386 PROCEEDINGS OF THE ACADEMY OF [1899. 



10; depth of brain case at anterior end of basioccipital, 26; dias- 

 tema, 23.6; maxillary molar series (alveoli), 14; mandible, 62; 

 diastema, 19; mandibular molar series (alveoli), 14.6. 



Specimens Examined. — Six, all from the type locality. 



General Remarhs. — Lepus Jloridanus yucatanicus and L. flovi- 

 danus aztecus resemble each other rather closely, but differ in easily 

 recognizable characters. Lepxis floridanus aztecus is the smaller ani- 

 mal of the two, with blacker back, more buffy sides and clearer gray 

 cheeks. The cranial diffei*euces between the two forms are well 

 marked. It is highly probable that these red rumped animals are 

 specifically distinct from Lepus floridanus. 

 Lepus floridanus subcinctus subsp. nov. 



Type adult ? (skin and skull). No. l%\^^ United States Na- 

 tional Museum, collected at Hacienda El Molino, near Negrete, 

 Michoacan, Mexico, June 15, 1892, by P. L Jouy. Original 

 number, 415. 



General Characters. — Most like Lepus Jloridanu.'< chapmani Allen, 

 from Corpus Christi, Texas, but slightly larger, the ears longer, 

 and color of under parts duller. Color of sides strongly encroach- 

 ing on dull white of bellv and almost dividing it immediately in 

 front of hind legs. Skull slightly larger than that of L. flori- 

 danus chapmani, but not appreciably different in form. 



Color. — Back a uniform grizzle of black and buffy white, the 

 latter slightly predominating. On the sides and rump the white 

 becomes clearer and the black less conspicuous, thus producing a 

 paler grizzle slightly contrasted with that of back. Under fur on 

 back light, bluish gray with scarcely noticeable brownish tips. On 

 rump the basal color is slightly paler and the tips of the hairs for 

 about 5 mm. are pinkish buff. Tail, snowy white beneath, hair 

 bi'own grizzled with whitish above. Nape patch light cinnamon. 

 Ears uniform gray faintly tinged with buff on inner surface, 

 and narrowly rimmed with blackish along external anterior border 

 near tip. Lower half of anterior border fringed with lengthened 

 white hairs. Crown of head like back, but slightly yellower. 

 Cheeks like sides of body, and distinctly shaded with black below 

 and behind eye. A whitish eye ring. Chin and upper part of 

 throat dull white, strongly darkened by the bluish gray bases of the 

 hairs. Chest an<l lower throat cream buff, darkened by a sparse 



