304 Cincinnati Society of Natural History. 



am not aware that these local migrations have been actually observed 

 in this vicinity, it is a matter of common observation that a deficiency 

 in the mast crop indicates a scarcit}' of squirrels, and vice versa. 



As would be expected in a locality occupying a position almost 

 on the boundary line of the two sub-species (carolinensis and leucotis), 

 a large majority of the specimens from this vicinity can not be posi- 

 tively referred to either form, being intermediate both in size and colora- 

 tion. As illustrative of this fact, the lengths (from nose to root of tail) 

 of a series of nine specimens taken near Cincinnati on September 30, 

 1880, by my colleagues, Drs. S. M. Hart, and G. M. Allen, are appended. 

 In the general extension of the yellowish-brown tinge over the entire 

 dorsal surface, most of these specimens more resemble carolinensis 

 than leucotis, while in two or three of the larger ones this tinging is 

 almost absent, the back presenting the clear, gra}^ appearance charac- 

 teristic of leucotis, with the brownish limited to the median dorsal line. 

 Their lengths are as follows, in inches: 10^, 10^, 10, 10, 10, 10, 10, 10, 

 9; average 9J.]. 



Judging from specimens taken at Madisonville in October, I have 

 good reason for believing that the species litters in this latitude as 

 late as September ] 5-30. 



25a. SciuRus carolinensis, var. leucotis, Allen. — Northern Gray 

 Squirrel. — Specimens answering closely to Allen's description ot this 

 form are of occasional occurrence here. As the general tendency 

 however, of Cincinnati specimens seems to be toward carolinensis, 

 the notes on the species have been given under the head of that variety. 



The Black Squirrel, now general^ considered to be a melanotic 

 phase of var. leucotis, has never, to my knowledge, been observed here, 

 though said to be of rather frequent occurrence in central and northern 

 Indiana. 



26. SciURUS NIGER, var. ludovicianus, Allen. — Western Fox Squirrel. 

 — A somewhat rare species in this vicinit}', though quite common in the 

 central and northern portions of the State. Dr. Raymond^ states that 

 the Fox Squirrel made its first appearance in the vicinity of Brookville, 

 Indiana, about the year 1840, and has since gradual^ increased in 

 numbers. 



27. Tamias STRiATUS, Baird. — Chipmunk; Ground Squirrel. — A 

 very common species, and a troublesome forager on newly planted 

 corn fields in some localities. 



- F?"(?e Indiana Agricultural and Geological Reports, 1869, p. 205; article, "Mammals of 

 Franklin county." 



