No. 2328. PLEISTOCENE VERTEBRATES IN UNITED STATES— HAY. 89 



and with the teeth of Tapirus veroeiisis^ as described by Sellards.^ 

 The following measurements are presented. The figures in paren- 

 theses represent the widths of the hinder lobe of the first upper molar 

 of the three species. 



MEASUEEMENTS OF TEETH OF TAPIRS IN MILLIMETERS. 



Second premolar: 



Leiieth 



Width 



Third premolar: 



Length 



Width 



Fourth premolar: 



Length 



. Width 



First molar: 



Length 



Width 



Rficond molar: 



Length 



Width 



Third molar: 



Length 



Width 



Upper teeth. 



T. ter- 

 restris. 



T. ver- 

 oensis. 



T. tenii- 

 esseae. 



T. ter- 

 restris. 



T. ver- T. tenn- 

 oensii. 



IS 

 18.5 



21 

 23 



19.5 

 24.5 



21 



22 (20) 



23 

 25.5 



22 

 24 



18.5 

 23 



19 

 24 



20 

 26 



2L9 

 26(16.7) 



24 

 28 



22.5 



(22. 5; 



26 



25 

 29.3 



It will be observed that all of the upper teeth of the Tennessee 

 specimen are smaller than the corresponding ones of T. veroensis; 

 we may hence conclude that they probably belonged to a smaller 

 species. One of the striking characters of the upper teeth of Sellards' 

 species is the size of the parastyle, this being nearly as large as the 

 paracone. In the case of the teeth here described the parastyle is 

 relatively weak. There appears to have been no exterior cingulum 

 in the upper teeth; nor is there any tubercle between the paracone 

 and the metacone. Likewise the inner tubercle is weak in the Tennes- 

 see teeth, but large in T. veroensis. The ridge which descends from 

 the summit of the paracone to the bottom of the median valley ap- 

 pears to be considerably weaker than it is in T. veroensis. It seems 

 to be safe to regard the tapir under consideration as distinct from 

 T. veroensis. 



Excepting the second molar, of which only the front border is 

 missing (pi. 3, fig. 5), the upper teeth are all smaller than the 

 corresponding ones of T. ten'-estri-s. On the other hand, the most of 

 the lower teeth are somewhat larger. The second lower premolar 

 (pi. 3, fig. 6), is shorter than in T. terrestris, but its hinder lobe is 

 damaged. At the middle of this tooth the thickness is 12 mm. ; in 



Tenth and Eleventh Ann. Rep. Fla. Geol. Surv., 1918, p. 57, pis. 1-4. 



