MURIDA—ARVICOLINAS—CUNICULUS. 243 
the first and only American specimens handled in this country since the time 
of Richardson. 
TaBLE LX.—Measurements of thirty-two specimens (dry, except 8398-9) of MyopEs OBENSIS. 
From tip of nose} Tail to 
to— end of— 
Fs Date. Locality. Collector. Ee sass Remarks. 
4 Sil elias: (iste Sal 
A RAJA LOIA IF |A/a |e 
1972 East Siberia .......... Mus. St.Petersburg 0. 65}... ./1, 40/6.50}....]..-. 0. 50/0. 75| Stretched. 
1462 |. Taimyr-land, Siberia ..| Museum Bremen..|..-.| --.|..../4. 75]... |....]....] ... 
5863 |. .| Frobisher’s Straits....| C. F. Hall.... -|----]---.|4. 60/0. 35]0. 60/0 45/0. 70) 
BT! eel ecco acadbasd loscoos GU) oseeeenccececse z -+-|----|2. 50)... ]....].---]....| Young. 
CYC eee aes en oss Peel’s River -- ---|---.|4. 75]0, 40/0. 70/0. 490, 80) 
BUBB ead Poocoseseosnsd Arctic Coast -- |----]---.]2. 75) .. |.---].-..]....] Young. 
(AE eed Pere aes bs Anderson River. .....- pea As eosaeacses 0. 55) L. 10}1. 25/4. 50/0, 40}0. 70)0. 40/0, 72) 
6923 |.-- +-=-|----|---.|4. 25]0. 45/0. 80/0. 420, 70) 
6838 |.-- we-|--+-]--+-/3. 25) 2. |.-../--..]....] Young. 
6935 |.--. ----|----|----/4. 25/0. 40/0. 80}... -}. 2. 
8078 |....| June 11, 1842} Fort Anderson..-...... Saas Ose cee cecee ae BEE ere aesel bSChN ol pass 0. 40:0. 75 
8079 |..-.| June 11, 1862 }.....-. Ci Rees Se Se bens OOisacasaeSccsoe Rca (osc (oe) ko) esa) Kaeieed (eee (esc 
8080 |....| June 14, 1862 0. 60)0. 35/0. 65, 
8031 |....| June 14, 1862 0. 80/0. 37,0. 68 
8082 |..-.| June 14, 1862 0. 70/0. 40,0. 73 
8083 |.-..| —— —, 1862 0. 60)0. 41/0. 74 
8084 |.-..| —— —, 1862 sen (Uhi7e4 
| - 8161 | Q | June 24, — 0. 75)0. 36,0. 67 
9162 |....| Oct. —, 1865 -.| --.|0. 35,0. 66) 
G33) | hese hececosseeenee beamed re . 47/0. . 60/0. 35)0. 75)0. 40:0, 70} Ale. ; ear 0.33. 
8D) | eee BS eee eel bes 4 JABS i : . }. 50}0. 90/0. 40.0. 72).----- do. 
} 8076 |....| June 10, 1862 0. 60)0. 35,0. 68) Stretched. 
) 8077 |....| June 10, 1862 0. 80/0. 42:0. 78 
6925 |....| May —, 1862 0. 70/0. 43,0. 78) Stretched. 
6926 |....| Spring, 1861 5\0. 80/0. 40:0. 74) Much stretched. 
6928 |....| June —, 1861 0. 80/0. 45/0, 82) 
6929 |....| June —, 1861 }. 0. 85)0. 40.0. 75) Stretched. 
6930 |....| May —, 1861 |. 0. 60)0. 39,0. 70 
6931 |....| June —, 1861 0. 80)0. 45.0. 80, Stretched. 
6932 |....| May —,—— 0. 85\6. 44/0. 80) . ---do. 
6933 |....| June —, —— |. : - B .---do. 
GOtSE che PA DTI — | Pelee tena cansecsseciceaoee| s=aonercesss~ece sobs aad ....|---.|0. 43.0. 68} Young; fresh. 
*At mouth of Porcupine River. 
Genus CUNICULUS, Wagler. 
Mus sp., Auct. antiq. 
Arvicola sp., Myodes sp., Lemmus sp., AuCT. recentior. 
Georychus, partim, RICHARDSON; AuD. & BACH. nec ILLIG. 
Cuniculus, WAGLER (‘‘Syst. 1830”), Isis, 1832, 1220. (Type, C. granlandicus = C. torquatus.)—LILLJEBORG, 
Syst. Ofvers. Gnag. Diiggdj., Glires, 1866, 23 (same type).—Cours, Proce. Acad. Nat. Sci. Phila. 
1874, 195. 
Misothermus, HENSEL, Zeits. Deutsch. Geol. Ges. vii, 1855, 492 (same type). 
Cuars.—Skull lower, broader, more massive than in Arvicola, rather less 
so than in AMyodes (zygomatic width not 3 the length), but in general char- 
