92 U. S. P. R. R. EXP. AND SURVEYS—ZOOLOGY—GENERAL REPORT. 
In many of our animals of wide distribution, there appear to be several races, as far as dimen- 
sions are concerned, in particular species; skulls of the same relative age being different in 
size. This is particularly the case in the cats, racoons, bears, and deer, and, as a general rule, 
the further south we go, the smaller the species. This condition of things adds not a little to 
the confusion which prevails. The skulls vary much too with age, and probably also with sex, 
although the specimens before me not having the sex indicated do not afford the clue to the 
peculiarities of male or female. 
There appear to be at least three species of smaller American lynxes in North America—the 
common Bay Lynx, which reaches from the Atlantic to the Pacific, throughout nearly the whole 
latitude of the United States, but is replaced in Texas and southern California by the Lynx 
maculatus, and in northern Oregon and Washington Territory by the L. fasciatus. The precise 
limits of these last mentioned species, other than as indicated, has not yet been ascertained. 
The examination of a large number of well prepared specimens of different ages, sexes, 
seasons and localities, will, however, be necessary fully to unravel the perplexities which now 
encompass the whole subject. 
Measurements. 
1588. | 1167. 
Eengthiof headsand body 22 Sect to sees asa Lee ss 283 | 27 
Tailist eos sashes Sit Ses See ee oo eee as ae soe i | Seen 
Beelitotendiot hind fo0ts = -—6- sche see see ee aspen ap a aaa 34 6} 
Hei hhint Sowden 2. ae ae ee ree ee | te | 15} 
| 
List of speeimens. 
Catalog’ e] Correspond’g | Age& Locality. When Whence obtained. [Nature of) Collected by 
number. | No. ofskulls. sex. collected. specimen 
1 il eR eae pap neg Cah Cha men meee tena |oeae ee seer 1S Pl hd 32 i a Skin. £3| 320 Joes 
2042 BOS? Wscaes Rowleysburg, Va. -.------|------------ A. Brakeley -...--..: 2ado05222/0 24. Era 
DOD Tees eae | See as GOs 252 BETES eG SEE EES do.2ivise.Jd.) fo th See 
B45 |5- een anne | peas Selma, Ala=s2- S22) =j<--2| on. seen sea- Prof.;A. Winchelll.--~|.<- <<< eeepeegee = pe 
GRO) aoa ee Sle ome, St. Johns miverjMla oo) os ae WW USAW ONY! ooo emia te eee oo 
Oo TY ee ae ee Brazoseriver: T6xag ie oa. -- ooo ea pene Capt. R.. B. Marcy 2. .|22- o-oo one 
On Ae ee ees EE Fort Chadbourne, Texas .-|....--.---.- Dr. . Bu Swiftstes. o22-|see Seelee lease eee 
162) seep te Fort Pierre, Neb--.------|----------=- Lt. G. K. Warren....|-------- Dr.F.V.Hayden. 
1sto |lecteccasene= cee Great Bend of Missouri---| Oct. 10,1856 |_..._- 3 Caan See ae 9 alee 2) | tense dobeenae 
RBLGM Ses: SMI eel 2at se Adlstd. see eee eu etdOsesest|sseees do- S22 LPP a ea8 ec doz 2322 
1844 Seay 2 vw Mouth of Big Sioux -...-- Oct. 28, 1856 |___..- Mose ew eee =e d6ns.52 
PABRSI te be ses | @ | San Diego, Cal...-...---- Feb. 2, 1856| Dr. J. F. Hammond.--|.--.----|_---.---------- 
F5E9 | pwatgsth tba) sactreale tha. dies 4 ee ee |. sdode cea tees oueen el. 20S) = ee 
ny | ese eee = ee Santa Clara, Cal ......... Nove 1865,-.| Dr.iJ, 'G. Cooper-__--|-.-.<-2-|<2-cb-seseeeee 
CU aes ae ae Presidio, near San Fran- |.....-.----- Lt. W. P. Trowbridge -|-.----.- [ee eS eco: 
cisco. 
660 1876 | Gi DORCEG, pCR) aman mne eee = eee sen eee oe G0ccceaseces cel eee eee T. A. Szabo... 
169" 15-2 ase oes Vp e a a yey Spe ph I, foes eee Dr: J. Livans.. oc .226)5. Se eee eee 
13864|.22 222328 | Ey ls Plum (Spring; Towa st 225 s|-s-2ce-.c--e Be ? Qdell col. 3282S ee waseudt se becee 
