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26 



THE AMEEICAK BISONS. 



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



J, 



Bisoti prisciis of the Old AVorld. 



i jHiOiiU 



E 



CT 



ii 



1^ I I 



Measukements 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) 



Greatest width of occiput * 



L'gth of horn-core along upper side 

 Circumference of horn-core at base 

 Circ. of horn-cores 14 in. from base 



1 



420 



7G0 

 305 



» • 



V 4 



276 







295 



280 



270 



215 







360 



680 

 295 



290 



« « * 



260 



300 







4 



325 

 650 



300 



285 

 245 

 210 

 275 

 



300 

 565 



290 



260 

 245 

 170 

 245 

 



327 

 615 

 296 



277 

 273 

 196 

 244 

 



320 



647 

 278 



8 



270 278 

 258 

 190 

 240 

 



318 

 



10 



390 



320 



383 



? 



245 



263 







11 



4 « 



4 V 



^SJ^ 



13 



370 

 ? 



470 

 920 

 392 



336 

 332 

 336 



14 



1058 

 355 430 



a 4 



• 4 







380 



29 7 



514 



380 520 



? ,307 



15 



f fr 



?445 

 307 



16 



1932 

 407 



813 



*510 

 368 



* Estimated. 



Expfanatio 



e IV. 



^ 





5 



J 

 r 



\ 



1. ^^ Bison prlscus f Eich. Specimen No. 24,589, Zool. Voy. of Herald, p. 35. (Measurements from 



Richardson.) 

 2* ^^ Bison priscus f " Rich. Specimen No. 105, Ibid., p. 35, (Measurements from Richardson.) 



3. Bison antiquus. Specimen from St= Michael's, Alaska. 



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



largest 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 aniericanus, adult male. Specimen No. 91, Mus. Comp. Zoology, 



7. Bison honasus^ adult male. Specimen No. 195, Mus. Comp. Zoology. 



8. ^^ Bis 071 crassicornls/* ^idi. Capt. Beechey's specimen, Zool. Yoy. of Herald, p. 41, (Measure- 



ments from Richardson.) 



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



ardson, 1. c. p. 42. Said to have been somewliat reduced in size by abrasion. (Measurements from 

 Richardson.) 



10. Bison antiquus. Specimen collected by Mr. W. H. Dall on the Tatlo River, Alaska (No. 7529 of 



the National Museum). 



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



,12. Bison antiquus. Specimen from California, described by Dr. Leidy. 



13. Bison prisciis Meyer. Specimen No. 7 of Meyer's Memoir, 1, c. 



14. Bison latifrons Leidy. Peale's original specimen. 



, 15. Bison latifrons. Carpenter's specimen from Texas. 



r 



16. Bison latifrons. Adams Co., Ohio. 



J 



From the above measurements it appears that the horn-cores of Bison 

 ^^ prisciis ? '' {= B. antiquus^ female) are very much larger than those of even 

 the males of either Bison americanus or Bison lonasiiSy but the specimens do 

 not appear to be in other respects larger ; the horn-cores of " B, crassiconds " 



> 



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