﻿Qg PR, J. MURIE ON THE THREE-BANDED ARMADILLO. 



In Chlamydophoms a condition of the cucullaris similar to tliat in Dasypxis obtains, as 

 also the additional part (=acromio-basilar ?). Hyrtl {I. c. p. 33) suggests the name of 

 " capitis extensores " to the planes in question, and afterwards shows the rhomboidei 

 and levator scapula are much as I shall describe. 



Bhomboidei.— The anterior of these, that to which r. capitis^ is applicable, springs by 



tendon from the back of the neck, and, at first fleshy and round, thickens and 

 broadens as it goes backwards to be fastened into the supraspinous fossa between the 



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strong 



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«; 



metacromial process and the anterior scapular angle. It lies entirely outside the inser- 

 tion of the protractor of the movable zones, and in its course it crosses the spmous and 

 other muscles of the neck. Ehomboideus major and minor are united, and at their origin 

 (second to fifth dorsal vertebrae) they are intimately connected with the Ion 

 dorsi. They have an insertion upon the scapula, its surface and vertebral border of spine 

 except so much as is occupied by the serratus magnus. 



Equally in the three- and many-banded Armadilloes and the ChUtmy dophorus there is 

 no trace of an omohyoid. 



The splenius in Tolypeutes is very long and narrow, but of tolerable bulk. By short 

 tendons it springs from the second, third, and fourth dorsal spines, and by a single smalj 

 but moderately strong tendon is fixed to the paramastoid (?) behind the meatus auditorius 

 externus. Assimilation of splenius capitis and colli obtains in Chlamy dophorus ; and the 

 next pair, as in Tolypeufes, are separate. There is a fulness in the first of these, the 

 complexus major, which arises from five anterior dorsal and two or three of the posterior 

 cervicals, being occipitally attached anteriorly ; the other, complexus minor, comes fron^ 



r 



the cervical transverse processes, and cranially is lodged beneath the tendon of the 

 plcnius. 



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The deep, short muscles of the back of the neck are fleshy, and altogether form a 

 defined V-shaped area between axial spine and occiput. Though partially coalesced, thq 

 usual divisions can be traced. The rectus capitis anticus major is mesially tendinous, 

 outwardly fleshy, and with oblique fibres. Anteriorly it is adherent to the basiocciput, 

 about the middle lies on the outer margins of the cervicals, and posteriorly enters the 

 cavity of the chest to the third dorsal body. There is a smaller, i. e. r. c. a.„niinor, with 

 normal attachments.- A representative of longus colli reaches from the second t9 sixth 

 cervicals ; its inner possesses obHque, its outer moiety longitudinal fibres 



Whether owing to nuchal semi-anchylosis or related to the disposition of transverse 

 processes and considerable calibre of the cervical plexus of nerves, &c., a scalenus anticus 

 IS deficient; and what trifling development of muscle there is appears to be homologous 

 with the s. posticus, or, mayhap, in addition, the s. medius of Man— an opinion enter- 

 taincd by Hyrtl (/. c). ■ 



Respecting sterno-mastoid I need alone repeat the fact that the authors so often 

 ^^^.A 7' T^ unanimously in genera of the Armadillo tribe separation into 



mT\ !h T . 'T'"'^'' '^'^^ ^ ^''^^'^ ^l^^M^r breadth of the former, and a 

 Partial attachment of the latter to the cartilage at the sternal end of the clavicle,, 



' Thb U the oocipito-scapular segment of Galton, Macalister. and others, andin part levator scapnl^ of Hyrtl. 



