SCIURUS. 21 



under side rufous, overlaid above by black and washed with whitish, 

 Ex type in United States National Museum. 



Measurements. Total length, 526; tail, 273; hind foot, 67. Skull: 

 Occipito-nasal length, 58.8; Hensel, 45.5; zygomatic width, 34.5; 

 intertemporal width, 17.3; length of nasals-, 17.2; length of palate, 26; 

 length of upper molar series, 10.8; length of mandible, 27.7; length of 

 lower molar series, 11.5. Ex type in United States National Museum. 



Sciurus boothiae annalium Thomas. 



Sciurus boothice annalium Thos., Ann. and Mag. Nat. Hist., 5th 

 Ser., XVI, 1905, p. 309. 



Type locality. Honduras. Type in British Museum. 



Genl. CTiar. "As in S. boothice, but belly grey instead of white." 



Color. "Above as in boothia but less heavily blackened. Under 

 surface and inner side of limbs uniformly dull grizzled greyish (between 

 1 drab-grey ' and 'hair-brown'), not defined laterally from the colour of 

 the sides. Ears with a narrow black edging ; the small patch behind their 

 posterior bases dull greyish white. Upper surface of hands and feet 

 black. Tail-hairs black, annulated along the middle line below with dull 

 whitish, and tipped with white, but less broadly than in true boothia." 



Measurements. "Head and body 250 mm.; tail, 250; hind foot, 

 s. u. 51, c. u. 55 (the second specimen larger: hind foot, s. u. 57, 

 c. u. 61)." 



"Length of upper tooth row, exclusive of small premolar, 10." 

 (Thomas, /. c.). 



I have not seen this species. 



Sciurus variegatoides helveolus Goldman. 



Sciurus variegatoides helveolus Goldm., Smith. Misc. Coll., LVI. 

 No. 36, 1912, p. 3. 



Type locality. Corozal, Canal Zone, Panama. 



Genl. Char. Similar to S. variegatoides but paler on limbs and 

 underparts. 



Color. Top of head and back grizzled black and pale buff; muzzle 

 and sides of head buffy gray; outer side of limbs, flanks, underparts, 

 hands and feet pale buff; tail above at base grizzled like back, re- 

 mainder black and white, the latter hue on tips of hairs; beneath 

 ochraceous-buff in the center bordered with black with an outer 

 edging of white; ears with pale buff patches and broad black borders. 

 Type in United States National Museum. 



Measurements. Total length, 508; tail, 255; hind foot, 63. 

 Skull: Occipito-nasal length, ; Hensel, ; zygomatic breadth, 

 34.2; intertemporal width, 21; length of nasals, 19.3; palatal length, 

 26.7. Type in United States National Museum. 



