12 



looked for are Sorex platyhrinus, S. Richardsonii, S. "Haydeni" and 

 S. "Hoyi." The following, from their ascertained distribution, must be 

 present, specimens of the latter being in fact already known from this 

 State. 



26. Sorex Cooperi Bachtnan. (Cooper's Shrew.) 



27. Blarina brevicauda Baird. (Mole Shrew.) 



TALPID^E. 



28. Scalops argentatus Bachman. (Silvery Mole.) 



This species is well known to occur in the State, but it does not 

 appear to DC very numerous. 



29. Condylura cristata Illiger. (Star-nosed Mole.) 



This species having been traced westward to the Mississippi, it 

 doubtless occurs in eastern Iowa, but probably only as a rather rare 

 species. I can find, however, no specimens of it reported from there. 

 It is said to inhabit the prairies of Illinois. 1 



The Brewer's Mole (Scalops Breweri) may also be met with here, 

 though it has not yet been found, so far as I am aware, west of the 

 State of Ohio. 



SCIURID.E. 



30. Sciurus carolinensis Gmelin. (Gray Squirrel.) 



Said to be more or less numerous in the groves along the water 

 courses. I saw, however, but very. few. 



31. Sciurus ludovicianus Custis. (Western Fox Squirrel.) 

 Common in the same situations as the preceding species; I saw it 



much more frequently. It was, however, far less numerous than I 

 found it to be in Ogle county, Illinois, or in southern Michigan, in both 

 of which localities there was a much greater predominance of forest. 

 In these latter localities the preceding (S. carolinensis) was also ex- 

 cessively abundant, both in its black and gray colors, and in every 

 intermediate stage between gray and black. The young, as I have 

 already mentioned in another connection, 2 more frequently represent 

 the intermediate stage, their fur presenting the annulated appearance 

 mentioned by Prof. Baird as characterizing intermediate color varie- 

 ties. 8 This form of S. carolinensis was more especially abundant in 

 Illinois, where the greater part of the large number of specimens I 



i Kennicott, Patent Office Rep., Agr., 1857, p. 101. 



* Bulletin Mus. Comp. ZoSlogy, No. vm, p. 222. 



Mammals of Xorth America, p. 244. 



