APPENDIX. 19. 



"LOUISIANA MARMOT OR PRAIRIE DOG ARCTOMYS LUDOV/CIANA." = 



Cynoniys ludovicianus i^Ord) Rafinesque. See below, note for page 302. 



"COLUMBIA MARMOT ARCTOMYS COLUMBIANUS."=Spermophilus colum- 



bianus (Ord) Merr. See Merriani, N. Am. Fauna No. 5, 1891, 39; 

 also Coues, Lewis & Clark, 1893, iii, 856 (foot note) ; also my notes, 

 below, for page 303. Type locality, Camp Chopunnish on the Kooskoos- 

 kee (Clear-water) River, near town of Kamai, Idaho. 



Page 292. 

 GENUS SCIURUS. 



''Large Black Squirrel Sciurus niger." Sciurus niger of the tenth 

 edition of Linnaeus, now understood in the restricted sense to apply to 

 the Fox Squirrel of the southeastern United States. 



"SMALL BLACK SQUIRREL SCyuS PENNSYLVANIA." Dr. J. A. Allen, 

 after discussing (Mon. N. Am. Rod., 1877, 709) the synonymy of the 

 eastern Gray Squirrel, Sciurus carolinensis of Gmelin, (Syst. Nat., i,. 

 1788, 148), prefers to retain the varietal name leucotis of Gapper (Zool. 

 Jour., v, 1830, 206) for the northern form in preference to the above- 

 name of Ord, applied to it fifteen years earlier. Dr. Allen, not having 

 access to Ord's work, objected to the validity of pennsylvanica on the 

 plea that it was based on specimens from the Middle States, an intermed- 

 iate locality between those of the southern and northern forms and so not 

 typical of either. This objection is fully met by Ord's foot note, which 

 gives the habitat of the Small Black Squirrel as "those parts of Pennsyl- 

 vania which lie to the westward of the Allegany ridge." The region thus 

 designated is assigned by Dr. Allen (Bui. Am. Mus. N. Hist., iv, pi. viii.) 

 almost wholly to the Alleghanian and Canadian faunae, and it is well 

 known that the "Black Squirrel" is very rarely met with in Pennsylvan- 

 ia east of the Susquehanna River, and rarely west of it, except in the 

 northivestern parts of the state, in a region typically Canadian in its 

 faunal characters. There seem therefore, no valid objections to allow- 

 ing Sciurus carolinensis pennsylvamcus (Ord) to stend as the name of 

 the northern Gray Squirrel. 



"Cat or Fox Squirrel Sciurus vulpinus." This is Gmelin's name for the 

 Sciurus niger of Catesby and Linnaeus. 



"Gray Squirrel Sciurus cinereus." Ord probably applied this name to- 

 the normal gray phase (sup. cit.) of his "Small Black Squirrel," 5". car- 

 olinensis pennsyvlanicus . The name S. cinereus Linn. (Syst. Nat., 1758, 

 64)is considered to properly belong to the northern race of Sciurus niger, 

 the "Cat Squirrel" of Bachman, and should read Sciurus niger cinereus 

 (Linn.) J. A. Allen. 



"Louisiana Gray Squirrel Sciurus Ludovicianus." This species is not 

 given in either edition of Turton. It was so named by Custis in Barton's 

 Medical and Physical Journal (vol. ii., 1806, p. 43) from which Ord must 



