TYLOMYS. 219 



Color. Above dark gray, blackish on posterior half; orbital ring 

 dusky; chin, breast, and patch between hind legs white; throat and 

 belly plumbeous tinged with fulvous; hands and feet dark brown; 

 tail blackish above on basal half, yellow on remainder. 



Measurements. Total length, 448; tail vertebrae, 234; hind 

 foot, 46. 



197. bullaris (Tylomys), Merr., Proc. Wash. Acad. Scien., in, 1901, 



p. 561. 

 TUXTLA RAT. 



Type locality. Tuxtla, State of Chiapas, Mexico. 



Gcnl. Char. Unique specimen too young for reliable characters. 



Color. "Similar to the young of T. nudicaudus, but grayer; 

 under parts white ; upper lip and patch on side of nose whitish ; hands 

 brown; hind feet dark brown; toes white. 



Measurements. Total length juv., 324; tail, 158; hind foot, 37.5. 



198. watsoni (Tylomys), Thomas, Ann. Mag. Nat. Hist., 7th Ser., 



iv, 1897, p. 278. 

 WATSON'S RAT. 



Type locality. Bogava, Chiriqui, Panama. Altitude, 8,000 feet. 



Genl. Char. Similar to T. nudicaudus, but more rufous; size 

 medium; fur glossy; tail shorter than head and body. 



Color. Above rufous fawn, lined with blackish; cheeks and sides 

 paler and more gray; space between eyes and ears black; belly and 

 inner side of hind limbs whitish buff; rest of under parts and inner 

 side of fore limbs white; tail dark on basal, white on distal half; toes 

 white. 



Measurements. Total length, 493; tail, 243; hind foot, 38. 

 Skull: greatest length, 54; Hensel, 42.5; greatest breadth, 26.5; 

 length of nasals, 18; interorbital constriction, 10.5; palatal length 

 from henselion, 22.2; length of upper molar series, 8.4. 



199. panamensis (Neomys), Gray, Ann. Mag. Nat. Hist., 4th Ser., 



xn, 1873, p. 417. 

 PANAMA RAT. 



Type locality. Panama. 



Geogr. Distr. Panama, Southern Central America. 



Color. Upper parts mouse color, lined with black; sides paler; 

 throat and under parts and inner side of arms and legs white; tail 

 black, tip white; hands and feet brownish; claws covered with white 

 hairs. 



Measurements. Total length, 412.5; tail, 200. 



