420 CONTRIBUTIONS TO A REVISION OF THE 



lighter hued canadensis, but agrees with all the other characters of frondator, to which 

 it seems most nearly allied in cranial and caudal characters. 



Specimens Examined. — New Brunswick, 1 skull ; Quebec, 1 skin with skull ; 

 Canada (?), 3 skulls, 1 skeleton, 2 mounted skins ; Ft. Simpson, N. W. T., 1 mounted 

 skin ; Idaho, 1 skin with skull. 



Carolinian Beaver. Castor canadensis carol'mensis, subsp. nov. 



Plate XXIII ; Figs. 1 and 2. 



Type Locality. — Dan river, near Danbury, Stokes county, North Carolina. Type 

 No. z.607, old ad. $, in the collection of the North Carolina State Museum, Raleigh, 

 N.C. Collected by a trapper in flesh for the Museum, April, 1897. 



Geographic Distribution. — Carolinian fauna, south into the Austroriparian. 



Color. — Of type and topotype : Overhair of upper head, neck, back and sides, 

 bright hazel. Underfill* of same parts, seal brown. Hinder back and rump lightening 

 from hazel to cinnamon rufous and then to tawny olive near base of tail. Vent and 

 under base of tail, dark, rich burnt umber. Ears pale blackish. Sides of head below 

 eyes light hair brown, shaded with pale cinnamon rufous. Feet bistre. Below, from 

 throat to vent, dark broccoli brown with wood-brown tips to overhair. 



Anatomical Characters. — Size large, larger than canadensis, with relatively much 

 broader tail, as in frondator. 



Skull large and broad, with very short, broad nasals. In the type the base of 

 nasals does not reach back to the line connecting the anterior walls of the orbits. Ros- 

 trum very short and broad. Audita! bullae remarkably contracted laterally, with a 

 strongly developed osseous column on the outer wall and the transverse diameter less 

 than the longitudinal. Incisors weak, narrowed ; molars large, with triangular crowns. 

 Pelage short and harsh as compared with canadensis. 



Measurements. — Of the type, from carcass: Total length, 1130 mm.; scaly portion of 

 tail, 279 by 158 mm.; hind foot, 18-1 mm.; ear, from crown, 21 mm.; length of skull, 

 148 mm.; breadth of skull, 107 mm.; length of nasals, 43.5 mm.; breadth of nasals, 29 

 mm. Of the topotype (ad. d 1 ): Total length, 1080 mm. ; scaly portion of tail, 260 by 146 

 mm.; hind foot, 174 mm.; ear from crown, 23 mm. 



Memarks. — The two skins and four skulls upon which the above diagnosis of caroli- 

 nt nsis is based were secured, just before the completion of this paper, from the authorities of 

 the State Museum of North Carolina. They are intended to form a group exhibit in the 

 State Museum, and have been carefully measured by the curator, Mr. H. H. Brimley, 

 while yet in the flesh. The old male which forms the type had lost one of its fore feet, 



