NO. 3556 PORTUNID CRABS—STEPHENSON AND REES ol 
Materiau:—Kast Africa: Ras Banas, Red Sea, 1950, Sozon 
Vatikiotis, 1 male, 3 females.* 
Malay Peninsula: S.1166, Singapore, “China,” Arthur de Sowerby, 
1 male. 
| 
Figure 16.—Portunus trituberculatus (Miers), male: a, pleopod, Malay Peninsula, Singa- 
pore, de Sowerby; b, pleopod tip, upper surface, same specimen; c, abdomen, E. Africa, 
Ras Banas, Vatikiotis. (Scale=a, 10 mm.; b, 1 mm.; c,5 mm. Identity of specimen 
now doubtful.) 
a 
Ficure 17.—Fronts. Portunus trituberculatus (Miers): a, East Africa, Ras Banas, Vati- 
kiotis, 56 mm. female (identity of specimen now doubtful). P. pelagicus (Linnaeus): 
b, Philippines, Sta. 5346, Alb., 66 mm. female. (Scale=5 mm.) 
3 Doubts have arisen concerning the identity of these specimens, which may be 
reported on in a later publication. 
