LEPUS. x 431 
E. Macrotolagus. 
Interparietal obliterated in adults; skull twice as long as wide; 
postorbital processes large, arching, and united to cranium by a 
suture, and inclosing a wide and long foramen; nasals lengthened; 
upper front incisors without distinct lateral groove; ear longer than 
hind foot. 
hey TOE: SPECIES: AND SUBSPECIES: 
A. Ears very large, longer than hind foot. 
a. Ears black at base. 
a.’ Nape of neck black. PAGE 
a.’ Above yellowish brown and black....... L. callotis 431 
b.” Above grayish fawn and black........ L. merriamt 432 
Peete Mcntaceons: DULL 6. ee ee es es .L. gallardi 433 
Beeweme paler DOU sc tees cd ea ee wee Leg. batiya 433 
SG, GPW Sy bk gece os ec awed et ae ae L. allent 433 
Peevaiie, PRUTHMEOUS? 4.2. 52s oe we L. a. palitans 434 
b. Ears without black at base, fringed with 
white or yellowish white. 
a.’ Ears broccoli brown; nape grizzled black 
FI Ee ae ge ee ee L. asellus 435 
b.’ Ears grizzled black and brown; nape pale 
Reesor tee PIPE WI fain 4a  Winsdve eee on wen is 2 L.t. eremicus 435 
c.’ Ears brownish gray; nape grayish white. 
Beesrtsincl) SOOL, (TLS MWS =)... xs. «5.6 ween as L. t. griseus 436 
Merlige tcob, eed min.) a. os ec. ea a L. t. micropus 436 
d.’ Ears pale drab; nape pale yellowish 
Se i ie rg eg L. t. deserticola 437 
e.’ Ears dark brown; nape smoky gray; size 
Pree. ite foot: ROP min <2 ois. sss x L. californicus 437 
f.’ Paler and smaller; hind foot, 120 mm....... Ec. xantt 438 
g.’ Ears gray. 
a.’ Upper parts black; beneath pale vina- 
Bees (CIMEATNOMNG pou fd se wiake a othe owe L. insularis 438 
b.” Upper parts steel gray and black; be- 
neath whitish, washed with salmon....L. martirensis 439 
447. callotis (Lepus), Wagl., Nat. Syst. Amph., 1830, p. 23. Elliot, 
Syn. N. Am. Mamm., rgo1, p. 288. 
nigricaudatus, Bennett, Proc. Zodl. Soc., 1833, p. 41. 
mexicanus (Licht.) Richards 6th Rep. Brit. Assoc., 1837, p. 150. 
flavigularis, Wagl. Suppl. Schreib. Saugeth. Iv, 1844, p. 107. 
BEAUTIFUL-EARED JACK Rassit. Liebre in Mexico. 
Type locality. ‘‘ Mexico.” ‘ 
