432 LEPUS. 
Geogr. Distr. Through Mexico to Tehuantepec. 
Genl. Char. Size large; similar to L. texensis Waterh., but the 
black on tips of ears almost obsolete, quite so in some specimens, 
the tips being pale yellowish or white. 
Color. Above yellowish brown, mixed with black; sides paler; 
rump and thighs whitish ash, lined with black, and a black line in 
center of rump; nape black in summer; pectoral collar and throat 
pale brownish yellow; rest of under parts and hind feet white; outer 
surface of fore legs ashy gray, lined faintly with black; whitish spot 
on head; ears brownish yellow with yellowish white edging, usually 
white at tips; tail above black, beneath brownish gray. 
Measurements. Total length, 560; tail vertebra, 57; hind foot, 
142; ear, height posteriorly, 137. Skull: total length, 47.5; greatest 
width, 44.5; interorbital constriction, 23; length of nasals, 45; pos- 
terior width of nasals, 46; length of upper molar series, 14; length of 
lower jaw, 67; height of lower jaw, 33. 
448. merriami (Lepus), Mearns, Proc. U. S. Nat. Mus., 1896, 
p. 444. Elliot Syn. N. Am. Mamm., 1gor1, p. 289. 
texensis, Aud. & Bachm., N. Am. Quad., 1, 1853, p. 156, pl. 
CXXEIMI. 
MERRIAM’S JACK RABBIT. 
Type locality. Fort Clark, Kinney County, Texas. 
Geogr. Distr. Northern Mexico near boundary line and “ Lower 
Gulf Coast to mouth of the Rio Grande, and up that stream to mouth 
of the Devil’s River.”’ 
Genl. Char. Similar to L. callotis; ears shorter and tipped with black. 
Color. Above grayish fawn mixed with black; nape black; sides 
of rump, thighs, and legs grayish white, lined with black; a black 
line on middle of rump; gular area clay color; rest of under parts 
white except a cream buff patch on sides of abdomen, such as are 
usually seen before the thighs; tail above black, beneath white; ears 
on anterior surface yellowish brown, mixed with black, the border 
buff, succeeded by a narrow black line; inner surface with base and 
tip black, intermediate space grayish white; inside ears buff with an 
elongated black patch near outer edge; the border is white at base, 
then buff, and black at tip. 
Measurements. Total length, 570; tail vertebre, 75; hind foot, 
123; ear from crown, 142. Skull: occipito-nasal length, 90; Hensel, 
72; zygomatic width, 41; interorbital constriction, 26; median length 
of nasals, 31; posterior width of nasals, 20.5; length of frontals, 37; 
of parietals, 18; palatal length, 9.5; length of lower jaw from tips of 
incisors, 71; height at condyle, 37. 
