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34, DR. J. MURIE ON THE THREE-BANDED ARMADILLO. 



The hinge of generalization unfolding the homologies and significance of this pseud 

 complex system of cutaneous muscles, I believe, turns on the fact that the whole belon 

 to a single or partially double fleshy envelope, the panniculus carnosus. In some casf 

 this is most expansively distributed, in others reduced to a minimum. In one group of 

 vertebrates a limited portion alone may be well developed, which portion, on the 

 trary, is feebly represented, but not utterly absent, in another series of forms. Occa 

 sionally the fleshy fibres are very thick within a circumscribed area, and serve a special 

 purpose in the animal's economy. Again, even when moderate in quantity, a set of 

 fibres, by attachment or otherwise, may acquire prominence, and receive a name accord 



, Equally in Mammalia, Aves, and some Eej)tilia, superficial fasciculi, few or 

 numerous, emerge from the main mass, and act separately or in combination with the 

 diifused sheet, as erectors &c. of the tegumentary coverings and appendao'cs. On the 

 other hand, deep-placed bundles, sparse or abundant, interblend with the subjacent 

 muscles and fascige of the head, body, and limbs. Although generally recognized, and 

 differently named, from position, course of the fibres, or functional aptitude, the so-called 

 individual muscles of this harmonious fleshy cutaneous tunic thoroughly decussate the 

 one with the other. In this respect, therefore, the whole may appropriately be considered 

 in unity ; for it is only very exceptionally that beUy and tendon are present, or clear lines 

 of demarcation other than devious direction of fibres obtain. It is foreign to the pur- 

 port of the present paper to support the foregoing broad assertion by amplitude of proof. 

 The subject of itself is most interesting in a variety of ways ; and towards its elucidation 

 I trust ere long I shall find an opportunity of throwing together my notes and reflections 

 thereon in the form of a separate paper. In the present instance of Toly^eutes I 

 have distinguished by names afresh, as applied to their actions, the several muscular 

 s ips of shields and zones, desiring thereby to accentuate their uses rather than suppress 

 luem m a homoloffical cloak 



V. The Viscera. 



-F 



1. Contents of the Abdomen. 



kfMff n "^"^f ^" f "" ^*'^'"»'~^ riscera.~1h<, unusually large Uver occupies tte 

 the stomach!' l^ypoctondrium ; aud its left lobe also lies completely in front of 



and botwirti!!'^ °^ ^"^ stomach occupies comparatively a small space behind the liver; 



^Ploen conla ' "ftl 7''*™' °^ ^^^ '^°'^^''^ ^^^^ "'« ^"l^ed M kidney is the 

 a Ion" anterior ll„ , T'^' ™- ^ *°''' *"'"«'l lo'^e, turned towards the dorsal side, 

 'connects the soil w^At ' ^°^''' '^^''^ Posteriorly. The lesser omentum, which 



inner surface of the 1 "'""^'"^ '""^ °^ *^^ '*°"^°'>> P^^^''^ ^""^ ^^^ '^'^^^^ "^ "" 



o.ueut.im is continuouf tt ^l^ ^''^'''' ^'^ extremities of the lobes free. The great 

 "tomucU its whole len^tl T ""' ^""^ ^'^'^^^ °^ ^'■°™ ^^'^ Sweater curvature of tie 



then is reflected unwn.^ '' , v *^^°°* ^^^^'^ ^ continued back on to the duodenum, mi 



P »ards and backwards, forming a distinct omental pouch or sac. The 



