556 MR. J. C. GALTON ON DASYPUS SEXCINCTUS. 



the whole extent of the posterior ridge or spine of the tibia, from the neck of the bon 

 as far as a point about half an inch above the free lower extremity of its malleolus 



For the extent of the upper half-inch of its insertion, it is overlapped by the lower 

 half of the terminal portion of the semimembranosus, which muscle is, in turn itself 

 overlapped by the strong internal lateral ligament. 



The popliteus bears a striking resemblance in shape to its supposed serial homologue 

 in the upper limb, namely, the pronator teres. 



Plantar is. —This muscle arises partly fleshy, partly tendinous, in company and almost 

 fused with the outer head of the gastrocnemius, and immediately internal to it (the above- 

 mentioned portion of the latter muscle completely covering it on its external side), from 

 a roughish projection from the inferior or posterior aspect of the shaft of the femur, just 

 superior to the inner condyle. The muscle gradually swells out from this origin to 

 attain its greatest breadth at about the termination of the upper third of the calf; after 

 which point it gradually tapers towards a strong tendon, which passes into the sole 

 through a vertical groove in the calcaneal process of the heel-bone, which is arched over 

 by the broad tendon of insertion of the gastrocnemius. 



The tendon of the plantaris, besides contributing to the plantar fascia, splits, at about 



he level of the tarsometatarsal joint, into three divisions, which pass respectively to the 



UaUux second and third digits, and are inserted into the metacarpal extremities of their 



tcXTof TT P ^ ^"^ a m ° de ° f Animation similar to that of the 



JissaT of t W^T "Ir^ 1U ^ UPPer Hmb > * that to* form a tunnel for the 

 passage of the tendons of the deep flexor. 



cJt °lt fust' £ I"' v "T " V6ry d6liCate ' Md ^ haTO **** — -'-ked by 



^u\ier, since it is omitted in his plate 1 . 



tendT bete tT "^ ?" ^ ^ ^^ fr0m itS P lantar surface ) of the 

 .^T' ^ 6 S dmS . ,0n ' a branch is S^en off to the fourth dikt. which hns L inser- 



similar to that of the tendons whieh pass to the other toes. 



Ihe above-described contributions of thp -n/^/ • i , , 



interesting seeir^ +w +1 ■ plmtans muscle to the digits of the foot are 



sublimit into one muscle. ™ Klmt ? *! «» ^ion of the palmaris longus and flexor 



Mr. Mivart and Br. Murie in th^r. « 

 insert a quotation from one of Prof hX's^ I ^T" °' ^^^ trtM> ' 

 which refers to the plaHtaru, in «J rS * ™ ^^ {MaWh 2 ° th ' 1865) ' 

 a tendon which spreads on the 11 ri PaSSage concludes thus ■—" I* ends in 



perforated tendons, thus replacing ,Tfl *? ^ **" Calcaneum ' ™* divides into four 



The editor of th second eto on r > T*' " * ^'^ •""*•*••" 

 in some Rodents, SZ^SlZ Jr"J ' ^^ ' remarks ' ^ * «* Camivora, 

 with that of the planlrZ *" """' **" exists > but ** tendons are fused 



The following remark oonn^c ;« ^ 



H-M.) „ Zurn. —ifeta J,'' "™ ™' k <''■ >*» — H-» ■» ■%«. (» 



Nous 



1 Anat. Comp. pi. 260. 



Jun 



ur perfore 



i 





a 



Vol, i. p. 557. 



