396 Mr. R. C. Wrougliton 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 tliis animal tiie vague habitat " India," but 

 Lesson, who recognizes in a footnote [I.e.) tliat liis animal is 

 the same o.^ ferrugineus, locates it " from the vast forests of 

 Pegu.'' 



8c. 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 has a series of six specimens presented by- 

 Major Harington, who collected them at Rangoon. They 

 agree without variation with the above description. 



Dimensions of an old male : — 



Head and body 230 mm.; tail 225; hind foot 52; ear 20. 



Skull : greatest length 56 ; basilar length 44 ; zygomatic 

 breadth 33; brain-case breadth 25 ; interorbital breadth 19; 

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

 diastema i2'5 ; upper molar series 11. 



(2) Sciurus cinnamomeiis, Temm. 



1853. Sciurus cinnamomeus, Temminck, Esq. p. 250. 



1860. Sciurus simuensis, Gray, Ann. & Mag. Nat. Hist. v. p. 500(juv.). 



1801. Sciurus siAendens, 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. Vars. 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. I, on the other hand, is a very 

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

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

 teristic of Sc. hocoiirti sinistralis, lylei, &c. Var. 2 is inter- 

 mediate between theseextreme forms, and, 1 believe, represents 

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

 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 whicli 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 



