396 Mr. E,. C. Wroughton on the Forms of Squirrel 



(1) Sciurus ferrugineus, F. Cuv. 



1829. Sciurus ferrugineus, F. Cuvier, Mamm. pi. ccxxxviii. 



1830. Sciurus keraudreni, Lesson, Cent. Zool. pi. i. 



Cuvier gives for this animal the vague habitat " India," but 

 Lesson, who recognizes in a footnote (I.e.) that his animal is 

 the same as ferrugineus, locates it " from the vast forests of 

 Pegu/' 



tic. ferrugineus is a uniform red-brown (between hazel and 

 chestnut) except (as pointed out by both the authors quoted 

 above) that the extreme tip of the tail is white and the hands 

 and feet black. 



The Museum ha3 a series of six specimens presented by 

 Major Harington, who collected them at Rangoon. They 

 aoree without variation with the above description. 



O pill 



Dimensions of an old male: — 



Head and body 230 mm. ; tail 225 ; hind foot 52 ; ear \ 



Skull: greatest length 56 ; basilar length 44; zygomatic 



breadth 33; brain-case breadth 2o ; interorbital breadth 19; 



nasals, length 16"5, proximal breadth 4'2, distal breadth 8; 



diastema 12*5 ; upper molar series 11. 



(2) Sciurus cinnamomeus } Temm. 



] 853. Sciurus cinnamomeus, Temminck, Esq. p. 250. 



1860. Sciurus siame/tsis, Gray, Ann. & Mag. Nat Hist. v. p. 600(juv.). 



1801. Sciurus splendens, Gray, P. Z. S. p. 137. 



This is a most variable form. The type of siamensis is a 

 quite young animal, but is interesting in being entirely 

 grizzled orange-red on black, above. The four specimens 

 described as varieties 1, 2, 3, and 4 of splendens by Gray I 

 have examined. Vara. 3 and 4 are very pale specimens (paler 

 than orange-rufous), and one of them shows traces of grizzling 

 on the limbs and cheeks ; var. 1, on the other hand, is a very 

 dark specimen (near bay), unicoloured except for an abnormal 

 white patch on the tail, which recalls the similar patch charac- 

 teristic of Sc. bocourti sinistralisy lylei, &c. Var. 2 is inter- 

 mediate between these extreme forms, and, 1 believe, represents 

 the normal one. A specimen collected by Capt. S. S. Fiower 

 at Chantaboon agrees closely with it, though still showing 

 faint traces of grizzling on the limbs and cheeks. Finally, 

 there is a series of six specimens collected by Mr. Lyle on 

 the upper Me Nam which differ little from this type except 

 that the under surface is darker, and thus the whole animal 

 is unicolorous (near cinnamon-rufous). The tendency to 

 develop a white tail-tip is evident in all these specimens, and 



