306 MEMOIRS OF THE CARNEGIE MUSEUM. 
MEASUREMENTS OF First LumBar VERTEBRA.?° 
1604, 
mm, 
Greatest height from base of centrum to top of spine......... 230 
Greatest transverse diameter measured across transverse 
PLOCESSES 255 odie cle Bate More wiferce ah sees toca ae tee ena ee ee 176 
Greatest antero-posterior diameter measured from front of 
prezygapophyses to back of postzygapophyses........... 110 
Length of centrum along floor of neural canal............... 66 
Length of centrum along inferior surface................... 51 
Vertical diameter of anterior face of centrum................ 62 
Transverse diameter of anterior face of centrum............. 80 
Vertical diameter of posterior face of centrum............... 70 
Transverse diameter of posterior face of centrum............ 86 
Vertical diameter of neural canal.....................-20-. 23 
Transverse diameter of neural canal....................... 23 
Antero-posterior diameter of prezygapophysial surfaces....... 26 
Transverse diameter of prezygapophysial surfaces........... 26 
Distance between prezygapophysial surfaces above.......... 62 
Antero-posterior diameter of postzygapophyses.............. 29 
Perpendicular diameter of postzygapophyses................ 35 
Distance across postzygapophyses above.............-...-- 42 
Transverse diameter of pedicel above transverse process. ..... 15 
Antero-posterior diameter of pedicel.................+-..-- 55 
Height of spine from neural canal to extremity.............. 153 
Antero-posterior diameter of spine above neural canal........ 70 
Antero-posterior diameter of spine at top................... 70 
Height of metapophysis above prezygapophysial surfaces... .. 32 
Height of metapophysis above transverse process............ 60 
Antero-posterior diameter of metapophysis below............ 45 
Antero-posterior diameter of metapophysis at end........... 18 
Distance across ends of metapophyses....................-- 108 
17038C, 
mm. 
173 
134 
84 
116 
The Second Lumbar Vertebra. 
The second lumbar vertebra of No. 1604 was found in almost perfect condition. 
Four other second lumbars were recovered. Of these specimens No. 1708C is quite 
perfect. No. 1708 is a centrum preserving the outline of the neural arch, though 
without any of the lateral and superior processes. 
1708, 
mm. 
60 
50 
-60 
70 
56 
82 
22 
20 
30 
30 
55 
15 
45 
1713, 1714A, 1714B, 1714C, 
mm. 
203 
135 
104 
50 
42 
140 
28 
mm. 
145 
124 
mm. 
149 
mm. 
148 
130 
22 
No. 1718 is practically perfect 
except for the loss of the anterior and posterior epiphyses of the centrum and the 
transverse processes at their ends. No. 1714D has lost the epiphyses of the cen- 
trum, the greater portion of the dorsal spine, both transverse processes, and the 
end of the metapophysis of the left side. 
© Numbers in italics indicate approximate measurements, 
