100 SCIURUS. 



Measurements. Total length, 290; tail vertebrae, 105; hind foot, 

 35 ; ear from crown, 9. Skull: basal length, 29.5 ; palatal length, 14.2 ; 

 interorbital width, 13; zygomatic width, 22; length of upper molar 

 series, 6. 



69. browni (Sciurus), Bangs, Bull. Mus. Comp. Zoo!., xxxix, 



1902, p. 24. 

 BROWN'S SQUIRREL. 



Type locality. Bogava, Chiriqui, Panama. 



Genl. Char. Size small, pelage rather harsh, thin. 



Color. "Upper parts a fine mixture of tawny olive and bistre, 

 produced by the dark brown bases and tawny olive tips of the hairs ; 

 nose, forehead, and orbital ring tawny; tail with the hairs dark red- 

 dish brown basally, then black and tipped with grayish white; a 

 small, black pencil; under parts dull gray to grayish white, slightly 

 washed with bufty or yellowish in some specimens (very slightly in 

 the type on under side of neck and middle of belly) ; under sides of 

 legs darker more nearly like upper parts." 



Measurements. "Total length, 232-260; tail vertebras, 110-120; 

 hind foot, 36-38; ear, 13-14. Skull: type, basal length, 29; occipito- 

 nasal length, 36; zygomatic width, 21.2; interorbital width, 12.4; 

 palatal length, to palatal notch, 13.4; to end of pterygoids, 20.2; 

 length of nasals, u ; length of upper molar series, 5.8." (Bangs, 1. c.) 



70. boquetensis (Sciurus'), Nelson, Proc. Biol. Soc. Wash., xvi, 



1903, p. 121. 

 CHIRIQUI PIGMY SQUIRREL. 



Type locality. Boquete, Chiriqui, Panama, altitude 6,000 feet. 



Genl. Char. Pelage soft, thick, woolly; tail slender, flat. Skull 

 long and narrow; braincase arched. 



Color. Upper parts, sides of body, and upper surface of arms and 

 legs olivaceous brown, shaded with yellowish; chin and throat dingy 

 rusty; under side of neck and breast rusty rufous shading into dull 

 grizzled brown; tail above and below dull tawny olive, washed and 

 tipped with black and edged with pale yellowish; hands and feet 

 washed with rusty reddish. 



Measurements. Total length, 257; tail, 116; hind foot, 37; 

 (dried skin.) Skull: palatal length, 15.5; interorbital breadth, 14; 

 length of upper molar series, 7. 



B. Baiosciurus. 



Premolars, ^- Skull long and slender; braincase arched; ros- 

 trum broad, about equal to interorbital breadth; audital bullse small. 



