﻿. j)j^ J. MURIE ON THE THREE-BANDED ARMADILLO. 



The subclavians pass over the broad first rib in a groore immediately in front of the 

 axiUary plexus of nerves. The brachial artery accompanies the median nerve through the 

 supracondyloid foramen, as Wenzel Gruber ' has akeady recorded in Dasi/pm tricinctm. 



At the intervertebral line marking junction of the last lumbar and first sacral vertebra, 

 the abdominal aorta sends off on either side an artery equivalent to the external ihac! 

 This passes to the inside of the process of the sacro-iliac synchondrosis, and, reachmg the 

 pelvic basin, proceeds to the middle of the groin, becoming the femoral. In its com^seit 

 lies upon the tiny tendons of the psoas parvus, afterwards obliquely crosses the psoas ihacus 

 and gracilis ere reaching the adductors &c. About a quarter of an inch below the 

 orin-m of the external iliacs, another pair of arteries, internal iliacs, spring from the stem 

 of the aorta abdominalis. Each of these dips behind the deep pelvic muscle, reenters the 

 pelvis at the sacrococcygeus : gluteal and other branches were not foUow^ed. 



As I did not dissect in detail the peripheral yascular subdivisions, I am unable to say 

 if Tolypeutes presents the retial peculiarities offered by the six-banded Armadillo, to 

 which attention has been directed by Profs. Allman^ Rapp^, and others ^ My rapid 

 examination, however, seems to point out that its arterial distribution is of the type 

 prevalent amongst other loricate edentates, not excepting the curious Chlamydo- 

 pkorni 



Brain,— As, regards the brain, I carefully extracted this and placed it in spirits ; but 

 unfortunately an accident befell the specimen ere I was prepared to figure and describe 

 it. This is to be regretted, as hitherto it has not been investigated. The deficiency has 

 to some extent been temporarily supplied by Professor Gervais ^ in a sketch of a cast of 

 the cerebral cavity of Toli/peutes tricincttis. He remarks, " L'Apar a les lobes olfactifs 

 encore plus gros, surtout plus larges et deja separes de la partie anterieure des hemi- 

 sphtjres par une sorte de collet ; ses hemispheres sont allonges, a plis egalement rares ; 



5 



son ccrvclct est plus large et moins long." 



Judging from Gervais's illustrations, it presents in contour closest agreement with 

 FHphradits (Dasi/pns) sexcinctus, somewhat less with E. villosus (=I>. vellerosus, Gray), 

 and still less with Priodontes gigas. The accuracy of Gervais's figure and his remarks 

 arc substantiated in my outline of the interior basis cranii, Plate 26, where, moreover, the 

 large maxillary and frontal sinuses have been opened up. 



Figures of the brain of Basijpus peba, given by Eapp ' and Alessandrini \ and of 

 Daeypm sexcinctus by Turner \ seem to confirm the above statement. 



The iV(?rFe8.— Eamifications of these were traced in a fugitive manner. There is a 

 relatively voluminous bundle of infra-orbital nerves, important in connexion with the 

 naso-bl)ial parts. Many of the twigs He between and underneath the upper and lower 

 icvatores muscles. The facial nerve is likewise large, and, emerging from the upper part 



; M^ dJAead. d Sci. d, St. Petersb. 1867, tom^ ' Txans. Brit Assoc. 1843, p. 68. » Oi>. .V. p. 92. 



PhvsioUtllr^ Gefusssystem dor Edentaten," Hyrtl, Denksch. Akad. d. Wiss. Wien, 1849. Mnne-Edwards, 

 literature NviU bo W ""'' ^' ^^^' ^^^^' ^'''^'' ^ discussion on retia generaUy, copious references to the 



• Hyrtl, mouog. on Chhmydophorm cited. 

 •' L» formes cercbrales des fidcntcs » "N-,M,„ 



' Of fit tab. viii fi« 3 . ; !""• ^''^'''' ^^ ^^'^^^' 1869, ton., v. p. 41, pL ii. fig. 8. 



• 8' • Memoir I c. tab. xvii. fig. 9. • Journ. of Anat. 1867, vol. i. p- 31- 



