SCIURUS. 127 



NICARAGUA SQUIRREL. 



Type locality. Realejo, Nicaragua. 



Geogr. Distr. Lowlands on west coast of Nicaragua. 



Genl. Char. Hairs of back coarse, stiff, shiny; under fur short. 



Color. Upper parts and upper portion of thighs, dark brown, 

 washed with grayish; flanks paler; crown iron gray; cheeks, sides of 

 neck, and nape grayish brown; under parts, arms, part of shoulders, 

 and inside of thighs dark reddish chestnut; chin, throat, axillar 

 region, and between hind legs white; tail above black washed with 

 white, beneath rusty brown bordered with black and edged with 

 white; hands and feet grizzled chestnut; ears iron gray, with white 

 patches at base. 



Measurements. Total length, 440; tail vertebrae, 199 ; hind foot, 65. 



a. dor salts (Sciurus), Gray, Proc. Zool. Soc., 1848, p. 138. 



rigidus Peters, Monatsb. K. Preuss. Akad. Wiss. Berlin, 1863, 

 p. 652. 



intermedius Gray, Ann. Mag. Nat. Hist., 3d Ser., xx, 1867, p. 421. 



nicoyana Gray, Ann. Mag. Nat. Hist., 3d Ser., xx, 1867, p. 423. 



boothicB Allen, Mon. N. Am. Rodent., 1877, p. 741. (Part. Costa 

 Rica specimens.) 



hypopyrrhus Allen, Mon. N. Am. Rodent., 1877, p. 746. (Part. 



West Costa Rica specimens.) 

 BANDED-BACK SQUIRREL. 



Type locality. Liberia, Costa Rica nee Caracas, Venezuela. 



Geogr. Distr. Western Costa Rica, Alajuela to Liberia, Peninsula 

 of Nicoya, and possibly adjacent parts of Nicaragua. 



Genl. Char. Tail long, narrow; colors brighter than those of S. 

 adolphei. Hairs coarse, stiff. 



Color. Dorsal band from nape to tail blackish to grizzled yellow- 

 ish brown; sides grayish; crown and sides of head paler than back; 

 under parts, arms, legs, hands, and feet varying from white or yellow- 

 ish to rufous; chin, cheeks, and sides of neck grizzled gray to grayish 

 brown; tail above black, washed with white, beneath dark rufous 

 to rusty orange, or grayish white bordered by black and edged with 

 white; ears grizzled gray or brown, with black border, and basal 

 white patches. This is a very variable species and has several color 

 phases, individuals presenting quite a different appearance from each 

 other. 



Measurements. Total length, 510; tail vertebrae, 248.5; hind foot, 

 62.2. Skull: average of two; basal length, 51.7; palatal length, 27.7; 

 interorbital width, 21.8; zygomatic width, 35.2; length of upper 

 molar series. 11.7. 



