26 THE AMERICAN BISONS. 



described species of Bison, it apparently differs but little in size from the true 

 Bison priscus of the Old World. 



TABLE IV. 



Measurements of Horn-cores and Skulls of existing and extinct Forms of Bison. 



Distance from mesial plane of occi- 

 put to tip of either horn-core.'. 

 Distance between tips of horn-cores 

 Dist. between bases of horn-cores 

 Least width of forehead (between 



orbits and horn-cores) 



si width of occiput 



L'gth of hom-core along upper A<\r 

 Circumference of horn-core at base 

 Circ. of hom-cores 14 in. from base 



295 



S60 ■''25 



320 

 647 



290 285 260 277 270 278 

 - 245 245 273 258 . . . 

 270 260 210 170 196 190 . . . 

 . 215 300275 245 211 240818 







320 



470 



392 355 430 



336 



:;.i2 



245 . . . 336 



370 



o 



°i ? r 



. ... 380 

 297 

 514 



■ 

 ■'. 30 



'.■'445 

 307 



1932 

 407 



813 

 •510 



* Estimated. 



Explanation of Table IV. 



1. "Bison priscus?" Rich. Specimen No. 24,589, Zobl Voy. of Herald, p. 35. (Measurements from 



Richardson.) 



2. '• Bison priscus! " Rich. Specimen No. 105, Ibid., p. 35. (Measurements from Richardson.) 



3. Bison anliquus. Specimen from St. Michael'-, Alaska. 



4. Bison americanus. Big-bone Lick, Kentucky. (M. C. Z., No. 2050.) This specimen has the 



lamest horn-cores I have met with in any specimen of Bison americanus. 



5. Bison americanus. Big-bone Lick, Kentucky. (M. C Z, No. 2047.) 



6. Bison americanus, adult male. Specimen No. 91, Mus. Com].. Zoology. 



7. Bison bonasus, adull male. Specimen No. 195, Mus, (' p. Zoology. 



g "Bison era »,** Rich ' ' Beechey'a specimen, Zool. Voy. of IleraM, p. 41. (Measure- 



ments from Richardson.) 



9. •' Bison crassicornis," Rich. Specimen No. 91, — the large horn-core figured and described by Rich- 

 ardson, I. c. p 12. Said to have hecn .- .what reduced in size by abrasion. (Measurements from 



Richardson.) 



10. Bison anliquus. Specimen collected by Mr. W. II. Dall on the Tatlo River, Alaska (No. 



the National Museum). 



11. Bison anliquus Leidy. Original specimen from Big-bone Lick. 



12. Bison until/mi*. Specimen from California, described bj Dr. Leidy. 

 13./;. Meyer. Specimen Na 7 of Meyer's Memoir, L c 



14. Bison lalifront Leidy. i Dal specimen. 



15. Bison latifrons. Carpenter's specimen from Ti - 



16. /■' kd * . ' (hia 



From the above measurements it appears thai the horn-cores of B 



/;. antioum, female) are very much larger than those of even 

 the males of either Bison americanus <>i Bison bonasus, bu\ the specimens do 

 nut appear to be in other respects largei . the horn-cores ol " B ■ 



