EDENTATA OF THE SANTA CRUZ BEDS. 



227 



MEASUREMENTS. 



First thoracic, height of spine from cen- 

 trum 038 



First thoracic, width of spine at tip 017 



Third thoracic, length of centrum 019 



" " width over transverse 



processes 041 



Third thoracic, height of neural spine. . .033 

 " " width of neural spine at 



tip oio 



Last thoracic, length of centrum 02 1 



" " width of anterior face ... .022 



" " width over transverse 



processes ,. 7.049 



Last thoracic, height of neural spine . . . .040 

 " " width of neural spine. . . .018 



First lumbar, length of centrum 025 



" " width of anterior face 025 



" " width over transverse pro- 

 cesses 080 



First lumbar, height of neural spine 044 



" " width of spine at tip 020 



Second lumbar, length of centrum 026 



" " width of anterior face. .025 



Third lumbar, length of centrum 023 



width of anterior face 026 



width over transverse 



processes 064 



Third lumbar, height of neural spine. . . .047 



Fourth lumbar, length of centrum 025 



" " width of anterior face . . .026 



" " height of neural spine ., .045 



First sacral, width of anterior face 029 



Last sacral, width of posterior face 026 



First caudal, length of centrum 019 



" " width of anterior face 023 



" " width over transverse pro- 

 cesses 076 



Second caudal, length of centrum 018 



" " width of anterior face . . .023 



" " width over transverse 



processes 070 



Third caudal, length of centrum 020 



" " width of anterior face 021 



" " width over transverse 



processes 060 



Fourth caudal, length of centrum 021 



" " width of anterior face .. .020 



" " width over transverse 



processes 056 



Fifth caudal, length of centrum 02 1 



" " width of anterior face 019 



" " width over transverse pro- 

 cesses 055 



Sixth caudal, length of centrum 020 



" " width of anterior face 018 



" " width over transverse pro- 

 cesses. 052 



Seventh caudal, length of centrum 019 



" " width of anterior face .. .016 



" " width over transverse 



processes 046 



Appendicular Skeleton. The scapula has a short, broad blade, divided 

 by the spine into fossae of nearly equal width ; the suprascapular border 

 is quite short and anteriorly curves gradually into the coracoid border, 

 while behind it forms a decided angle with the glenoid border; the latter 

 is much thickened on the neck of the scapula and, though thinning away 

 proximally, remains a distinct ridge for most of its length. The neck of 

 the scapula, even excluding the coracoid, is very broad and short. The 

 spine is of moderate height and pursues a somewhat curved course, end- 

 ing in a very large acromion, which unites with the coracoid, as in all 

 known Gravigrada. The coracoid is very large, forming the anterior third 



