HETEROMYS. 379 



394. sonorana (Liomys), Merr., Proc. Biol. Soc. Wash., xv, 1902, 



P- 47- 

 SONORA SPINY MOUSE. 



Type locality. Alamos, State of Sonora, Mexico. 



Genl. Char. Size medium; skull with long and slender rostrum, 

 the sides parallel; nasals long, emarginate posteriorly; hind foot 

 6-tuberculate. 



Color. Above grayish drab, grizzled with fulvous and dark hairs; 

 lateral line fulvous; under parts, hands, and feet white; brown band 

 across nose; tail above dusky; beneath whitish, grading into dusky 

 on terminal third; ears edged with white. 



Measurements. Total length, 262; tail vertebrae, 142; hind foot, 

 32-5- 



395. veraecrucis (Liomys), Merr., Proc. Biol. Soc. Wash., xv, 1902, 



P- 47- 

 VERA CRUZ SPINY MOUSE. 



Type locality. San Andreas Tuxtla, State of Vera Cruz, Mexico. 



Genl. Char. Size medium; skull small; upper surface of anterior 

 root of zygomata strongly depressed and rounded; nasals notched 

 posteriorly; interparietal sub-triangular; hind foot 6-tuberculate. 



Color. Above dark brown, mixed with black and fulvous; lateral 

 line faint on sides of body; under parts white; tail dusky above, 

 whitish beneath; ankles dusky. 



Measurements. Total length, 220; tail vertebrae, 108; hind 

 foot, 25. 



396. obscurus (Liomys}, Merr., Proc. Biol. Soc. Wash., xv, 1902, 



p. 48. 

 DUSKY SPINY MOUSE. 



Type locality. Carrizal, State of Vera Cruz, Mexico. 



Genl. Char. Size rather large; skull heavy, and with high brain- 

 case; hind foot 6-tuberculate. 



Color. Above blackish, grizzled with fulvous and whitish, and 

 becoming grayish on the sides. 



Measurements. Total length, 230; tail vertebrae, 124; hind 

 foot, 31. 



397. phaeura (Liomys), Merr., Proc. Biol. Soc. Wash., xv, 1902, p. 48. 

 DARK-TAILED SPINY MOUSE. 



Type locality. Pinotepa, State of Oaxaca, Mexico. 



Genl. Char. Size small; ears large; hind foot 6-tuberculate; tail 

 short, unicolor except basal third beneath. Skull broad, short, and 

 flat; rostrum and nasals short, slender. 



