CX p 



Fig. 37. — Astacus fluviatilis.— Appendages of the left side of the abdo- 

 men ( x 3). A, the posterior face of the first appendage of the male j 

 B, the same of the female ; C, posterior, and C, anterior faces of the 

 second appendage of the male ; D, the third appendage of the male ; 

 E, the same of the female ; F, the sixth appendage, a, the rolled 

 plate of the endopodite ; b, the jointed extremity of the same ; bp., 

 basipodite ; ex. p., coxopodite ; en.p., endopodite ; cx.p., exopodite. 



