THE CANCROID CRABS OF AMERICA 565 



Plate 10 



Bathynectes superba, male (11366), width of carapace 55.2, ventral view showing 



abdomen 



Plate 11 



Coenophthalmus tridentatus, male, 39° 02'7S., 59° 27' W., carapace 17.6 mm. 



wide, dorsal^view 



Plate 12 



Coenophthalmus tridentatus, male, 39° 02' S., 59° 27' W. 



Figure 1. Ventral view showing abdomen. 

 2. Ventral view showing chelae. 



Plate 13 



Figure 1. Portunus (Portunus) ventralis, ovigerous female (53763), carapace 

 28 mm. wide, ventral view showing right chela. 



2. Same, dorsal view. 



3. Coenophthalmus tridentatus, male, near Montevideo, chela, outer face, 



enlarged. 



4. Same specimen, dorsal view. 



5. Same, antennal and buccal regions. 



Plate 14 

 Portunus (Portunus) sayi, male (8217), carapace 37 mm. wide 



Figure 1. Ventral view showing chelae. 



2. Dorsal view. 



3. Ventral view showing abdomen. 



Plate 15 

 Portunus (Portunus) anceps, male (24503), carapace 29.4 mm. wide 



Figure 1. Ventral view showing chelae. 



2. Dorsal view. 



3. Ventral view showing abdomen. 



Plate 16 



Portunus (Portunus) gibbesii, male (11217), carapace 70 mm. wide, dorsal view 



Plate 17 



Portunus (Portunus) gibbesii, male (11217), carapace 70 mm. wide 



Figure 1. Ventral view showing chelae. 



2. Ventral view showing abdomen. 



Plate 18 



Portunus (Portunus) xantusii, male (21782), carapace 56.7 mm. wide 



Figure 1. Ventral view showing outer surface of chela. 



2. Dorsal view. 



3. Ventral view. 



