49 



" The length of the aniinal fiom the nose to the origin of the tail 

 is eight inches ; of the tail itself, one inch. The general external le- 

 semblance to the well-known Lemmings has been noticed, but these 

 examples have but four toes ou each foot, with one small naked pad 

 under each toe : the two middle toes are the longest and equal, the 

 outer toe the shortest, the inner toe intevmediate in length, and on 

 the hind feet of remarkable structure. 



" Immediately above a short curved nail there is a transverse row 

 of horny points forming a pectinated apparatus ; above this is a se- 

 cond parallel rovv of stiflF white biistles ; and over this, a third iow of 

 bristles, which are much longer and more flexible : there are thus 

 three distinct parallel rows of points of unequal firmness. The toe 

 next the inner one has two small fleshy lubercles above the nail, 

 covered by tvvo rows of bristles, the under one short, the upper long ; 

 it has no horny points. The tvvo outer toes, without tubercies, have 

 each only one tuft of long bristles. 



" With this described comb-like instrument on the inner toe only 

 of each hind foot, the little animals were observed to be continually 

 dressing their soft light brovvn fur ; and the facility with which they 

 managed to reach every part of each lateral half with the toe of the 

 foot on that side, as vvell as the rapidity of the motion, vvere very re- 

 markable. 



" When walking, the whole length of the hinder foot, from toe to 

 heel, was placed upon the ground j of the anterior extremity the 

 toes only rested on the ground. 



" When deprived of the skin, the head appears large compared to 

 the bulk of the body ; it is wide and flattened in form : the meatus au- 

 ditorius externus is elongated, forniing a tube 2-lOths of an inch in 

 length on the inferior surface, and lined vvith a dense black pigment. 

 No cheek pouches exist. The teeth are of singular character, 



the molavs of the upper and under jaws being decidedly different. 



2 Q 3 3 



Incisors 5; canine tt, molars gn-į- The incisors of the upper javv are 



stout, square and truncated j the molars are oblong, flat and plain 

 on the inside, vvith one indentation on the outerside. The incisors 

 of the lovver javv are slender and pointed ; the molars somevvhat dia- 

 mond or lozenge-shaped, vvith one indentation betvveen each of the 

 four angles. This character more particularly applies to the tvvo an- 

 terior molar teeth of each javv, the lašt molar tooth, both above and 

 belovv, being more elongated. From the superior incisors to the 

 molars, the roof of themouth presented four prominent tubercies ante- 

 rior to the usual rough expanse of the palate. The pharyni and ceso- 

 phagus were narrovv. The lungs vvere made up of one large and tvvo 

 small lobes on each side ; the heart presented nothing remarkable. 

 The liver paler than natūrai, soft, and granulated in appearance, was 

 composed of tvvo small and one large lobe on the right side, and tvvo 

 equal-sized lobes on the left : the gall-bladder large and spherical. 

 The spleen measured 1 inch and 7-lOths in length, and 6-lOths in 

 width. The stomach, a single cavity, vvithout any apparent division, 

 measured 1 inch and 2-lOths in depth, in the direction of the entrance 



