EXPLANATION OF THE PLATES. 679 



ECHINODERMS. 



Plate XLV. 

 Fig. a. Neoplax oplnodes, X 2. 



b. Arm-joints of ditto, seen from above, x 4. 



c. The same, from the side, x 4. 



d. The same, from below, x 4. 



e. Lower surface of disk, x 4. 



CRUSTACEA. 

 Plate XLVI. 

 Fig. A. AcJicens Icevioadis, c? , x 5. a, chelipede, x 5. 



B. Stilbognathus martensi, adult d , x 2. b, buccal and anten- 

 nal regions, showing the form of the joints of the outer 

 maxillipede &c, x3; b', chelipede, x2|. 



Plate XLVII. 

 Fig. A. Eurynome stimpsonii, tf , x 4. a, chelipede, x 6. 



B. Entomonyx spinosus, X 3|. b, inferior view of antennal 

 region, showing the form of the basal antennal joint, 

 X 4| ; 6', postabdomen, x 4 ; b", chelipede, x 4. 



Plate XLVIII. 



Fig. A. Frontal region of Xiphonectes vigilans, var. obtusidentatus, 

 showing the form of the marginal teeth, x 5. 



B. Thalamita quadrilobata, adult S • &> chelipede. 



C. Carcinoplax Integra, $ , X 5. c, inferior view of frontal 



and antennal region, showing the form of the peduncular 

 joints of the antennae and the merus of the maxillipedes ; 

 c', chelipede, x 7. 



