6S0 EXPLANATION OF THE PLATES. 



Plate XLIX. 



Fig. A. Philyra rectangvlaris, $ , X 5. a, outer maxillipede. 



B. Psendopliihjra polita, rf , X 3|. b, postabdomen, X 3| ; b', 



outer maxillipede. 



C. Cymopolia wJiitei, adult $ , x 3. c, postabdomen, x 4. 



Plate L. 



Pig. A. Dromidia apongiosa , var. stimpsonii, adult $ , X i!. «, outer 

 view of cbelipcde, x 2|. 



P>. Homdlodromia coppingeri, adult $ , X 4. ft, inferior view 

 of tbe frontal, antennal, and part of tbe buccal region, 

 showing tbe form of the epistoma, the nearly smooth en- 

 dostome, &c. ; b', part of the sternal surface, showing the 

 sternal tubercles ; b", outer view of chelipede. x 7. 



Plate LI. 



Pig. A. Munida edivardsi, adult c? , X 4. a, dactylus of an am- 

 bulatory leg. 



B. Frontal and antennal region of Pontonia brevirostris, <f , 

 dorsal view, showing the form of the small rostrum, the 

 peduncular joints of the antennules, &c. b, terminal 

 segment and uropoda ; V , outer maxillipede ; b", cheli- 

 pede of the first pair ; b'", chelipede of the second pair ; 

 b"", ambulatory leg (next after chelipedes), showing the 

 form of the dactylus. 



Plate LII. 



Fig. A. Penccus ricJitersi, c? , x 3. a, dorsal view of the frontal 

 and antennal region, showing the form of the eye-peduncles 

 and antennules and antennal scales ; a', terminal seg- 

 ment and uropoda. 



B. Gonodacti/lus elegans, $ , x 3. b, lateral view of the 

 raptorial limb (second maxillipede), X 3|. 



