No. 2391. DESCRIPTIONS OF PLEISTOCENE VERTEBRATA—IIAY. 637 



It will be seen that the fossil animal was apparently a somewhat 

 larger one than that with which it is here compared. If this is 

 taken into account, some differences are not so great as they ap- 

 pear to be. The second premolar of the fossil would be relatively 

 of about the same length as that of the living species; the fourth 

 premolar somewhat longer, the first molar considerably longer. On 

 the other hand, the roots of the teeth, probably the crowns also, 

 would be relatively thinner. 



In size of jaw and length of teeth the fossil species resembles 

 more Croatia crocuta. The crowns of the teeth appear to have 

 been thinner than in either of the living species. Although the 

 teeth of Crocuta are larger than those of Hyaena the jaw is but 

 little longer. 



Besides the parts described above, there is a root of a large canine 

 which resembles closely the root of an upper canine of a hyaena, also 

 a left mandibular condyle which differs little from that of Hyaena 

 hyaena. It is possible that it belongs to the mandible forming the 

 type of the species here described, but contact between the two 

 fragments can not be established. 



Having described the species found at Anita it appears proper 

 to consider what may be learned from that assemblage. By far the 

 larger number of the species are such as are generally recognized as 

 belonging to the Pleistocene. While horses and true dogs (Canis) 

 may yet be found to occur in Pliocene deposits, it is not yet 

 proved that they do so occur. The preservation of the bones 

 and teeth in a limestone cave itself indicates that they belong to 

 the Pleistocene; yet among these Pleistocene animals are found 

 remains of two camels which it seems necessary to refer to the 

 genus Procamelus. Members of this genus have not usually 

 been recognized as having existed at a later time than the early 

 Pliocene. In 1916 ia Dr. E. H. Sellards referred to the apparent ad- 

 mixture of Pliocene and Pleistocene species that had been observed 

 in the Dunnellon (Alachua) formation in Florida. Among the 

 fossils were three species of Procamelus — P. major, P. minor, and 

 P. minimus. The two species of the same genus found at Anita 

 are so closely related to two of those from Florida, P. major and 

 P. minimus, that it was at first thought that they were the same. 

 The writer has briefly discussed this Florida case 20 also the finding 

 of similar mixtures of Tertiary and Pleistocene fossils in Idaho and 

 in Oregon. In these western localities, as well as in Florida, there 

 have occurred, it has been supposed, either in the deposits or in the 

 collections, accidental minglings of fossils of two distinct formations. 

 At Anita, however, there can have happened nothing of the sort, 



19 Eighth Ann. Rep. Fla. Geol. Surv., p. 94. 

 « Amer. Journ. Sci., ser. 4, vol. 47, p. 373. 



