Land, Fresh- Water, and Marine Crustacea. 109 



5. Portunus holsatus, Fabricius. 



1798. Portunus holsatus, Fabr., Ent. Syst., Suppl., p. 336. 

 Habitat — Firth of Forth (Dr Leach, as P. lividus). Com- 

 monly met with on the oyster-banks (Henderson). 1 Firth 

 of Forth (White, 1857). One of the more common of the 

 Forth Brachyurae, but is not mentioned in Wood's List. 



6. Portunus marmoreus, Leach. 



1814. Portunus marmoreus, Leach, Malacol. Brit., pi. viii. 



Habitat. — At Portobello and Musselburgh, found occasion- 

 ally on the beach (Howden ; L. & H.). Obtained amongst 

 trawl refuse west of May Island (Mihi). 



7. Portunus pusillus, Leach. 



1814. Portunus pusillus, Leach, op. cit., pi. ix. figs. 5-8. 

 Habitat. — Off Prestonpans (Howden). Firth of Forth, 

 common (Norman ; cf. White, Brit. Crust., 1857, p. 52). 

 Leslie and Herdman say they have frequently dredged this 

 species near Inchkeith {Invert. Fauna, p. 51). I have 

 occasionally observed P. pusillus amongst the trawl refuse 

 when at work in Largo Bay. 



Genus (4) Portumnus, Leach, 1814. 



8. Portumnus latipes (Pennant). 



1777. Cancer latipes, Pennant, Brit. Zool., vol. iv. p. 5, pi. i. fig. 4. 

 1853. Portumnus variegatus, Bell, op. cit., p. 85. 



Habitat. — At Prestonpans and Port Seton (Howden). 

 Shores of the Firth of Forth (White, Brit. Crust, p. 43). 

 Portobello (Leslie and Herdman). Sandy shore near Gullane 

 (Andrew Scott). Aberlady, 1890 (W. Evans). 



Family Corystidj:. 

 Genus (5) Corystes, Latreille, 1802. 



9. Corystes Cassivelaunus (Pennant). 



1777. Cancer Cassivelaunus, Pennant, Brit. Zool., vol. iv. p. 6, pi. vii. 

 Habitat— Oft Inchkeith (M'Bain). Newhaven (C. W. 



1 "Decapod and Schizopod Crustacea of the Clyde," Trans. Nat. Hist. Soc. 

 Glasgow (1886), p. 10. 



