SCIURUS. 267 



Macroxus vittatus, F. Cuvier^ Hist. Nat. des Mammif. Oct. 1821^ pi. 234; Gray^ Ann. and Mag. 



Nat. Hist. vol. xx. 1867, p. 278 (in part). 

 Macroxus toupai, Lesson, Man. de Zool. 1827, p. 238. 



This squirrel is about the same size as S. nigrovittatus. It is 8 inches long, 

 and the tail nearly the same length. It diflPers from aS'. nigrovittatus in the rich 

 brownish-red of its under parts, in the more defined character of the lateral white 

 and black lines, in the generally slightly finer character of the annulations of the 

 upper fur, and in the more coarsely annulated tail which has always a bright red tip. 

 The ear is rounded and covered with short hairs. 



In the type of S. vittatus, the lateral white streak is rery distinct, but the dark 

 streak is not black, but only a darker shade of the b^r colour, not very well 

 defined and grizzled orange-blackish. 



This species does not appear to be subject to much variation, and any that it 

 does exhibit cannot be said to be distinctive of, or confined to, a special locality. It 

 is generally distributed over the Malayan peninsula, Sumatra, Borneo, and, according 

 to Miiller and Schlegel, Canton. 



It would require a much more extensive series of specimens than is at 

 my disposal to determine definitely whether or not S. vittatus is a local race of 

 S. plant ani. These facts, however, are to be borne in mind, first, that the grizzled 

 annulation of the hair of the two so-called species conforms to a definite plan of 

 distribution, and next, that the lineation of the side is also referable to a common 

 type, the differences that exist between the two being only a question of the inten- 

 sity of the colour of the pigment. They are both distinguished by the ventral area 

 being distinct in its coloration from the back, from the colour of which it is separated 

 by a dark and by a light-coloured band. This circumstance is also met with, that 

 squirrels are found in Borneo and Western Java which the observer hesitates to 

 refer to either of the species, because they seem equally referable to both. One 

 variety leads into another, so that even extreme varieties are incontestably linked 

 together by intermediate forms. 



SCIURUS PLANTANI, Ljung. 



Plantane Squirrel, Pennant, Hist. Quad. 2nd ed. 1792, vol. ii. p. 151. 



? Sciunis notatus, Boddaert, Elench. Animal, 1785, p. 119. 



Sciurus plantani, S. I. Ljung, Kongl. Vetensk Acad. N. Handl. vol. xxii. 1801, p. 99, pi. i. ; Hors- 



field, Zool. Reseh. Java, 1824 (plate) ; Cat. Mamm. E. Ind. Co.'s Mus. 1851, p. 151; Lesson, 



Man. de Zool. 1827, p. 236; Fischer, Syn. Mamm. 1829, p. 357; Wagner, Schreber, Saugeth. 



Suppl. vol. iii. 1843, p. 197 in part; Gray, Hand-List, B. M. 1843, p. 141 ; Ann. and Mag. Nat. 



Hist. vol. i. 4th ser. 1868, p. 309; Schinz, Syn. Mamm. vol. ii. 1845, p. 37 ; Zelebor, Reise der 



Freg. Nov. Saugeth. 1868, p. 24. 

 Sciurus gimjianus var. Plantane Squirrel, Shaw, Genl. Zool. vol. ii. pi. i. 1801, p. 147. 

 Sciurus bilineatus, Desmarest, Nouv. Diet. d'Hist. Nat. vol. x. 1817, p. 106 ; Mamm. 1823, p. 336; 



Desmoulins, Diet. Class. Sc. Nat. vol. vi. 1824, p. 72. 

 Sci^orus nigrovittatus, HoY^M^^ZooX. Resch. Java, 1824; Cat. Mamm. E. Ind. Co.'s Mus. 1851, 



p. 152; Fischer, Syn. Mamm. 1829, p. 354; Gray, Hand-List Mamm. B. M. 1843, p. 141; 



