IOO FLORIDA GEOLOGICAL SURVEY-EIGHTH ANNUAL REPORT. 
may be seen to be equally strongly developed; the carnassial teeth 
are of approximately the same size and present a general similarity 
in cusp arrangement. The jaw of the Florida species, however, is 
broader and the inferior margin is more strongly convex. A dif¬ 
ference is noted also in the relative development of the molar-pre¬ 
molar series, the molars occupying,relatively more, and the premol¬ 
ars actually and relatively less space than in that species. In gen¬ 
eral the Florida species would seem to have carried the line of 
specialization in this group beyond that indicated by the known 
European species. 
Although referred to the family Ursidae, these species are not 
directly ancestral to the modern species of that family, but repre¬ 
sent as indicated by the reduction in the number of premolar teeth, 
a collateral group of the family, their relationship to the Ursidae 
being comparable to the relationship of the amphicyons to the*Can- 
idae. 
The presence of Agriotherinm in America is of exceptional in¬ 
terest, and it is to be hoped that additional material may be ob¬ 
tained of this interesting fossil. 
CAMELIDAE. 
PROCAMELUS MINOR. 
From the Alachua clays Leidy described three species of cam¬ 
els which were designated by him as Procamelus major, P. medius 
and P. minor. From the Bone Valley formation few camels have 
been obtained, although during the past year a single specimen has 
been secured at the pit of the Amalgamated Phosphate Company. 
The bone obtained was a proximal phalanx and probably represents 
Procamelus minor, as it agrees in size with the specimen referred 
to that species by Leidy. The specimen is No. 6163 of the Florida 
Geological Survey collection. 
PLEISTOCENE. 
The marine Pleistocene is well represented in Florida and con¬ 
tains a large invertebrate fauna. The formations are best devel¬ 
oped on the Atlantic and southern Gulf Coast. A very large Pleis¬ 
tocene vertebrate fauna is found in Florida also, and occurs widely 
distributed throughout the State. 
