256 MEMOIRS OF THE CARNEGIE MUSEUM. 
Length of centrum along floor of neural canal..................-- 50 32 82 33 
Length of centrum along inferior surface........................ 45 51 25 33 
Vertical diameter of anterior face of centrum..................... 47 42 37 38 
Transverse diameter of anterior face of centrum.................. 51 42 44 38 
Vertical diameter of posterior face of centrum.................... 52 42 38 38 
Transverse diameter of posterior face of centrum including faces for 
eadsOk sass ssc ncs Pea ees Mee each eS Te eR 102 90 78 72 
Verticalidiametemonmeunrallycanalaemereme cence or enna ences 22 24 23 22 
‘iransyerseydiameter ofmeuralicanalleeeis eee aneee 27 24 22 22 
Antero-posterior diameter of prezygapophyses...............-.... 18 16 TG) ie eS AL 
Transverse diameter of prezygapophyses.................-..---- 15 18 NW ge Ti, Ws 13} 
Distancelacross prezycapophysesanc eee ene eetiae reac ener 52 55 44 44 
Antero-posterior diameter of postzygapophyses................-.- 27 21 13 20 
Transverse diameter of postzygapophyses..............-.-.------ 16 13 13 10 
IDistanceyacross PoOsuzyCapOpUyScsmee nee ee eer 59 48 BYE 40 
Horizontal diameter of anterior face for head of rib............... 31 22 17 18 
Transverse diameter of anterior face for head of rib............... 35 23 24 28 
Vertical diameter of posterior face for head of rib................. 3l 30 22 27 
Horizontal diameter of posterior face for head of rib.............. 27 23 18 18 
Antero-posterior diameter of face for tubercle of rib............... 22 24 19 15 
Transverse diameter of face for tubercle of rib................... 22 23 19 16 
sRtransverserdiameterso ls e CC’ ae RnnEn ner ener ern eran 39 32 26 26 
Antero-posterior diameter of pedicel...................-.+------ 26 28 22 21 
Distances between faces for head of rib.....................-++-- 75 HO), WG) hy WL tS 8 6 
Height of spine from neural canal to extremity................... 200 170 150 150 
Antero-posterior diameter of spine above neural canal............. 40 33 30 28 
Antero-posterior diameter of spine at top.................---++:- 32 29 25 21 
The Seventh Dorsal. 
We have four specimens of the seventh dorsal, Nos. 1604, 1708C, 1713, and 
1714. The seventh dorsal of No. 1604 is nearly perfect except that it has sustained 
some injury from crushing near the origin of the spine. No. 1703C is perfect in 
the region of the centrum, but the upper end of the spine has sustained some in- 
juries, though not enough to prevent its length and general measurements to be 
ascertained. No. 1714 has lost the posterior epiphysis of the centrum, the end 
of the right transverse process, and has also sustained some injury to the spine a 
little above the middle, which has been repaired at this point. No. 1713 has lost 
the posterior epiphysis of the centrum, but is otherwise perfect. 
The length of the spine in this vertebra is much less than in the preceding 
vertebra. It rakes backward. The transverse process tends to increase in its 
vertical dimensions and both before and behind reveals deep longitudinal trans- 
verse depressions, forming the anterior and posterior boundaries of the nascent 
