﻿92 



J. MURIE ON THE THREE-BANDED ARMADILLO 



, „. to stop here, but is continued superflciaUy on to the under 

 muscle does not appear r ^^.^ ^^^ ^^ definition, merges into what I take 



surface of the tongue, ana, ^ ^^^^^ ^^^,^^. ^^^ ^^^^^ ^^ ^^^^ ^^^^^ ^^^^^_ 



to he the mylohyoid- »* "« " ^^^^ ,t the inferior root. 

 ''i:: ^'^'ftSi h V n " ll Ve, l^ut together form a long, flat, narrow, 

 tapelg'pt e ttd to the lower inner margin of each half of the horizontal mandiju^ 

 rimr and po teriorly attached to the hyoid, bemg contmuous as aho.e said, with the 

 Z^loidei. Beneath the preceding ai-e two long narrow bands, with symphysul and 

 San attachments, to wit, the geniohyoidei. Jhe P-' pf hyoglossus muscles do not 

 Zt in the middle line, and posteriorly are affixed to the ceratohyals The gemo- 

 hyoglossi are very characteristic and structurally compound Rearwards their internal 

 portions are fastened to the basihyal between the geniohyoidei ; andtheir exterior more 

 fo the epihyals. Each styloglossus is a weak and narrow slip, situate ,n front of the hypo. 

 Glossal nerve, and from the cranial origin of the stylohyal proceeds forwards and jom, 



the hvo-lossus muscle outside and opposite the dovetailing of the gemohyoglossus. 



A nanow weak sUp, representative of stylohyoid, and a better-marked broader stylo- 

 pharyngeus are readUy distinguished. The oonstrictores and other pharyngeal musdes 



I did not follow with desirable accuracy. 



The isthmus and pillars of the fauces are well defined ; and from the prominence of the 



middle and two lateral glosso-epiglottic membranous folds a pair of fair-sized fossa 

 obtain at the rear of the tongue. The small tonsils are very distinct, each, however, 



being hidden in a faucial recess, the fore part of which they occupy. The velum pen- 

 dulum palati is worthy of the name, as it constitutes a wide-arched curtain, which m 



its 



the usual contracted condition reduces the pharyngeal passage to an opening jo 

 inch in diameter. When looked at from the front (see sketch, fig. 19). this narrow 

 nporture appears split in two by the epiglottic septum, and superiorly is overhung hy a 



relatively large and thick uvula. ' 



A second sketch, also of natural size, which I have shown in jSg. 20, displays the 

 pharyngeal cavity, the soft palate being divided and thrown hack. In this the three 

 fracnula, or glosso-epiglottic folds, are hrought into relief, as are a couple of depressions 

 between them and the epiglottis. The pharyngeal cavity is of a good size, 

 hranous walls only of moderate thickness and thrown into a few lateral parallel tolas 

 hclow. On each side of the larynx is an external laryngeal fossa, deepish elliptical- 

 shaped and 0-2 inch long. Although the mucous surface is somewhat smooth, it is 

 plentifully supplied with glands. 



Tlie oesophagus is some 2^ inches long, and rather wide, its fleshy coat being well 

 developed. Superiorly there are several longitudinal narrow plicae; but inferiorly its 

 inner lining is smoother. Here and there, especially towards the pharyngeal extremity, 

 are small raised seed-shaped glands ; but besides these, and distributed everywhere, are 

 minute orifices or glandular puncta, 



Eyoid and Xarynx.— The thyro- and basihyals are bony, firmly anchylosed together, 

 i^nd with an anterior mesial carina. Each osseous moiety is 0*4 inch long. Laterally 

 It exhibits a widish spear-shaped plate, with deepish and wide basal emarginations- 



