197 



Fig. 133. — The anterior appendages of the left side of a crayfish. 



A External view of the antennule of the left side ; B, ventral view of the antenna of the right side ; 



C, mandible in ventral view ; C, the same in dorsal view, somewhat enlarged, showing molar process. ; 



D, maxillule (first maxilla) ; E, maxilla (second maxilla) ; F, first maxilliped ; G, second maxilliped; 

 H, third maxilliped. 



bp., Basipodite ; cp., coxopodite ; crp., carpopodite ; dtp., dactylopodite ; en., endopodite ; ep., epipodite; 

 ex., exopodite ; gill; isp., ischiopodite ; ntrp., meropodite ; o.g., opening of the green gland; pr., 

 protopodite ; prp., propodite ; sb., setobranch or tuft of coxopodite setae ; 1-5, joints of endopodite. 



