NO. 9 



MUSCULATURE OF THE BLUE CRAB COCHRAN 



55 



ments occur distal to the " knee " joint, and therefore we know that 

 the dactylopodite is absent or fused. In the leg of the blue crali 

 (fig, 12 A, B), two movable segments occur between the l)asal joint 

 and the " knee " joint. One can easily see in this case that the 



Cxpd 



Fig. 20. — Appendages of Michthcimysis stcnolcpis. 



A, the second maxilHped. 



B, the third maxilliped. 



C, the fifth pereiopod. 



Bspd, basipodite; Crpd. carpopodite ; Cxpd, coxopodite ; Dcpd, dactylopodite; 

 Eppd, epipodite ; Expd, exopodite ; Iscpd, ischiopodite ; Mrpd, meropodite ; Prpd, 

 propoditc ; Prtpd, protopodite. 



basipodite is nearly ankylosed with the ischiopodite, the resulting 

 structure thereby becoming a basi-ischiopodite. In the leg of the 

 higher crustaceans the exopodite is absent. The basipodite plus the 

 endopodite is often referred to as the telopodite. 



