EXPLANATION OF THE PLATES. 0G5 



Fig. B. Petrolisthes annulipes, adult $ , x 2. b, antennal peduncle, 

 showing the spine on the antepenultimate joint. 



C. Dorsal view of frontal and antennal region of Petrolisthes 



corallicola, var. dorsalis, x 6. e, chelipede, x 3. 



D. Pohjonyx obesulus, adult $ , X 3. d, frontal and antennal 



region, x 5 ; d', outer view of chelipede, x 3. 



Plate XXX. 



Fig. A. Pachycheles pulchelhs, adult S , X 4. a, anterior view 

 of the frontal region ; «', antennal peduncle ; a", dactylus 

 of the third ambulatory leg. 



B. Porcellana nitkla, var. rotundifrons, adult 3 , X 2. b, outer 



view of chelipede, x 2. 



C. Porcellana dispar, adult $ , x 3. 



D. Porcellana quadrilobata, $ , x 4. d, outer view of cheli- 



pede, x4. 



Plate XXXI. 

 Fig. A. Oalathea anstraliensis, adult J , x 4. 

 B. Munida spinulifera, $ , x 4. 



Plate XXXII. 



Fig. A. Gebiojpsis darivinii, adult, x 5. a, frontal region ; «', ter- 

 minal segment and uropoda. 



B. Harjnlius inermis, adult $ , x 4. 6, terminal segment and 



uropoda ; b', dactyl of the third leg. 



C. Lateral view of rostrum of Coralliocaris ? tridentata. c, dac- 



tyl of the third leg. 



D. Penceus batei, adult $ , x 1|. d, terminal segment and 



uropoda. 



Plate XXXIII. 



Fig. A. Cirolana schibdtei, adult cJ, x2. a, lateral view of the 

 body, showing the epimera, x 2 ; a', form of the interan- 

 tennal plate. 



