2 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 68 



Head and body 82 mm.; tail 46; hindfoot 17.7. Upper molar 

 series 3.7. 



Habitat. — Lauramarca. 



Type.— Brit Mus. No. 3. 2. 9. 8. Coll. O. Garlepp. 



THOMASOMYS NOTATUS, sp. nov. 



Size medium. Dark dorsal stripe present. Metatarsus with dark 

 patches. 



Head and body 128 mm.; tail 155; hindfoot 27; ear 18.5. Skull 

 greatest length 33. 



Habitat. — Torontoy, 9,500 feet. 



Type. — Male. U. S. Nat. Mus. No. 194548; original number 173. 



THOMASOMYS GRACILIS, sp. nov. 



Similar to Thoniasouiys ba^ops but smaller ; about the smallest of 

 the genus. 



Head and body 82 mm.; tail 120; hindfoot 21.5; ear 16. Skull, 

 greatest length 26.1. 



Habitat. — Matchu Picchu, 12,000 feet. 



Type. — Male. U. S. Nat. Mus. No. 194816; original number 321. 



THOMASOMYS DAPHNE, sp. nov. 

 Size small ; ears short. Incisors unusually thrown forward. 

 Head and body 92 mm.; tail 133; hindfoot 23.5; ear 16. Skull, 

 greatest length 27.7. 



Habitat. — Ocobamba Valley, 9,100 feet. 



Type. — Female. U. S. Nat. Mus. No. 194902 ; original number 521. 



AKODON SURDUS, sp. nov. 



Allied to Akodon mollis but more stoutly built, and darker in color, 

 without tinge of bufify. 



Head and body no mm.; tail 80; hindfoot 22.5; ear 16. Skull, 

 greatest length 28. 



Habitat. — Huadquifia, 5,000 feet. 



Type. — Male. U. S. Nat. Mus. No. 194663 ; original number 835. 



CHR(EOMYS INORNATUS, sp. nov. 



Near Chrocomys pulcherrimns, but ears smaller and bullae and 

 special markings reduced. 



Head and body 122 mm.; tail 80; hindfoot 24.5; ear 16. Skull, 

 greatest length 30. 



Habitat. — Ollantaytambo, 13,000 feet. 



Type. — Female. U. S. Nat. Mus. No. 194685 ; original number 457. 



