ANATOMY OF CACOPUS SYSTOMA. 



541 



nised with certainty by its connection with the muscle adductor 

 longus digiti i (Ecker, p. 109 ; & text-fig. 11 A). 



On the plantar surface of the foot in several forms of the Anura, 



Text-figure 1 1 (A, B, and C). 



A. The bones of a pes of Caco^ms systoma. P.H., prehallus ; O.N., os navicuLiie ; 

 A., astragalus ; C, calcaneum ; O.C., os cuboideum. 



B. A side view of a pes of Cacopiis, showing the relation of the muscle abductor 

 AaWwc/s A. to the prehallux P.H. V., plantar is ; Y.Y)., flexor digitoriim; III, 

 IV, and V, longus ; S., skin cut and deflected upward. 



C. The skin (Sk.) on the plantar surface of the same, cut and deflected sidewa.ys 

 in order to expose the muscles connected with the tubercles in question. G. 

 gastrocnemius, showing its relation to the " os sesamoide " {o.s) or the outer 

 metatarsal tubercle ; P., plantaris inserted by means of a fascia on to the 

 prehallux (P.H.) or the inner metatarsal tubercle. 



particularly in those with a fossorial habit, has been observed a 

 certain prominent tubercle of a horny consistency. It would 



