566 BULLETIN 152, UNITED STATES NATIONAL MUSEUM 



Plate 19 

 Portunus (Portunus) acuminatus, male (40270), carapace 65 mm. wide 



Figure 1. Ventral view showing chelae. 



2. Dorsal view. 



3. Ventral view showing abdomen. 



Plate 20 



Figure 1. Portunus (Portunus) panamensis, female, Panama Bay, carapace about 

 25 mm. wide, dorsal view. 



2. Portunus (Portunus) asper, female (22025), carapace 75 mm. wide, 



ventral view showing left chela. 



3. Same, dorsal view. 



Plate 21 



Portunus (Portunus) asper, female cotype in Paris Museum 



Plate 22 



Figure 1. Portunus (Portunus) asper, male (61332), carapace 51.2 mm. wide, 

 ventral view showing chelae. 



2. Same, ventral view showing abdomen. 



3. Portunus (Portunus) panamensis, male (22023), 44 mm. wide, ventral 



view showing chelae. 



Plate 23 



Portunus (Portunus) panamensis, male (22023), carapace 44 mm. wide, dorsal 



view 



Plate 24 



Portunus (Portunus) panamensis, male (22023), carapace 44 mm. wide, ventral 



view showing abdomen 



Plate 25 



Portunus (Portunus) vocans 



Figure 1. Male (6930), carapace 23.5 mm. wide, ventral view showing chelae. 



2. Same, ventral view. 



3. Holotype, carapace 43 mm. wide (after A. Milne Edwards), dorsal 



surface. 



4. Same, ventral surface, showing stridulating ridge. 



5. Same, left half of front and orbit, dorsal surface. 



6. Same, right half of anterior part, ventral surface. 



Plate 26 



Portunus (Achelous) spinimanus, male (61277), carapace 85.6 mm. wide, dorsal 



view 



Plate 27 



Portunus (Achelous) spinimamis, male (61277), carapace 85.6 mm. wide, ventral 

 view showing outer surface of chelae 



