the 

 South American forms. Moreover, after direct comparison of 

 the scutes, I am convinced that the new material from Florida 

 is specifically identical with that to which Leidy originally 

 applied the name Glyptodon septentrionalis. It becomes 

 necessary, therefore, to revive Leidy's specific name, the 

 species, however, being referred to the genus Ghlamytherium 

 and not to Glyptodon. 



The material now known from Florida representing the 

 species and on which the following description is based 

 includes the following : One right lower jaw found near 

 Vero, collected by Frank Ayers and presented to the State 

 Geological Survey by Isaac M. Weills; also a number of 

 dermal scutes from the same locality ; twenty-four dermal 

 scutes from Peace Creek collected by Joseph Willcox and now 

 in the collection of the "Wagner Free Institute ; also one plate 

 from the movable band obtained by Mr. Willcox from 

 White Beach, Sarasota Bay ; one dermal scute from Peace 

 Creek in the collection of the IJ. S. National Museum, 

 and two dermal scutes taken from Peace Creek by Mr. S. A. 

 Robinson. In addition the Yarman collection of Yanderbilt 

 University contains several scutes of Ghlamytherium obtained 

 from the Hillsboro River, Florida. The jaw and scutes from 

 Yero may not be from a single individual, although they 

 repi"esent with little doubt a single species. 



The deposits from which the Ghlamytherium septentrionalis 

 is obtained are of Pleistocene age. The fossils associated with 

 this species at the locality near Yero include Equus, Elephas, 

 Mammut americanum, Megalonyx, Tapirus, and Odocoileus, 

 the fauna as well as the conditions of deposition indicating late 

 Pleistocene. The Peace Creek beds include the same fauna 

 although with these is associated some earlier forms, most if not 

 all of which have washed in from the Pliocene and older 

 formations through which the river has cut its channel. The 

 specimens from the Hillsboro River and from White Beach 

 are doubtless of the same age as those from Yero and Peace 

 Creek. 



The writer acknowledges his indebtedness to the officials of 

 the Wagner Free Institute, the National Museum and the 

 American Museum for the opportunity and facilities afforded 

 of comparing specimens of this and related species. 



Chlamytherium septentrionalis (Leidy). 



Glyptodon septrionalis Leidy, Acad. Nat. Sci., Phila., Proc, 

 p. 97, 1889. 



Chlamydotherium humboldtii, Lund, Leidy, Wag. Free Inst. 

 Sci. Trans., vol. ii, pp. 24-25, 1889, U. S. Geol. Survey, Bull. 84, 

 p. 129, 1892. 



