Occasional Papers of the Museum of Zoology 23 



Kattiis rattiis rattiis. Black Rat. — Covert" states that the 

 species is "very' rare. I have but one specimen, which was 

 caught at the Michigan Central R. R. Depot." 



Mustela allegheniensis. Least Weasel. — Covert says, "The 

 only specimens of this mammal I have had were brought in 

 this winter" (1881). I have not been able to find these speci- 

 mens, which were doubtless small females of Mustela nove- 

 boracensis. 



° Covert, A. B., in History of Washtenaw County, pp. 193-194, 1881. 



