GEOGRAPHICAL DISTRIBUTION OF CRUSTACEA. 1567 



Calappa gramdata, Dorippe lanata, Homola spinifrons, Albuncea sym- 

 nista, Scyllarus lotus, Arctus ursus, Gnathophyllum elegans, Palcemon 

 Treillianus, Pagurus callidus. The cosmopolites, Plogusia squamosa 

 and Acanthopus ■pla?iissimus are also found at the Canaries. The Lep- 

 topodia sagittaria occurs here, at the West Indies, and at Valparaiso. 



2. The Mediterranean Province. The Azores and Madeira belong 

 to this province. The characteristic species, distinguishing it from 

 the more northern provinces are, Lissa chiragra, Doclea ovis, Acarir 

 ilionyx lunulatus, Panopcem Herbstii (also, N. American), Platyonychus 

 nasutus, Goniograpsus maurus, Heterogropsus Q-dentatus, Brachynotus 

 Q-dentatus, Ilia nucha and I. rugulosa, Latreillia elegans; and at Madeira, 

 Acanthopus planissimus and Qrapsus pictus are very common species. 

 Above we have mentioned some of the species that are found at the 

 Canaries also; and beyond we give a list of those found in the seas of 

 Britain. 



The relations of the Mediterranean region to Japan are mentioned 

 by De Haan. The genera strikingly Mediterranean which occur in 

 Japan, are Latreillia, Niha, Caridina, Ephyra, Sicyonia, Achceus, Pan- 

 dolus, Lysmata; and the species of the last three, together with Squilla 

 mantis, are probably identical, viz., Pandalus pristis, Lysmata seti- 

 caudata, and the Achceus Cranchii, which last is at least hardly distin- 

 guishable, according to De Haan, from the A. japonicus. Portunus 

 corrugatus is also closely like a Japan species, according to De Haan. 

 The Oycloes of the Canaries is another of the Atlantic species, allying 

 the Atlantic region to Japan, as above mentioned. Doclea is also an 

 Oriental genus, represented in the Occidental kingdom by Libinia. It 

 has but one described species out of the Oriental kingdom. 



3. The LusitAnian Province (temperate), along the western coast 

 of Portugal. Length, three hundred miles. 



4. The Celtic Province (cold temperate) so named by Milne Ed- 

 wards, including the Atlantic coast of Spain and France, the British 

 Channel, and Southern Britain and Ireland. The more characteristic 

 genera are Inachus, Eyas, Pisa, Eurynome, Perimela, Cancer (C. 

 pagurus), Portumnus, Ibrtunus, Polybius, Ebalia, Atelecyclus, Bern- 

 hardus, Galatlwa, Mimida, Axius, Galocaris, Eomarus, Crangon, Nika, 

 Eyppolyte, Pandalus. Several of the species of the Celtic province, 

 which reach to the Canaries, and occur also in the Mediterranean, 

 are mentioned above. The following is a list of the Decapods common 

 to the Celtic province and the Mediterranean : — 



