﻿MURIE ON THE THREE-BANDED ARMADILLO. 81 



evidently supported during life. A deep fold, occupied by wrinkled integument, sepa- 

 rates it from the hinder diyision of the foot, which bears the two lateral didts. 



Each of these lateral digits sends in a little rounded cushion directed downwards and 

 inwards, and which probably contributed its share in supporting the body, while the rest 

 of the sole of the foot, as far as the heel, has a thin wrinkled integument. 



Scales, with subjacent pencils of long hah-s, extend over the dorsum and sides of the 

 foot, as they do over corresponding regions of the manus. 



■ 



IV. Appahatijs for drawing the Body etc. together. 



Muscles of Carapace and subjacent Layer. 



Protractor of the Scapular Shield. — There is a broad muscle which extends from the 

 posterior part of the zygoma and meatus auditorius (outwards and backwards when the 

 head is protruded) to the inner surface of the second row of scutes in the pectoral shield, 

 and spreads out over the anterior fifth and lateral part of the shield. 



Contractor of the Scapular and Pelvic Shields.— T\ie rest of the inner surface of each 

 half of the pectoral shield is occupied by the broad and sheet-like anterior attachment of 

 a digastric muscle. The posterior fleshy fibres o^this muscle are similarly attaehod by a 

 broad expansion to the inner surface of each lateral half of the pelvic shield. The two 

 portions are connected beneath the movable zon6s by a flat silvery tendon, the fibres of 

 which cross each other, the deeper ones passing in front and to the outside, backwards 

 and inwards, while the superficial fibres take a course from ilic front and inside back- 

 wards and outwards. A broad aponeurotic membrane extends from the region of the 

 hindermost ribs to the front edge of the pelvic shield and the outer edge of this mem- 

 brane, which forms the basis of the partition between the anterior and posterior limb- 

 chambers, and plays the part of a sort of pulley. • I may further remark that tlic 

 numerous slips which ascend from the contractor in the six-banded Armadillo, rediKM^d 

 to three in Tolypeutes, are in the latter partiaUy separate from the great fore-and-aft 



plane of muscles {vide figs. 7 & 8). 



Protractor of the First movable Zone.— A muscle arises from the edge uf 

 movable zone (its third outer scute), near the middle line, and is inscrf < 

 anterior part of the spine of the scapula. The action of this muscle is to puU the 



d into the 



pula backwards ; or, if the scapula is fixed, its fibres draw the anterior mo\ 



forwards. 



Retractor of Scapular Shield.— There is a small thin sheet of muscle proceeding from 

 the vertebral angle (antero-superior) of the scapula ; and passing forwards and upwards, 

 it is inserted into the front part of the pectoral shield at about the middle Hue. 



These two last-mentioned muscles are both unroUers of the carapace, and they arc 



retractors of the sliield when the limb is fixed. 



Panniculus Car nosns.— This is but feebly developed, and forms a layer quite boneath 

 the preceding. It is, as usual, a broad sheet of fibres ; but the fleshy constituents arn 

 very scanty, giving it more the appearance of superficial fascia, or loose fibrous tunic, 

 than of a true muscular envelope. It is attached towards the middle line of the back 



VOL. XXX. ^ 



