no The Alligator and Its Allies 



radiale and with a thin tendon to the metacarpal 

 bone of the thumb. Riidinger was not able to 

 find this muscle in Alligator cynoceplialns. 



Carpo-phalangei (Plate II., Fig. i, 4) (Flexor 

 digitorum communis brevis, Oberflachlicher ge- 

 meinschaftlicher Fingerbeuger, Flechisseur sub- 

 lime, Flexores sublimis a profundo perforati, Lange 

 Flexoren der Finger, Flexor digitorum communis 

 sublimis s. brevis, Flexor digitorum sublimis). 

 A small thick muscle. It springs from the liga- 

 mentum carpi- volare proprium and from the ulnar 

 border of the distal end of the os carpi- radiale and 

 is divided into eight muscle-bellies which pass 

 over to the proximal ends of the first phalanges as 

 thin tendons that are penetrated by those of the 

 humero-ulno-phalangei muscle. 



Hiimero-ulno-phalangei (Plate II., Figs. I and 

 2, 5) (Flexor digitorum communis profundus, 

 Flechisseur profond, Tiefer gemeinschaftlicher 

 Fingerbeuger, Flexor digitorum profundus, Flexor 

 profundus). Arises with three heads. The first 

 head takes its origin from the internal condyle of 

 the humerus, runs between the humero-radialis 

 lateralis muscles, and passes as a tendon over 

 to the carpus where it unites with the other two 

 heads of this muscle. The second, deep head 

 comes from almost the entire length of the ulna. 

 These two heads may be called the long heads. 

 The third, short head springs from the proximal 

 ends of the two large carpal bones of the first row, 



