CONTRIBUTIONS TO MARINE BIONOMICS. 407 



be accounted for, but their absence in Portumnus latipcs. The elucida- 

 tion of those features will be attempted in a subsequent article dealing 

 with the habits of the latter species. 



In conclusion I may add that a good figure of P. nasuius is given in 

 Costa's classical memoir on the fauna of the Bay of Naples (1853). 



BIBLIOGRAPHY. 

 Bell, T.— I.e. (1853). 



Cams, J. Victor. — Prodromus Fauwe Mediterranerti. Stuttgart, 1885. 



Costa, O. G. — Fauna del Regno di Napoli, 1836. Addizioni a' Decapodi Brachiuri, 



February, 1853, pp. 14, 15, Tav. 6, tig. 4. 

 Daua, J. D. — "Crustacea." U.S. Exploring Expedition, vol. xiii. 1852. 



Garstang, W. — 1. "The Habits and Respiratory Mechanism of Corystes cassi- 

 velaunus." Tliis Journal, iv. pp. 223-232. 18D6. 



„ 2. "On the Function of certain Diagnostic Characters of Decapod 



Crustacea." Rep. Brit. Ass. Liverpool, 1896, pp. 828-830. 

 Latreille, M.— 1. Nouv. Did. d'Hist. Nat. 1818. 



„ 2, Encycl. Methodique, x. 1825. 



Leach, W. E.— 1. Trans. Linn. Soc, xi. pp. 306-400. 1815. 



„ 2. Malac. Podoph. Brit. 1815, 



Milne-Edwards, H. — Hist. Nat. des Grustace's. 1834. 

 Risso, M. — Hist. Nat. des Grustace's des environs dc Nice. 1816 (Plate I., tig. 2). 



