r 



12 PROCEEDINGS OF THE ACADEMY OF [Jan. 



Mr. Rhoads' measurements are as follows: 



Hind 

 Length. Tail. foot. Ear. 



9 , Hacienda Garzon, 10,500 



ft., May 4 201 108 23 14 



9 , juv., Hacienda Garzon, 



10,500 ft., May 13 174 95 23 14 



9 , Hacienda Garzon, 10,500 



ft.. May 15 215 118 24 12 



cf , Hacienda Garzon, 10,500 



ft.. May 15 216 118 24 IG 



cr^, Paramo, 13,000 ft., May 7. 205 100 24 15.5 



9 , Paramo, 13,000 ft., :VIay 7. 205 125 25 IG 



9 , Paramo, 13,000 ft., May 7. 204 112 24 14 



9, Paramo, 13,000 ft., May 7. 195 102 24 14 



cf, Paramo, 13,000 ft., May 7. 210 115 25 15 



10. Thomasomys rhoadsi sp. nov. 



Mr. Rhoads secured a series of seven specimens of another Thoma- 

 somys on the paramo of Mt. Pichincha apparently allied to T. 

 cinereus Thomas, from Cutervo, Peru. As no such animal seems 

 to have been described from Ecuador, I propose to name it Thoma- 

 somys rhoadsi, in honor of Mr. Samuel N. Rhoads whose expedition to 

 Ecuador has brought to light so many interesting species of verte- 

 brates. 



Type No. 12,709, Collection Academy of Natural Sciences of 

 Philadelphia, d" . May 15, 1911, Hacienda Garzon, Mt. Pichincha, 

 10,500 feet. Coll. by Samuel N. Rhoads. 



Skull similar to that of T. cinereus Thomas, but a little larger with 

 much wider interpterygoid fossa. Fur long and soft. Brown tints 

 of upper parts nearly bistre of Ridgway's "Color Standards," but so 

 mingled with black hairs that the general appearance is very much 

 darker, nearly black on the back. The fur of the under parts is gray 

 with buffy tips, not whitish. The upper side of the hind feet is 

 clothed with dusky hairs down to the base of the toes, while the 

 latter have scattered white hairs, notably at their extremities. The 

 fore feet an; but scantily haired, while the hairs on the tail in no way 

 conceal the scales. The ears are well haired. 



Length 250 mm., tail 110, hind foot 31.5, ear 16. Skull measure- 

 ments.2 Total length 35 mm., greatest breadth 18, molar series 7, 

 incisors to first molar 10, l)readth of constriction between orbits 6, 

 lower jaw (bone only) 20. 



2 As used by Thomas in desorij)! ion of T. cinereus. 



