418 



2308. The atlas of the same Three-banded Armadillo. 



It has no large transverse processes : the sides of the vertebrae appear to be truncate ; they 

 present near the back part a rudiment of a parapophysis and diapophysis. The side of the 

 vertebra is perforated anterior to them, and leads to a canal which bifurcates, one branch ter- 

 minating within the neural arch, above the articulation for the condyle, and the other perfo- 

 rating the neural arch. There is also a foramen at the back part of the hsemal arch, above 

 the articular surface for the odontoid. There is no spine either above or below the vertebral 

 ring. 



2309. The fourteen caudal vertebrae of the same Armadillo. 



The transverse processes are long, broad, and depressed, with their outer ends swollen into 

 a rugous kind of exostosis. The haemal spines of the last five vertebrae present a similar 

 modification at their extremities, which relates to the attachment of the dermal bony sheath 

 of the tail. Metapophyses begin to be developed upon the two caudal vertebrae, and con- 

 tinue after the anterior zygapophyses have disappeared on the seventh caudal. Haemapo- 

 physes are articulated to the interspaces between the second and third, and so on to the 

 seventh caudal vertebrae inclusive, and in the following vertebrae are directly articulated to 

 the under part of the centrum : they are flattened and expanded beneath. 



2310. The right scapula and clavicle of the same Armadillo. 



The clavicular half of the long acromion is an epiphysis. The coracoid is short and obtuse. 

 There is a tubercle beneath the glenoid cavity. The suprascapular element is represented by 

 a subtriangular coarsely ossified cartilage attached to the base of the scapula. 



/ 



2311. The right humerus of the same Armadillo. It is perforated above the inner 

 condyle. 



2312. The right radius, ulna, and bones of the fore-foot of the same Armadillo. 



The scaphoid is the smallest of the four bones of the proximal row. The large pisiform 

 articulates to the posterior interspace between the lunare and cuneiforme, and forms with the 

 lunare a large articular cavity, upon which the palmar patella plays. There is no distinct 

 trapezium : if its homologue exist in rudiment, it is connate with the trapezoides. The 

 magnum has coalesced with part of the base of the great cubical metacarpal of the digitus 

 medius. The outer part of the base of that metacarpal rests upon the unciforme, which also 

 supports the small but thick cubical metacarpus of the annularis, and the rudiment of the 

 metacarpal of the minimus. The medius and annularis have each but two phalanges ; the 

 long and slender index retains the normal number of three phalanges. 



