SCIURIDAS—SPERMOPHILUS RICHARDSONI AND VARS. 857 
TaBLeE XCIX.— Measurements of nine skulls of SPERMOPMILUS RICHARDSON var. RICHARDSONI. 
. Ss S : a 
3 Silas sues 2 gy 
- Ei gE le Jes od 
Z 2/2 le |28/ 3 |agl= 
= 2 2 |= 6 S| a ls & 
5 Bee ee Ae alcheat| eae cals Alar: 
8 |, Sleaete deeieliiaey Ise || See a Wg) ae 
a | 3 i cay | esitecey, | ee Ss St Pe an a eee ere 
8 2 Locality. a & ies8 Elke iol |e ese Bale a | 36 
a | 6 Ae St at ee 8. (as |, SN eee lee 
} a I ees cee Nf Pete) ores Meee esate aan Wa 
& | ¢ eS ee pee Be ee ea ele 
S =| =i = = = = = Ss s be “ > be be 
le ame Saal teal reel) ae pal ciel e ante escal| Meme Me cal V ESTE eel 
= i>) - ° (= eee 3 3 \o a8) ac a Eelas iS 3 
oO cS n A o A A a A |p =) Bb |b =) 4 cI 
6630 1.75 | 1.10 } 0.40 | 0.60 | 0.15 0.52 | 0.95 | 0.28 | 0.15 | 0.40 | 1.08 | 0.48 
6631 1.£0 | 1.15 | 0.42 | 0.60 | 0.18 0.50 | 0.95 | 0.30 | 0.17 | 0.45 | 1.10 | 0.50 
6632 1.82 | 1.15 | 0.41 | 0.60 |.--... UB eer 0,28) |) \0518)| 2222. HO | Bes ose 
seacce 3308 | 7 miles west of} of | 1.90 | 1.27] 0.46 | 0.67 | 0.20 0.57 | 1.00 | 0.25 | 0.19 | 0.48 | 1.16 | 0.53 
Pembina Mts. 
Bae ace do ....-....----| 9 | 1.78 |.-.-- | 0.40 | 0.65 | 0.17 | 0.30 | 0.51 | 0.97 |......]......] 0.45 | 1.08 | 0. 49 
La Riviére Lac ..-.-. o | 1.78 | 1.17 | 0.40 | 0.62 | 0.20 | 0.32 | 0.50 | 0.98 | 0.27 | 0.18 | 0.40 | 1.06 | 0.55 
5 Tartle Mt .....-..-. rote || teteli) | Pesaro 0.37 | 0.67 | 0.17 | 0.30 | 0.55 | 1.03 | 0.26 | 0.20 | 0.45 | 1.15 | 0.50 
orsoce Solts| Somes essh of Lur- |G} |, 1.82)|=.--<-||.0: 3G.) 0.62) |... | 22... - oon aes|Saewec|occaee|coackes|ecoecnit) Le 080}) 0:49) 
tle Mt. 
sete 3) cP EA SEY = ae SSepsceen | ropa ie Bit Bose oel laser OSGOsOSTSH Sooo Oso nO: Gon pence | sen ee ll ose tenn ited 
Sd 
TaBLe C.—Measurements of thirteen skulls of SPERMOPHILUS RICHARDSONI var. TOWNSENDI. 
“Locality. 
hinder margin of palate. 
tween external edges. 
together, 
Upper incisors from front to 
molars. 
Catalogue-number. 
Total length. 
Greatest width. 
Distance between orbits. 
Nasal bones, length. 
Nasal bones, width behind. 
Nasal bones, width before. 
; Upper incisors from front to 
Upper incisors, height. 
Upper incisors, width be- 
Upper molars, length taken 
Lower jaw, length. 
Lower jaw, height. 
*13257 | Pleasant Valley, Utah ..- |.--- 
13260 | Teton Cajion, Utah.....-- ep 
713259 |..-... GI ismeno-seesocsse seed eee] MGT GIR OTH KOC On ee eeel Kessel Assocs 
3304 | Bridger’s Pass, Rocky Mts | ---| 1. ESTA S| Lees taesee| eeeee 
4196 | North Platte, Wyo. Ter ..-| ¢ | 1.70) 1. } } is Nees) | el Resse Een 21a 
4197 | Medicine Bow Mountains | ¢ | 1. 5 3 GE ened) eeoc BADE eeetenes . i MO pemere| beecee 
* Very old. t Quite young. 
