92 DR. J. E. GRAY ON A NEW SQUIRREL. [Mar. 12, 



in. lin. 



Breadth across the zygomatic arches 5 



Length of the nasal bones 3|- 



• of the palate, to its posterior notch .... 5^ 



. of the dental series, from the front of the 



upper canine to the posterior molar, inclusive 4 



Breadth of the palate between the canines 1| 



of the palate between the posterior molars 2 



Length of the lower jaw, from the posterior pro- 

 cess to the front of the symph>/sis menti 7^ 



Depth vertically from the coronoid process .... 2 

 Length of the dental series, from the front of the 

 lower canines to the hinder cusp of the last 



molar 4 



2. Description of a New Squirrel, in the British Mu- 

 seum, FROM New Granada. By Dr. John Edward Gray, 

 F.R.S.,V.P.Z.S. 



(Plate XVI.) 



Mr. Edward Gerrard lately brought to me a Squirrel that he had 

 not been able to identify with any other specimen in the Collection, 

 or with any of the American species lately described, and which he 

 was convinced was distinct from any of the American Squirrels of 

 about the same size in the Museum by the peculiar form of its skull. 



I have therefore drawn up a short description of the species, and 

 named it after my assistant, who has done so much to extend the 

 osteological collection in the Museum, and who is so ready to impart 

 his extensive knowledge of Vertebrate animals and their osteological 

 structure to any one who may desire to profit by it. 



SCIURUS gerrardi. (PI. XVI.) 



Blackish : hairs brown, with black tips, with a broad subapical 

 orange ring ; cheeks yellowish-brown ; fore part of the back, sides 

 of the neck and body, shoulders, and outer side of the fore legs, and 

 front of the hinder legs bright-red bay ; feet pale bay ; base of the 

 tail blackish, with the hairs slightly varied Avith pale orange rings ; 

 middle of the tail bright bay, end black ; throat from under the eyes, 

 inside of the fore legs, chest, and belly pure white ; ears blackish, 

 with very short scattered hairs. 



Hab. New Grauada. British Museum. * 



Size and form of the European Squirrel, but the tail longer and 

 the ears not pencilled. The skull is very different from that of Sc. 

 langsdorffi, being small and more lengthened. 



The newly born young specimen is coloured precisely like the adult ; 

 but the tail is slender, rather depressed, but nearly cylindrical, co- 

 vered with elongate close-pressed hair. 



