i)ec. 191 J. SOME NOTES ON SUlUii US FIN LA YSONI, 227 



AND OTHER S(2i'IERELS OF STAM. 



j'iateaix and east to C'hautabun. Over iiincli of the same country 

 occurs a form (skull length about 50 mm.) to which the name hocourii 

 was applied by Milne-Edwards (tyj^e from Ayuthia', but this is such 

 an unstable squirrel and so many of the examples are nearly white 

 (Anderson records specimens '" white marked by great brown spots"), 

 that it is possible the name is invalid, being applied to aberrations 

 of linlatjsoni with which it closely agrees in size as do the g-eographical 

 races sinistralis (skull length about 49 mm ) from the Upper ^lenam 

 above Pichit, dextralis (skull length about 52 mm.) from the Meping 

 below Raheng, h/lei (skull length about 51 mm.) from Chiengmai, and 

 ■iiox (skull length about 53.5 mm.) from Siracha S. E, of Bangkok, all 

 described by Wroughton in the paper mentioned. 



The insular forms porfws and yb//e//?', mihi, from Koh Si Chang 

 and Koh Phai, with germaini, M-Edw., from Poulo Coridore are natu- 

 rally smaller (skull lengths about 47 mm.) having regard to the kind 

 of island they occup3'. The two former are subspecies of ///iZaysow?, 

 but the black geyniaiiii is so fixed and its locality so isolated and re- 

 mote that it may now well be regarded as a distinct species though in 

 appearance but a miniature nox, or alhicexilli. From the white 

 finlaijsoni to the black uox there is, one waj' or another through the 

 other forms, a complete gradation of colour. 



These conclusions may be tabulated somewhat after this 

 fashion. 



Mainland Islands 



sp. ferrugineus subsp. frandseni 



subsp. cinnamomeus 



sp. liarmandi 



sp. albivexilli 



subsp. portus 



subsp. folletti 



sp, germaini 



