GEOGRAPHICAL DISTRIBUTION OF CRUSTACEA. ^553 



Cycloes granulosa ; Canaries ; Japan (probably same species). 



Kemipes scutellata; Ascension Island; Swan River, Australia; St. Christopher's. 



Lysmata seticaudata ; Mediterranean; Japan. 



Alpheus Edwardsii ; Mediterranean ; Cape Verdes ; Port Natal, South Africa. 



Pandalus pristis ; Mediterranean ; Japan. 



Squilla mantis ; Mediterranean; Canaries; Tgchutan. 



Pagurus striatus; Mediterranean; Japan. 



3. COSMOPOLITES. 



The above lists include the following species occurring in the Occi- 

 dental, Africo-European, and Oriental seas. 



Grapsus pictus. 

 Acanthopus planissimus. 

 Plagusia squamosa. 

 Plagusia tomentosa. 



Bernhardus streblonyx. 

 Crangon boreas. 

 Crangon vulgaris. 

 Gonodactylus chiragrus. 



These are cosmopolite species.* The Grapsus, AcantJiopus, Plagusia 

 squamosa, and Gonodactylus pre-eminently deserve this name, being 

 found both north and south of the equator. They thrive in the 

 hottest equatorial waters, and have their extreme limit in the tempe- 

 rate region. The temperature they admit of is hence at least from 56 

 to 88 F. 



The other species are cold-water species. Plagusia tomentosa 

 belongs to the southern subtemperate region, being reported from 

 Cape Town, New Zealand, and Chili, and the rest are found in high 

 northern latitudes, and probably pass from the Atlantic to the Pacific 

 Ocean through the Arctic Seas. 



Besides the above species, a few are found in the West Indies, 

 which occur also in the Oriental Seas, but are not yet known from the 

 European or West African coasts. These, which also may be styled 

 cosmopolites, are as follows : 



Mithrax asper ; East Indies ; probably the same on the Peruvian coasts. 

 Atergatis lobatus ; Red Sea and Indian Ocean ; West Indies. 



Carpilius inaculatus ; East Indies ; South France ; Japan ; various Pacific Islands from 

 the Paumotus to the Feejees and Hawaiian Islands; West Indies 

 Eriphia gonagra ; East Indies ; Port Natal ; Key West. 



* The Platyonychus bipustulatus may possibly be another cosmopolite, for it ia re- 

 ported from Table Bay, the East Indies, Japan, and Valparaiso. But we believe the 

 Valparaiso species to be different from that of the East Indies, and have so named ij. 



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