﻿106 



DR. J. MURIE 



ARMADILLO 



mrallel direction forwards, one being fixed to the lateral cartilage of the nostril ; the other 



deHcate, goes more downwards and terminates on the lowest lateral cartilag 



more 



-sesamoid ?) The terminal branches of the infraorbital nerves so intertwine with the 

 'tendons as to make the latter be mistaken for nervous cords. 



3 From the infraorbital region there is a short, broadish, entirely fleshy layer, which 

 strikes obliquely downwards towards the upper lip, near the angle of the mouth. 



4. There is a long levator labii inferioris corresponding in part with the nasal retrac-^ 

 tors', but quite single and weaker than these ; it blends rearwards with the fibres of the 



cheek-muscle or buccinator. 

 The orbicularis palpebrarum possesses a widish area ; and intermingled with It Ijehind is 



the forward extension and jugo-orbital insertion of the protractor of the first movable 



zone. 

 The buccinator is weU developed, as also are the horseshoe-shaped fibres of the orhi- 



cularis oris. 

 As far as made out, the masseter is single, broad, and with a wide attachment to the 



mandibular angle. 

 The moderate-sized temporalis, besides a usual coronoid insertion, runs weU down 



and outside the ascending ramus, in a groove which extends, below the level of the teeth. 



There arc two strong fleshy pterygoidei. 



I shall compare the foregoing with the admirable description and illustrations of the 

 muscles of the nose, lips, and jaws of the Great Anteater {Myrmecophaga pibata\ given 

 by Prof. Owen. It becomes apparent ceteris paribus, that our loricate specimen, in its 

 fleshy facial development, presents a much greater likeness to the large hairy edentate 

 tbun the elongate tenuous snout-formation of the latter would warrant » Prom this we 

 may infer that the type is preserved, however much the contour of physiognomy is 

 altered. As another corollary we may admit that, though narrowed and lengthened, the 

 juisal rctractores are in verity homologues of the naso-labial levatores of Man. 



Owen specifies a levator nasi, the counterpart of my No. 1. His retractor anguli oris, 

 mtractor aloe nasi, and retractor labii superioris are comprised in Tolypeutes by the com- 

 pound muscle numbered 2 above. In it a tertiary and not binary tendinous distribution may 

 have been present, though not detected by me, the nerves, fascia, and tendons being 

 involved together in a tough matted structure. We agree as to a retractor labii inferioris, 

 thougli in the Anteater it possesses a more distinct superficial maxillary origin. Wat 

 is named accessorius ad orbicularem oris by Owen, is No. 3 in Tolypeutes, Differences 

 in the other muscles may be ascribed solely to the longer, shallower head of Myrme- 

 '^ophaffa juhaia. In Chlamy dophwus truncatus, Hyrtl mentions {I. c, p. 30) the presence 

 of levator anguli oris, zygomaticus, levator labii superioris or retractor rostri, besides the 

 usual jaw-muscles. 



4. Muscles of the Spine, the Neck, and the Bach, superficially. 

 H^l}^!!'"'^} T'^'' ^^^'' ^^ *^^ ^^^1^' a paucity of flesh compared with the 



gth of their tendons 



Trans. Zool. goc, 



