174 tylomys. ototylomys. sigmodon. 



Watson's Rat. 



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

 Geogr. Distr. Panama, Central America. 



387. Tylomys panamensis (Gray). 



Xeomys panantensis Gray, Ann. Mag. Nat. Hist., 4th Ser., xii, 



1873, p. 417- 

 Tylomys panmnensis Elliot, Mamm. Middle Amer. & W. Indies, 



F. C. M. Pub., iv,^ Pt. I, 1904, p. 219. Zool. Ser. 

 Panama Rat. 



Type locality. Panama. 



Geogr. Distr. Panama, Central America. 



Genus 64. Ototyloiiiys. 



Ototylomys Merr., Proc. Wash. Acad. Scien., iii, 1901, p. 561. 

 Type Ototylomys phyllotis Merriam. 



388. Ototylomys phyllotis Merriam. 



Ototylomys phyllotis Merr., Proc. Wash. Acad. Scien., in, 1901, 

 p. 562. .Elliot, Mamm. Middle Amer. & W. Indies, F. C. M. 

 Pub., IV, Pt. I, 1904, p. 221, fig. 37. Zool. Ser. 

 TuNKAS Rat. 



Type locality. Tunkas, Yucatan, Mexico. 



Geogr. Distr. Yucatan. 



a. Otofylninys phyllotis phceus Merriam. 



Ototylomys phyllotis phceus Merr., Proc. Wash. Acad. Scien., iii, 

 1901, p. 563. Elliot, Mamm. Middle Amer. & W. Indies, 

 F. C. M. Pub., IV, Pt. I, 1904, p. 221. Zool. Ser. 

 Apazote Rat. 



Type locality. Apazote, near Yohaltun, State of Campeche, 



. Mexico. 

 Geogr. Distr. State of Campeche, Mexico. 



Genus 65. Sigiiiocloii . Cotton Kats. 



Sigmodan Say and Ord, Joum. Acad. Nat. Scien. Phil., iv, 1825, 

 p. 352, pi. XXII, figs. 5-8. Type Sigmodon hispidus Say and 

 Ord. 



389. Sigmodon hispidus Say and Ord. 



Sigmodon hispidus Say and Ord, Joum. Acad. Nat. Scien. Phil., 

 1825, p. 354. Elliot, Syn. N. Am. Mamm., F. C. M. Pub., 11, 

 1 901, p. 144, fig. 31. Zool. Ser. 



