• The AmericcDi Volc^ of fhe (icnii)^ Erofovv/i^. 125 



Evotomys gappeii ihoadsi Stone. 



Evotomys gapperii rhoadsii Stone, Am. Nat., vol. XXYII, p. 5-4, Jan., 1893. 



Ti/pe localiti/. — Mays Landing, New Jer.sey. 



General characters.— i^imWav to tyitical (jappi ri but with .«lightly darker 

 dorsal stripe, less bufty sides, sli.ylitly shorter tail, and larger hind foot. 

 The body nieasurements, as well as the skulls, show the animal to be 

 identical in size with gapperi, the difference in dimensions appearing 

 only in length of tail and foot. 



Color. — Dorsal area, extending from l)etween ej^esto base of tail, plain 

 chestnut; sides buffy gray ; T)elly washed with buff or whitish ; tail, feet, 

 and ears as in gapperi. 



Measurements. — Average of 3 young adults from type locality, measured 

 in the flesh by J. Alden Loring: total length, 139.3; tail vertebrae, 36; 

 hind foot, 20. SknU (adult J^, No. 70()79) : basal length, 21.5 ; nasals, 7; 

 zygomatic breadth, 13.5 ; mastoid breadth, 11.3; alveolar length of upper 

 molar series, 5.2. 



General remarks. — Three adult topotypes collected by .J. Alden Loring 

 at Mays Landing, New Jersey, February 29 and March 1, agree in part 

 with the original description of the subspecies. The slight shortness of the 

 tail compared with that of typical gapperi is entirely within the range of 

 individual variation and discrepancies in methods of taking measni'e- 

 ments. If a more extensive series of specimens should prove the color 

 and foot characters inconstant, the subspecies will have to be given up. 

 With the material in hand I prefer to retain it, though other more 

 marked forms remain unnamed. The nearest localities to Mays Land- 

 ing, N. J., from whicli I have examined specimens of Erotomi/s are Wil- 

 mington, Mass., and near Renovo, Penn. These specimens are fairly 

 typical gapperi with no tendency toward rhoadsi, and INIr. Rhoads has 

 recorded gapperi from northern New Jersey and from INIonroe and Pike 

 counties, in northeastern Pennsylvania. 



Evotomys gapperi loringi,* subsp. nov. 



Tgpe from Portland, North Dakota, No. 75795, c? ad., U. S. Nat. Mus., 

 Biological Survey Coll. Collected Nov. 22, 1895, by J. Alden Loring. 

 Collector's number, 3438. 



Geographic distrihution. — Timbered valleys along edge of plains in Min- 

 nesota and eastern North and South Dakota. 



General characters. — Smallest Erotomys known in America, with bright 

 coloration and narrow, slender skull. 



Color.— Full winter pelage : dorsal stripe sharply defined, extending from 

 anterior base of ears back between ears to rump, pale reddish hazel, 

 scarcely darkened with black hairs and frosted from the presence of a 

 white subtermiual zone. In some specimens with themaxinunii of white 

 the back is fairly hoary, in others the chestnut predominates and con- 

 ceals the white zone. Face, sides, and rump, bright grayish ash, more 



* Named for the collector of the type series, ]Mr. J. Alden Loring. 



