166 
MONOGRAPHS OF NORTH AMERICAN RODENTIA. 
[The peculiarities of pelage of a part of these Illinois and Wisconsin 
specimens, constituting the variety dong7pilis, are discussed elsewhere. ] 
Before taking up the intricate questions that western specimens present, 
and to complete our review of eastern examples, we continue with a /ourth 
table, comprising all the rest of the dry specimens that have fallen under our 
observation from the United States east of the Mississippi. 
TABLE XLIL—List of specimens (additional to those of Tables XX XIX, XL, and XLI) of ARVICOLA RIPARIUS 
examined dry from the United States cast of the Mississippi, with measurements of many. 
= Tail to end z 2 
5 ay: of = a Ss 
3 Date. Locality. Collected by— |= J = S % Remarks. 
a ly 24| 8/2/28) 2 
a 18 Bo |e |e} a fe 
I 
2056 Bllbossoc dooccce Halifax, N.S.-.-... Dr. J.B. Gilpin..| 4.00 | 1.30 | 1.50 | 0.30 | 0.75 
GPE jose hessenss cone se] ssoce! Ol. aetecs a Sea has eens 3.75 | 1.30 | 1.45 | 0.32 | 0.76 
fray a3 Boones Labrador ...-.....- Dr. J. Wyman ..| 3.75 | 1.50 | 1.70 | 0.36 | 0.75 | Head 1.95. 
10285 — —,1856| Whi‘e Mountains, |-.---.-..--..-...-- |----- 1.20 | 2.00 } 0 33} 0.75 
| N.H. 
7780 —— —, 1864} E. Bethel, Vt.-..... C.S. Paine ..... fesllesacer atee emoc #PASeas Albino (= “albo ufes- 
cens’’). 
7 |) Ch |lexeeeea scene. 3urlington, Vt..... | Z. Thomps: n 450i de do) 190) ease 0. 88 
>| ected ec Rceete tel eece Gov esscus eee mac(lWesensancese 4.€6 | 1.70 | 1.90 | 0.36 | 0.77 | Head 1.25. 
Fei | somes ians coe cyl -eee ee QO . secseceence Oi. fo 2 eee 4.60 | 1.0 | 1.90 | 0.37 | 0.80 | Head 1.33. 
Gu | efil lpseeeciee baaee| Meco donde tegse2 BA) aac res 4.67 | 1.80 | 1.90 | 0.35 | 0.75 |....do. 
2 | ® | Aug. 21, 1863 | Wood's Hole, Mass. | S. F. Baird ..... 4.90 | 1.50 | 2.10 | 0.48 | 0. 86 
Oo} ¢ | Aung. 22, 1863 |...... doy AIS sedan tenes 4.50 | 1.0 | 1.80 |...-. | 0.78 
4 | ¢ | Sept. 2, 1863 |.-.... do\s eee Ot recente 4.25 | 1.50 | 1.70 | 0.39 | 0.82 
3 July 18, 1863 UN epescstcesocy ts ents OO een es 3.50 | 1.40 | 1.60 |.---- 0.79 
1 | 9 | July 23, 1863 |...... GY eSeeingerce zie iM cate oes 3350) 91s 25a Sol feces 0.79 
& |_...] Sept. 12, 1863 | Naushon, Mass.....|.--.do ........--.|.-.--- 1.60 | 1.95 | 0.40 | 0.82 
.--.] Sept. 12, 1863 i 4.80 | 1.80 | 2.10 | 0.41 | 0.83 
----| Sept. 8, 1863 |-.-.-- (Winastescacse SCH W geseseccns 55 | 1.55 | 1.85 | 0.40 | 0.80 
Q | July —, 1856} Muskeget I., Mass.-}| Dr. T. M. Brewer} 4.30 | 1.65 | 1.94 }...-- 0.85 | Nose to eye 0.56, to car 
1.08; head 1.35. 
2831 | ff | July —, 1856 ].-.... COMER ee a ee Benn OiBenetts Anes 4.67 | 1.84 | 2.24 | 0.45 | 0.90 | Nose to eye 0.59, to ear 
1.18; head 1.40. | 
$832 | cd | July —, 1856}.----. dO} ecn ese BAU Na see se see! |loecsoS SoSses essed [egsas|[eso 228 Very young; this and | 
Nos. 2330-1 types cf 
_ ‘“brewert”. 
AS ae | iguilecseaccetee = Hingham, Mass.... |..-.do ...-... 4.50 1.95 | 1.85 | 0.33 | 0.89 | Head 1.60 (?) 
Bite al tall ocasseeeee ee Seeece do Seesce geal Seed Oten-poocee ee 4.64 1.70 | 1,90 | 0.35 | 0.75 | Head 1.33. 
ey lca | Boeoaoeeeesas Holmes’ Hole, Mass } Dr. J. Wyman..| 4.20 | 1.55 | 1.85 |...... 0.82 | Type of “ rufidursum”. 
7938 | 9 | Sept. 15, 1863 |.-.-.. UE esas ese post eistbtnl ese 4.75 | 1.60 | 1.80 | 0.40 | 0.80 | Like “ rufidorsum”. 
947 |.-- | Oct. 22,1855 | Middleborough,Mass| J. W.P. Jenks . |.-----|------|.-----]------].----- | Young. 
eer) @ llsscsceseesee Nantucket.-.-....- | Prof. L. Agassiz | 4.20 | 1.40 | 1.55 | 0.34 | 0.85 | Head 1 25. 
Nov. —, 1895 | Newport, R.I ...--. S.Powell....... MEI AGRE | Heeg OSGI! | Wiech |p) AEE OU 
Nev. — 1855 |...... doe ee le eeagris were A\35 | 1960) [eee 0.40 | 0.81 t epee ren tee 
! Richardson. 
Nov. —, 1855 }...... dO}isss25 eases = No Pi otheedle sees 1.40 | 1.60 | 0.35 | 0.85 | Type of *‘nasuta”. 
aa nae New York City .....| G. N. Lawrence ---- | Very young. 
 |Sseecsce rece eaBses dO). seen seces dO nestsceose 4 0. 80 
SOUR RODEO ECE Pecos ARS saee nec 6a losoe MN Somnenc cnte 0.75 
So mSOH sO SSSES Essex County, N. Y | S. E. Hale. . Ss55s||[S-os<6 
Sept. —, 1855}... .. Os. sesene ec ccs eee 0.76 | Head 1.33. 
Eee terete Nichols, N.Y ......| R. Howe’l ae Young. 
Jevceeseecre ee Jose eee ido) 22 a=- gees Hudo” LeEECees 0.76 Head 1.40. } 
{ 
