226 
PATAGONIAN EXPEDITIONS 1 PALAEONTOLOGY. 
Measurements. 
No. 15,003. No. 15,131 • No. 15,118. No. 15,382. No. 15,983- 
Skull, length in med. basal line . 
.236 
•245 
.238 
“ fr. occ. condyles 
•253 
.256 
.258 
“ fr. occ. crest to end of 
nasals ...... 
.224 
Cranium, length fr. cond. to orbit 
.148 
•145 
.146 
.151 
Face, length fr. orbit to prmx. . 
•115 
.116 
.117 
.117 
Occiput, height 
.101 
.085 
width at base 
.104 
?.I2I 
•133 
“ over condyles 
.051 
•054 
•059 
.061 
Sagittal crest, length .... 
.087 
.082 
Zygomatic arch, length fr. glen. cav. . 
.088 
.100 
•093 
.096 
.08l 
“ width (dorso-vent.) . 
•039 
.048 
.048 
Cranium, width at constriction . 
.030 
•034 
.042 
•039 
zygomatic width . 
•139 
•154 
.l6l 
.l80 
depth at tympanic bulla 
.107 
.110 
.102 
Face, width over lachrymals 
.070 
.080 
.084 
prmx. . 
.049 
.047 
“ depth at m- .... 
.099 
.098 
.083 
•095 
“ “ “ p* 
.080 
.079 
.06l 
.079 
Nasals, length ..... 
.101 
.092 
.105 
.101 
Palate, length in median line 
•153 
.152 
•143 
•145 
“ width at p 1 
.018 
.023 
.022 
.024 
“ “ 14 m^ . 
•054 
.040 
.052 
.048 
Mandible, length (excl. teeth) 
.202 
.212 
“ of symphysis . 
•054 
width at i^. 
.031 
.042 
depth at p^ 
.041 
•039 
U ll ll __ 
ms- 
•045 
.050 
height of coronoid 
•125 
“ “ “ condyle 
.124 
width, angle to m3 
.084 
.084 
In some respects these measurements are misleading, owing to the dis- 
tortion of the skulls through pressure. Nos. 15,003 and 15,982 are almost 
free from distortion, though in the latter the great zygomatic breadth may 
have been somewhat exaggerated. No. 15,118 is slightly asymmetrical, 
but in Nos. 15,181 and 15,382 material changes in the proportions of the 
skull have been caused by pressure ; the former has suffered from a lateral 
compression, which has notably diminished the transverse dimensions, 
while in the latter the compression was vertical, increasing the transverse 
and decreasing the vertical dimensions, except in the case of the palate, 
which appears to be normal. 
