Bui.1. U. S. B. F., 1909. 



Plate XLL 



jm 



Fig. .. 



Fig. I. — Left second pereiopod from anterior or upper side, partly dissected to show the relations of muscles and tendons in the 

 principal segments; hinges (A) and nerves (re^ and v?-) are indicated; and extensor and flexor m.uscles {ex, ft.) are numbered 

 to correspond to segments of origin. 



Fig. 2. — SheU of right toothed forceps in sectional view from above, to show tendons crossing distal joints, s h, lower sliding 

 hinge, from inside; mb, interarticular membrane (dotted line marking position of former tendon pocket). 



