Four new European Squirrels. 429 



pfvizzled along median region below, and the back is niucli 

 darkened by a blackisli suffusion. 



Colour variation shows itself chiefly in the greater or less 

 tendency to assume the dark phase. Occasionally the hazel 

 of sides brightens nearly to a dull rufous and spreads to 

 lateral portion of dorsal area, the portion bordering white o£ 

 ventral surface at tlie same time becoming nearly buff. Ear- 

 tufts either blackish or reddish. 



Skull and teeth. — The skull and teeth are intermediate in 

 size between those of the ordinary Central-European forms 

 (russus and rutilans) and the large S. infuscatus. In form 

 tiiey show no special peculiarities. 



Measurements. — Type : head and body 237 mm. ; tail- 

 vertebrai 230 ; hind foot && ; ear from meatus 34. Skull : 

 condylo-basal length 50; zygomatic breadth 33; mastoid 

 breadth 26; postorbital constriction 17'4; interorbital con- 

 striction 18"8 ; rostral breadth at front of nasals 8'2 ; 

 nasals 16; diastema 13; mandible 34; maxillary tooth- 

 row 9'8 ; mandibular tooth-row 10. 



Specimens examined. — Nineteen, from the following 

 localities : — France, Solferino, Landes, 1 ; St. Jean de Luz, 

 Basses Pyrenees, 1 : Spain, Sierra de Dubros, Asturias, 2 ; 

 Arrechavaleta, Vitoria, 2 ; Panticosa, Huesca, G ; Pinares de 

 Quintanar de la Sierra, Burgos, 7. 



Remarks. — This squirrel is evidently the Sciurus sp. ? of 

 Mr. Cabrera's review of the Spanish members of the genus, 

 as its characters agree with those assigned to this problematic 

 form. It is also without much doubt the rufus of the same 

 paper, though on this point the evidence is not so clear. 

 Whatever the squirrel of the Lower Ebro Valley may be, it 

 is very unlikely to prove identical with either russus or 

 rutilans, the two forms confused under the name rufus at the 

 time when Mr. Cabrera wrote. 



Sciurus vulgaris Ulceus, subsp. n. 



1906. Sciurus vulgaris italicus, Trouessart, Bull. Mus. d'Hist. Nat, 

 Pari8, xii. p. 364 (part.). 



Type. — Young adult female (skin and skull). B.M. 

 no. 7.9.8.1. Agoriani, north side of L3'akura (Parnassus) Mts., 

 Greece. Received from VVilhelm Schluter. 



Diagnosis. — Colour in brown phase peculiar in the notice- 

 able contrast of the very dark almost blackish posterior half 

 of back with hair-brown shoulders and neck, lied phase not 

 known, and probably rare or absent. 



Colour. — Type : general colour above a grizzled hair- 



