NEPHROBS. 209 
will be on the basal joint of the anti-penultimate leg. 
In front of the legs are the che/a, or pincers, usually asym- 
metric, as one is modified for cutting and the other for 
crushing. They are evidently large legs and do not differ 
essentially from a typical leg. 
Fig, 132.—A CHELA or NepHrops (9th appendage). (4a mat. ) 
Fig. 133.-—A CHELATE LEG or NrePHROPS 
(roth or 11th appendage). (Ad nat.) 
Ae 
Dactylopodite. 
Propodite. 
Meropodite.' 
Coxopodite. 4 
Basipodite. 
Gill. 
Fig. 134. A Non-CHELATE LEG OF 
NEPHROPS (12th appendage). 
(Ad nat.) 
Epipodite. 
In front of the chele are three pairs of maxtllipedes 
or foot-jaws. The second maxillipede may be examined 
first. It has a leg-like five-jointed endopodite, a two-jointed 
protopodite and a long filamentous exopodite Finally 
there is a long epipodite, but no gill.* The third maxilli- 
pede is like it, but can be easily distinguished by the serrated 
* In Astacus there is a gill on this appendage. 
M. 15 
