678 The American Naturalist, [July, 
This species is readily distinct from T. triunguis by its oval tectiform 
carapace. The additional vertebral shield between the fourth and fifth, 
seen in both the British Museum specimens, is present also in the specimen 
received from Dr. Herrera. , 
TERRAPENE TRIUNGUIS AG., 1857. 
Syn. Emys kinosternoides Gray. 
Quadratojugal rudimentary, only connected with quadrate; cervi- 
cals somewhat shorter than in T. major ; scapula asin T. major ; no web 
- between the digits, and only three claws in the hind foot. Shell as in 
T. carolina L. 
Number of phalanges in fore-foot, 23 3 220r 23 32 1 ; in hind 
foot, 2 3 3 2 1. 
Louisiana, Arkansas, Indian Territory, Mississippi, Georgia. 
TERRAPENE ORNATA AG., 1857. 
` Quadratojugal absent; cervicals very short; upper branch of 
scapula of the same length as inner branch (endo-scapula); digits 
without distinct web. 
Number of phalanges of fore-limb, 2 2 2 2 2; of hind limb, 23331, 
Central States. Type from Upper Missouri, Iowa. 
—G. Baur, University of Chicago. 
