Lyon] 



THE HARES AND THEIR ALLIES 



351 



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12 



13 



14 



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16 



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17 



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22 



23 



24 



25 



Fig. 44. — Enamel pattern of first right upper incisor of Hares, Rabbits, and 

 Pikas, enlarged nearly four times, i, Brachylagus idahoensis, No. 93696, lone 

 valley, Idaho. 2, Sylvilagns (Microlagtis) bachmani, No. 98466, Bridgeville, 

 California. 3, Sylvilagns (Sylvilagns) floridanus, No. 49586, Florida. 4, Liiiino- 

 lagns paludicola, No. 64029, Kissimmee, Florida. 5, Romerolagns nelsoni, No. 

 57954, Mt. Popocatepetl, Mexico. 6, Lepus iibetanus, No. 62126, Ladak. 7, Lepiis 

 ochropus, No. 34735, Kilima-njaro, Africa. 8, Lepus yarkandensis, No. 62132, 

 eastern Turkestan. 9, Lepus ruficaudatus, No. 38039, Inda. 10, Lepus sp., No. 

 49621, Jumna river, India. 11, Lepus (Macrololagus) allcni, No. 59292, Sonoyta, 

 Mexico. 12, Lepus (Macrotolagus) nierriami, No. 84643, Fort Clark, Texas. 13, 

 Lepus {Macrotolagus) gaillardi. No. 35709, Chihuahua, Mexico. 14, Lepus 

 (Macrotolagus) asellus, No. 36009, San Luis Potosi, Mexico. 15, Lepus (Macroto- 

 lagus) callotis, No. 8982, Chihuitan, Mexico. 16, Lepus (Macrotolagus) texianiis. 

 No. 63 1 1 8, northeastern Mexico. 17, Lepus (Macrotolagus) calif ornicus, No. 

 60867, southern California. 18, Lepus (Poecilolagus) americamis, No. 4325, Fort 

 Liard, British America. 19, Lepus (Lepus) campestris, No. 61367, Madison, 

 Minnesota. 20, Lepus (Lepus) timidus, No. 37137, Sweden. 21, Lepus (Lepus) 

 enropaus, No. 105828, Switzerland. 22, Oryctolagus cuniciilui-, No. 3124, England. 

 23, Pronolagus crassicaudatus, No. 22972, South Africa. 24, Pentalagus furnessi, 

 No. 5583, Liu Kiu islands. 25, Ochotona ladacensis, No. 84062, Ladak. 



