CATALOG OF TYPE SPECIMENS OF MAMMALS 321 



*Hesperomys gracilis LeConte. 



Proc. Acad. Nat. Sci. Philadelphia 7 : 442, ordered published at meeting 

 of Dec. 25, 1855. 

 =Peromi/scus maniculatus gracilis (Le Conte). See Osgood, North Amer. 

 Fauna 28: 42, Apr. 17, 1909. 



'^^"^. Skin and skull. Micliiffan. Received from J. E. LeConte. 

 38002 ^ 



Skin cataloged October 15, 1872 ; skull, May 26, 1902. 



The skin is in very poor condition. The left hindleg is the only one 

 present. The skull, removed in May 1902, is somewhat more serviceable. 

 The posterior half of the brain-case has been cut away ; the left zygoma 

 is missing. The right half of the mandible is perfect, while the ascending 

 portion of the left half is broken off. 



Attached to the specimen are three labels reading as follows : 



(1) "Monograph of American Muridae. Elliott Coues, U. S. A. No. 

 10292. Type of Hesperomps gracilis— leucopus." 



(2) "Hesp. 'gracilis' LeConte type specimen Wisconsin? Ohio? Michi- 

 gan?" pasted on the reverse side of this label is "gracilis." 



(3) "Monograph of American Muridae. Elliott Coues, U. S. A. No. 10292. 

 Hesperomys leucopus." 



There is li-ttle in the original description to indicate that this specimen 

 is the type. The entry in the catalog for 10292 reads "Dry type of gracilis." 

 On page 51, Monographs of North American Rodentia, under the synonymy 

 of Hesperomys leucopus, Coues gives "Hesperomys gracilis, LeConte, Proc. 

 Acad. Nat. Sci. Philadelphia, vol. 7, p. 442, 1855 (Ohio or Michigan and Wis- 

 consin ; types Nos. — , 4710, Mus. Smiths.)." The dash may refer to the 

 above specimen ; the other specimen, 4710, is one not quite so poor. There 

 is nothing about its labels or catalog entry to indicate that it is a type or 

 cotype. 



fPeromyscus gratus Merriam. 



Proc. Biol. Soc. Washington 12 : 123, Apr. 30, 1898. 

 ^Peromyscus truei gratus Merriam. See Osgood, North Amer. Fauna 28: 

 173, Apr. 17, 1909. 



50619. Skin and skull. Adult female. Tlalpam, Federal Dis- 

 trict, Mexico. November 30, 1892. Collected by E. W. Nelson. 

 Original number 3927. 

 Well-made skin in good condition; skull Grade A. 



fPeromyscus gratus gentilis Osgood. 



Proc. Biol. Soc. Washington 17 : 61, Mar. 21, 1904. 

 =Peromyscus truei gentilis Osgood. See Osgood, North Amer. Fauna 28: 175, 

 Apr. 17, 1909. 



78937. Skin and skull. Adult male. Lagos, Jalisco, Mexico. 

 June 27, 1896. Collected by E. W. Nelson and E. A. Goldman. 

 Original nmnber 9702. 

 Well-made skin in good condition ; skull Grade A. 



*Peromyscus guardia Townsend. 



Bull. Amer. Mus. Nat. Hist. 31 : 126, June 14, 1912. 



