THE CANCROID CRABS OF AMERICA 571 



Plate 67 

 Ewphylax robustus, Mazatlan, male, carapace, 94 mm. wide 



Figure 1 . Fronto-orbital region, anterior view. 



2. Antennal and buccal regions. 



3. Chela, outer side. 



4. Abdomen. 



Plate 68 



Erimacrus isenbeckii, male (15345), carapace 73 mm. wide, ventral view for 



abdomen 



Plate 69 



After Dana 



Figure 1. Peltarion spimdosum, S. Patagonia, carapace 43 mm. long, dorsal 

 view. 



2. Same, abdomen of male. 



3. Peltarion dexlrum, male holotype, carapace 42.4 mm. long, ventral 



view. 



Plate 70 



Trachijcarcinus spinulifer, male holotype, carapace 33.8 mm. wide, dorsal view 



Plate 71 



Trachycarcinus spinulifer, male holotype, carapace 33.8 mm. wide, ventral view 



Plate 72 



Trachycarcinus corallinus. After Faxon 



Figure 1. Male denuded, station 3356, enlarged. 



2. Abdomen of male, enlarged. 



3. Minor cheliped of male, enlarged. 



4. Male, station 3418, Albatross, enlarged. 



5. Abdomen of ovigerous female, station 3356, enlarged. 



6. Oral and antennal region, enlarged. 



7. Sternal region of male, enlarged. 



Plate 73 



Tricho peltarion nobile, off Santa Lucia, 151 fathoms, male, carapace 65 mm. 

 wide without spines. After A. Milne Edwards 



Figure 1. Dorsal view. The hairs have been removed from the right half of 

 carapace and feet. 



2. Antennal and buccal regions. 



3. Right chela. 



4. Left chela. 



5. Abdomen. 



Plate 74 



Pliosoma parvifrons, Cape San Lucas 



Figure 1. Male, carapace 20 mm. long, dorsal view. 



2. Ventral view. 



3. Male holotype, carapace 15.5 mm. long, dorsal view. After Stimpson. 



