49 



* v The length of the animal from the nose to the origin of the tail 

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

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

 examples have but four toes on 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 intermediate 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 j above this is a se- 

 cond parallel row of stiff white bristles j and over this, a third row 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 tubercles above the nail, 

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

 it has no horny points. The two outer toes, without tubercles, 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 brown 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 well as the rapidity of the motion, were very re- 

 markable. 



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

 heel, was placed upon the ground 3 of the anterior extremity the 

 toes only rested on the ground. 



u 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, forming a tube 2-10ths of an inch in 

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

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

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



a n o o 



Incisors 33 canine tt, molars jr~q« The incisors of the upper jaw are 



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

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

 of the lower jaw are slender and pointed j the molars somewhat dia- 

 mond or lozenge-shaped, with one indentation between each of the 

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

 terior molar teeth of each jaw, the last molar tooth, both above and 

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

 molars, the roof of the mouth presented four prominent tubercles ante- 

 rior to the usual rough expanse of the palate. The pharynx and eso- 

 phagus were narrow. The lungs were made up of one large and two 

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

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

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

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

 The spleen measured 1 inch and 7-10ths in length, and 6-10ths in 

 width. The stomach, a single cavity, without any apparent division, 

 measured 1 inch and 2-10ths in depth, in the direction of the entrance 



