MURIDZ—ARVICOLINAI—CUNICULUS TORQUATUS. 2 ill 
TaBLEe LXI.—Measurements of sixty-eight (and list of other) specimens of CUNICULUS TORQUATUS—Cont’d. 
Tail to 
Nose to— 
a end of— 
Locality. Collector. z are Remarks. 
. = 
A=) al+ & 4 s 
Sidi iia | s | s 
ClH|F|/AR)/ a] a 
iL. 25/4, 25/0. 350. 90)... 0. 62} ¢ ; June 26; perfect pelage. { 
---|4. 50)0. 40/1. 00). __.|0.64) 9 ; June 26; perfect pelage. 
--/4, 50/0, 35)0. 90)... |0. 62) 9 ; June 26; perfect pelage. 
- -|5. 00/0. 30/0. 65/0. 55/0. 65) Pure white, with dark spinal stripe. 
--|5, 00/0, 40/1. 00/0. 55/0. 60) Changing pelage. 
<-]----|!). 20]. ---|----10. 50)0. 60) ..---- do. 
1, 20/3, 25/0. 40/0. 80/0. 60/0. 68) ...... do. 
Sod bacel |. -.|0. 58}....| July 4; perfect pelage. 
1, 20/4. 25)... |.-- |0.55]0. 60] June; perfect pelage. 
--.|4. 00/9. 35/0. 75,0. 60/0, 68) Entirely white. 
- |5. 00)0. 30)0. 80/0. 65/0. 70) ....-. do. 
3.50). ...|.--.]0.57)0. 62) May 29; summer pelage nearly 
perfected. 
Kes See -.|4. 75)... |.--./0.60/0.75 Summer ; perfect pelage. 
0. 55]1. 10/1. 26/4, 50,0. 40/1. 00/0, 55/0. 62) June 6; perfect pelage. 
- |4, 00/0, 30/0. 85)0. 58/0 65 ?; nearly perfect pelage. 
--|4, 25)... |. -..]0. 55/0. 70) --.-.- do. 
wee tO] oc sets as) |Os0410) 63) <0 0 ene do. 
---{----]--- {4..50(0, 40/0, 75/0. 52/0. 60) Summer ; perfect pelage. 
mill etetste | erete 4. 75)0, 45)0. 95,0. 52/0, 60) ...--. do. 
.|--- |----]3..50)0. 40)1. 00:0. 58/0. 68) June 7; very rich colors. 
Sacal| S65 Pae|ee=.| eae |e==|0) Dol Monng. 
Al) Goel soo see bSeq] Besa laos! SS tetas do. 
../0. 48) Young. 
--- | --.|.--.|4. 25.0. 35.0. 85,0, 65/0. 68] Winter ; perfectly white. 
see-|----] ~-./4, 000, 25,0. 65)... ./0. 55) Summer pelage. 
eee | eae ---/4, 50.0. 30.0. 80 0. 56)0. 62, ...... do. 
deca |sene| Sere 7. 00.0. 40.1. 25,0. 60)0. 65) Summer pelage ; greatly stretch'd. 
0. G5) L. 35) 1. 55,6. 00). ...|..../0. 65/0. 72) Summer pelage ; much stretched. 
0, 60) 1. 25/1. 40/5, 50 0, 35/1. 00 0. 58/0. 66] Summer pelage. 
--/0. 55/1. 10}1. 30,5, 25 0. 40 1. 10 0. 58/0. 68) ....-.. do. 
~---| ---/4.00)....]..../0. 65/0. 70) Winter; almost white. 
* Contained 5 embryos (McFartane). 
Genus FIBER, Cuvier. 
< Castor, LInn., Syst. Nat. i, 1766, 78. 
< Mus, GM., Syst. Nat. i, 1788, 125. 
X Myocastor, Kure, “L. 8. N. 1792 (type Myopotamus coypus).” 
= Fiber, Cuv., “Legons, i, 1800 (type Castor zibethicus).” 
< Lenmus, Fiscurr, Syn. 1829, 289. ' 
= Ondatra, “ Lactpipr.”—Lxess., Man. 1827, 286 (type Castor zibethicus). 
Cuars.—Largest of the family. Form arvicoline, but tail nearly as long 
as body without head, compressed, nearly naked, reticulate. Hind feet set 
obliquely; soles naked, quadri-tuberculate ; toes incompletely webbed. Fore 
arin bristle-fringed. Muffle hairy, except the nasal pads. Ears small, with 
