54 The American Naturalist. [ January, 
Skull narrower, shallower, and, viewed from above, less angular than — 
that of cooperii, but of same length. Lower jaws viewed from below, 
ditto. Incisors shorter, broader, and less cylindrical, with sulcation 
of upper pair much more distinct. Zygomatic foramen longer and 
narrower. Sagittal suture and parietals relatively much longer; 
interparietal transversely narrower, longitudinally longer. Supra- — 
occipital in cooperii twice as wide as deep, in stonei thrice as wide as 
p. eo 
Molars one-third wider and one-eighth longer in stonei. In cooperii : 
the length of the symphysis mandibuli just equals the distance from 
its posterior end to the angle formed by the antero-inferior border 
of the masseteric fossa ; in stonei the symphysis i is one-third longer. 
Posterior face of angle of lower j jaw in stonei very stout, abruptly 
rounded, and recurved outward; in cooperii it is slender, spatulate, . 
elongated posteriorly in a nearly vertical plane, and the margin below 
the condyle not thickened as in the former species. : 
Measurements in millimeters of the New Jersey specimen in the 
flesh, with averages of six alcoholic specimens of cooperii, made by — 
Dr. Coues, are given : 
Full length. Tail. Foot. Ear. ; 
Synaptomys cooperii.......... 105 18 18 ba 
Synaptomys stonei 117 18 18 A 
The age of specimens on which the above cranial and color charac — 
ters are based is evidently about the same. In other respects they 
may be safely considered normal adult representatives of the species 2 
the different localities where they were taken. The new species may 
Curator of Birds in the Philadelphia Academy of Natural Sciences. — 
.SamuEL N. Rwoaps. 4 
-A New Evotomys from Southern New Jersey.—On October 
25, 1892, while collecting small mammals near May’s Landing, N 
Jersey, in company with Mr. S. N. Rhoads, I captured a specimen of 
Evotomys, a genus which has not previously been reported from souti 
of Massachusetts and the Adirondacks, except in the higher mountains 
of North Carolina, The next day three more specimens were secu 
and subsequently (December 2) Mr. Rhoads collected four others 5 
the same locality. A comparison of these specimens with a series 0 
Evotomys gapperii from Northern New York, which is apparently the 
most closely related form, shows them to be subspecifically distinct, 
put 
