50 



U. S. P. R. R. EXP. 



SURVEYS ZOOLOGY GENERAL REPORT. 



A very good specimen in alcohol, from Carlisle, Pennsylvania, agrees in the main with the 

 South Carolina specimen, as will be seen by the following description: 



Body small and rather slender ; head not very acutely pointed. Eyes small, scarcely visible. 

 Ears with the auricle directed forward entirely, the helix not as prominent as the highly 

 developed antitragus and antihelix, which are naked, with a ciliation of hairs on the edges only; 

 the anterior face of the ear naked ; the posterior covered with hair. 



The feet are rather broad and full ; the anterior large in proportion, longer than the distance 

 from heel to end of metatarsus. The fore and hind claws are of nearly the same size. The heel, 

 for about half the length of the metatarsus beneath, is entirely hairy, the hairs reaching to the 

 first pair of tubercles, but not between and beyond them. There are six large tubercles in all, 

 with smaller ones interspersed. 



The tail (exclusive of the hairs) is shorter than the head. It is rather thickened and obtuso 

 to the tip ; well covered with short hairs and terminated by a pencil. 



The upper parts are of a cinereous or dark ash, mixed and tipped with a dark wood-brown, 

 the ash showing through. The lower half of the sides and the under parts, generally, are of a 

 rather light ash-gray. The feet are white ; the tail bicolor. The skull has 30 teeth. The an 

 terior upper incisor has a basal pointed lobe about as long, but thicker than the third premolar. 

 The second and first premolars are long, the former largest ; they extend almost as far down as 

 the tip of the anterior incisor. There is a slight diastema between the third premolar and the 

 first molar. The fourth premolar is very rudimentary. The lower anterior incisor is long and 

 has two serrated lobes in its upper edge. It extends backwards as far as the second premolar 

 does, and to the first molar. 



The teeth of this specimen differ in some respects from the specimens of Sorex dnereus from 

 South Carolina ; they are much more deeply colored ; the upper anterior incisor longer and more 

 curved ; its basal lobe more distinct. The two anterior upper premolars are longer, more ver 

 tical, and pointed, more canine in appearance. The true molars are narrower. The lower an 

 terior incisors are larger, deeper, more curved, and more lobed ; the remaining teeth are 

 larger and higher. 



The measurement of this specimen will be found with that from Indian river. 



I do not feel sure that the Sorex dnereus of Bachman may not be the true S. parvus of Say, 

 as I am unable to appreciate the differences between the two, as described by Bachman and Say. 

 Perhaps the specimen from Carlisle is different from more southern ones may be the true 

 parvus. The solution of this question, however, as of many others in reference to the American 

 shrews, must be left until a greater number of specimens of different ages and seasons can be 

 brought together from many localities. 



List of specimens. 



