48 (47) Front with 4 separate teeth between inner orbitals; fissures on orbital margin 



closed except for shallow notch; color varied but never as above Portunus A 



A (48) Carapace nearly devoid of ridges and without noticeable short thick covering 



of hairs P- sayi 



Figure 87. — Portunus sayi, carapace and eyes. 



A (48) Carapace with ridges fairly prominent and with noticeable covering of short 



thick hairs B 



B (A ) Lateral spine relatively short, not more than about twice length of preceding 



tooth; a number of meandering ridges on carapace P. spinimanus 



Figure 88. — Portunus spinimanus, carapace and eyes. 



B (A) Lateral spine long, obviously more than twice length of preceding tooth; 

 a single ridge (often darkened) leading to lateral spine on each side of 

 carapace P. gibbesii 



Figure 89. — Portunus gibbesii, carapace and eyes. 



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