MUSEUM OF COMPARATIVE ZOOLOGY. 239 



51. Sciurus cinereus Linn.* 59. Hesperomys leucopus LeConte. 



52. " carolinensis Gmelin. 60. Arvicola Gapperi Vigors. 



53. " hudsonius Pall. 61. " riparius Ord. 



54. Pteromys volucella Linn. 62. " pinetorum LeConte.* 



55. Tamias striatus Baird. 63. Erethizon dorsatus F. Cuo* 



56. Arctomys monax Gmelin. 64. Lepus araericanus Erxl. 



57. Fiber zi be thicus F. Cuv. 65. Sylvilagus sylvaticus Gray. 



58. Jaculus hudsonius Baird. 



II. Extirpated Species. 



1. Felis concolor Linn. 4. Cervus canadensis Linn. 



2. Alee malchis Ogl. 5. Castor fiber Linn. 



3. Tarandus rangifer Gray. 



III. Adventitious Species. 

 1 . Mus decumanus Zi'nn. 

 3. " rattus Linn. 

 3. " inusculus Linn. 



IV. Northern Species. 



[Not occurring in this State south of the Canadian fauna (excepting 

 Lepus americanus, which ranges through the Alleghanian), and hence 

 represented only in portions of the western counties.]! 



1. Mustela Pennantii. 5. Tarandus rangifer. 



2. " martes. 6. Arvicola Gapperi. 



3. Gulo luscus. 7. Erethizon dorsatus. 



4. Alee malchis. 8. Lepus americanus. 



V. Southern Species. 



[Not occurring north of the Alleghanian Fauna, and hence unrep- 

 resented in the more elevated parts of the State, though more or less 

 common in the other portions.] 



f Antea, in a foot-note to page 147, Cervus canadensis is included among the species 

 there mentioned as characteristic of the Canadian fauna, as formerly represented in 

 Massachusetts. I have since found, from what is known of its earlier range, that it 

 probably once extended over the greater part of the States lying east of the Mississippi, 

 and undoubtedly extended along the Atlantic coast farther south even than Southern 

 New England. There is unquestionable evidences of its existence within the last fifty 

 years on both sides of the Ohio River near its mouth; a locality much more southern, 

 faunally as well as geographically, than any part of New England. Hence it cannot 

 be taken as a species the southern boundary of whose habitat marks the lower limit of 

 the Canadian fauna, as there stated. 



