138 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 69 



is edged with ochraceous buff to the tip, instead of conspicuously 

 tipped with black. The species, originally described from Costa 

 Rica, ranges into western Panama where a form regarded as identi- 

 cal by Allen (1904, p. 66) and as distinct by him (191 5, p. 220) has 

 been described as Scinriis cestuans chiriquensis (Bangs, 1902, p. 22). 

 As indicated by Allen (1915, p. 220) 5". h. chiriquensis is dis- 

 tinguished by a slightly richer, more ruf escent tone of coloration than 

 typical hoffmanni of the Costa Rican highlands, a reversal of the 

 differential characters as interpreted by Bangs in his original descrip- 

 tion. Dr. Allen also refers to vS". hoffmanni specimens of a squirrel 

 from the upper Cauca Valley, Colombia. The species was not 

 encountered by me in the course of extensive work at low elevations 

 in the Canal Zone and in the mountains of eastern Panama, and its 

 range is apparently discontinuous in that region. It may, however, 

 occur in the mountains along the Atlantic coast in an area from 

 which I have seen no collections. 



This is doubtless the species recorded from Panama under the 

 name Sciurus aestuans hy Sclater (1856, p. 139) who, referring to a 

 specimen collected by Bridges, remarks : " This seems to agree with 

 Bogota specimens so marked in the British Museum. It is from the 

 Boqueti at the base of the volcano of Chiriqui." It was also regarded 

 as Sciurus aestuans by Alston (1879, p. 132) who mentions British 

 Museum material collected at Calovevora by Enrique Arce. Forty-* 

 one specimens taken by W. W. Brown, Jr., at various localities 

 including Divala, Bugaba, Boquete and the Volcan de Chiriqui at 

 7,500 feet are listed by Bangs (1902, p. 22). Mr. Bangs in his full 

 account of the Chiriqui animal states that " skins from the Volcan 

 de Chiriqui from upwards of 4,000 feet altitude are more woolly 

 with decidedly more under fur than lowland examples, but otherwise 

 they do not differ." Since Divala is near sea level on the Pacific 

 coast this squirrel has a rather unusual altitudinal range. Fourteen 

 specimens obtained by J. H. Batty for the American Museum of 

 Natural History at Boqueron and Boquete were apparently the basis 

 of Dr. Allen's reference of the Chiriqui form to typical 6". hoffmanni. 

 More recently (1915, p. 220) he assigns them together with examples 

 from Divala, Bugaba, Tacoume, Cebaco Island, Sevilla Island, and 

 Insolita Island to S. h. chiriquensis. 



Specimens examined: Bugaba, 9^; Boqueron, 17'; Boquete, 17'; 

 Divala (type locality), 14.^ 



' Collection Mus. Comp. Zool. 



* Collection Amer. Mus. Nat. Hist. 



' Ten in collection Mus. Comp. Zool. ; seven in Amer. Mus. Nat. Hist. 



