28 THE AMERICAN BISONS. 
Explanation of Table V. 
Bison latifrons. Specimen from Natchez, Mississippi. (Measurements from Leidy.) 
Bison antiquus. Specimen from Pilarcitas Valley, California. (Measurements from Leidy.) 
Bison antiquus. Alameda County, California. (Nat. Mus., No. 8,270.) 
Bison antiquus. California. (Prof. Whitney’ s Collection.) 
Bison antiquus. Darien, Georgia. (Dr. Harlan’s measurements.) 
Bison priscus. Specimens from Mannheim, Germany. (Measurements from Meyer.) 
NO oO PWN 
Bison americanus. Specimens from Big-bone Lick, Kentucky. 
In the Museum of Comparative Zoélogy are two jaw fragments from Cali- 
fornia belonging to Prof. J. D. Whitney. One of these is 14 mm. in length, 
and contains portions of two of the premolars and of the true molars. Its 
height at the last molar is but little greater than the corresponding measure- _ 
ment in a very large old male B. americanus (see Plate III), but its thickness 
at the same point is nearly one third greater. The other fragment is 
18 mm. in length and embraces the portion of the jaw between the inner 
angle and the first true molar. This belonged to a much smaller animal, 
perhaps a female, but is still very much larger than the corresponding part 
in the largest old males of B. americanus (see Table VI). 
TABLE Vi. 
MEASUREMENTS OF THE LOWER JAW. 
Exireme length trom tipte angle. = AQ0| sales 
a at ‘the ANGIG ee ee Q00N ee eee. 
lo a ee 76| 780} 800 90 
first premolar 7. 0 
Thickness ae mola. 23| 40) 360 
second molays...-.8. 8 Ses ele ous Atco. 
‘ (fst premolars. -0. 6 QA\ 2%) 200). 2a. 
Citeumerence . fed ee Be ee ee 185). le 
* firs MOWER ee 195) lg 
Length of = alveaat space OL Molats) 152). oc |oes 195)*165 
iis Grie eh es jrorejeens fooee Ti. 
* First premolar added by estimate. 
Explanation of Table VI. 
1, Old male Bison americanus. 
2. Fragment from California (Whitney’s Coll.), 14 mm. long, containing portions of two premolars and 
portions of the three true molars. 
