HETEROMYS. 99 



Occipito-nasal length, 36.5; Hensel, 25.5; zygomatic width, 1 7 ; inter- 

 temporal width, 10 ; length of nasals, 15.2; width of braincase, 15.2; 

 length of upper molar series, 5.3; length of mandible, 5.3; length of 

 lower molar series, 4.8. Ex type in United States National Museum. 

 Mr. Goldman states that the underparts and line along the flanks 

 and inner side of limbs and feet are white, but. I find these parts in the 

 type a cream-buff, the feet being a little darker. 



Heteromys temporalis Goldman. 



Heteromys temporalis Goldm., N. Amer. Fauna, No. 34, 1911, p. 26. 



Type locality. Motzorongo, Vera Cruz, Mexico. 



Geogr. Distr. Heavily forested eastern basal slopes of 'mountains in 

 central part of the state of Vera Cruz, Mexico. Humid Tropical Zone. 



GenL Char. Size large; no lateral line; skull with slender rostrum ; 

 braincase broad and flat. 



Color. Head and upperparts mixed black and ochraceous, dark- 

 est on lower back, and outer side of arms brown with buff hairs inter- 

 mingled; dorsal line darker, underparts, hands and feet yellowish 

 white; ankles dusky; tail above dusky, beneath whitish. Ex type 

 in United States National Museum. 



Measurements. Total length, 220; tail, 180; hind foot, 37. 

 Skull: Occipito-nasal length, 38.9; Hensel, 27.5; zygomatic width, 

 17.8; inter temp oral width, 10.2; length of nasals, 16.2; length of 

 upper molar series, 5.3 ; length of mandible, 17.5; length of lower molar 

 series, 5. Ex type in United States National Museum. 



In the original description of this species, the head and upperparts 

 and outer side of fore legs are said to be mouse-gray. I found nothing 

 whatever of this color in the type, the parts being as described above; 

 also the feet and hands were not white but showed a strong yellowish 

 tint. 



Heteromys fuscatus Allen. 



Heteromys fuscatus Allen, Bull. Am. Mus. Nat. Hist., XXIV, 1908, 



p. 652. 

 Type locality. Tuma, Nicaragua. 



Heteromys panamensis Goldman. 



Heteromys panamensis Goldm., Smith Misc. Coll., LVI, 1912, No. 

 36, p. 9. 



Type locality. Cerro Azul, near headwaters of the Chagres River, 

 Panama. Altitude, 2800 feet. 



Genl. Char. Similar to H. repens, but darker; rostrum broader 

 posteriorly; interparietal broader. 



