83. Liitra. 



I. -1=3 Q 1=1 p 1=4 M. 1=1 = 36. 



3—3 I— I 3-3' 2—2 -> 



Lutra. Erxleb. Syst. Regn. Anim., 1777, p. 448. Type Mustcla 

 lutra. Linn. 

 Upper molar large quadrate; posterior upper premolar triangu- 

 lar; skull depressed, superior outline nearly straight; rostrum short; 

 hind portion of skull dilated; nostrils large; palate extending beyond 

 molars; hamular processes to pterygoids. 



520. canadensis. (JMusteld), (Schreb), Kerr, Linn. Anim. King., i, 

 1792, p. 173. 



hiidsonica, (Lac^p), F. Cuv. Suppl. Buff., i, 1831, p. 194. 



mollis, Aud. & Bach. Quadr., iii, 1853, p. 976, fig. 122. 



destructor, Barnst. Canad. Nat., 1863, fig. 



Type locality. Unknown. 



Geogr. Distr. Eastern North America, north of North Carolina 

 on Atlantic coast. 



Genl. Char. Size large; under surface of feet hairy. 



Color. Dark liver brown above, pale on the under parts. Under 

 fur lighter. Cheeks, lips, chin and throat, whitish brown. 



Measurements. Size very variable. Total length, 966; tail verte- 

 brae, 315; hind foot, 100. 



a. — lataxina. {Lutra), F. Cuv. Diet, des Scien. Nat. 1823, p. 242. 



Type locality. South Carolina. 



Geogr. Distr. Eastern North America from North Carolina to 

 Alabama and Mississippi. South of Transition zone northward grad- 

 ing into L. canadeusis. 



Genl. Char. Size small, feet sparsely haired beneath. Skull 

 small, teeth large; postorbital processes weak. 



Color. Above dark vandyke brown, tipped on head, neck and 

 shoulders with wood brown; beneath breast to end of tail broccoli 

 brown. Neck and fore neck grayish brown. 



Measurements. Total length, 1016; tail vertebras, 260; hind foot, 

 115. Skull: occiput to anterior end of maxilla, 100; zygomatic width, 

 69.5; mastoid width, 65; interorbital constriction, 22.8; postorbital 

 constriction, 20. 



b,—va^a. {Lutra), Bangs, Proc. Bost. Soc. Nat. Hist., 1898, p. 224, 

 fig- P- 225. 

 Type locality. Mico, Brevard County, Florida. 

 Geogr. Distr. Eastern Georgia and Florida. 

 Genl. Char. Size larger than L. canadensis; tail longer; color 



