ORNITHOLOGICAL NOTES FROM THE SOUTH. 85 
processes on each ramus of the mandible; the cervical vertebrie 
flat; the femur without a third trochanter ; and an additional toe 
in each foot. 
Among the features which this group shares with the Probos- 
cidea may be mentioned: the superior extension of the condylar 
ridge of the humerus; the short thick toes; and the late union of 
the epiphyses with the centra of the vertebrae. The last character » 
appears to belong especially to mammals of very large size, and 
probably indicates late maturity, and great longevity. 
_ The preceding description makes it evident that the Bronto- 
theridæ constitute a very distinct family of the . Perissodactyla. 
While retaining some prominent features of their Eocene prede- 
cessors, the Dinocerata, they are more nearly related to the 
Rhinoceros family, and at the same time they have some char- 
- acters allying them to the Proboscidea, which ee them in the 
succeeding, Pliocene period. 
All the known remains of the Brontotiona are frou east of 
the Rocky Mountains, in the Miocene beds of Dakota, Nebraska, 
` Wyoming and Colorado. The specimens here described are 
mainly from localities in the “Bad Lands” of Colorado, which 
were discovered and explored by the writer in the summer of 
1870.* 
EXPLANATION OF PLATES. 
Plate i. Brontotherium ingens Marsh. Side view. One-sixth natural sıze. ` 
Plate ii. Brontotherium ingens Marsh. Top view. One sixth natural size. ‘ 
ORNITHOLOGICAL NOTES FROM THE SOUTH. 
BY C. H HART MERRIAM. ' 
ita FLORIDA. 8 
TR was in Florida but a few days and aie most of the 
ew opportunities were a r de l satisfactory notes 
l e to the breeding habits, ete., of many of the birds observed 
there. The route followed was up the St. John’s river to Palatka 
and ana hence up its ee tributary, the Ocklawaha Hr. for a 
oi * Amer. Jour. Sci. vol. iv p. 2023, Sept 1870. : 
