INTERMEDIATE OE CONTINENTAL ZONE. 



241 



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metrical belt. Lifhodes, a shcallow-water form in the cold seas of both the 

 Northern and Southern Hemisphere, is found in the tropics only at consider- 

 able depths. Munida, too, is a type of world-wide distribution in compara- 

 tively shallow waters of the North and South Temperate regions. But it 

 reaches its maximum development in moderately deep water (100-300 



fjithoms) within the tropics, and one 



(Ml 



found in tlie West Indian region at so great a depth as 1105 fathoms.* 

 XantliodcSy Ehalia^ Solcnoccra, and Sieyonia, are littoral or sublittoral genera 

 of cosmopolitan range in the warmer seas of the globe. Cymopolia is also a 

 genus of extended geographical range, with a vertical distribution from the 

 shore to 298 fathoms. Catapagiirits has been hitherto known from the east 

 coast of North America, 50-300 fathoms, and from the Arafura Sea and the 

 Feojee Islands, 28 fathoms; the "Albatross" species has most affinity with 

 that from the Arafura Sea. yL'tlmsa and FasijjJiacia are coi^mopolitan genera 

 with a bathymetrical range extending from the littoral belt and the surface 

 to 1000 fatlioms. Ana7nathia, Uroptyclms^ Iconaxius^ and Aristcms have their 

 fullest development in the intermediate zone between 150 and 500 fathoms. 

 They are all genera of world-wide range, unless it be leonaxiiis^ which has 

 hitherto been found only on the east and west sides of the Pacific. The 

 following genera represented in the material collected by the "Albatross" at 

 a depth less than 500 fathoms niay be considered as deep-water types which 

 overlap the limit of the intermediate belt: Munidopsis, Poly elides, Oly~ 



Nematocarc 



Gnat] iojjhausia. 



H^ 



The following list indicates the genera found below the 500 fathom line; 



those whose range extended beyond 1000 fathoms are printed in italics: 



Trachycarciims. 



jEihiisuia, 



Lcptolitiiodcs. 



Lithodes 



Parapagtirics. 



Galacantha* 



M'unido'psls. 



Axius (Iconaxius) 



Galas taciis. 



I^Tcpliropsis, 



Willenwesia. 



Polt/cheles, 



Eryoniciis, 



Sclerocraiigon. 



Pontophilus, 

 Paracrangon, 



Glf/2)hoGranfj<)n. 

 Ileterocarjjus, 

 Pandalopsis. 

 Ne m a toe arct7i us . 



j4cantheph]/ra. 

 IlyDicrwdora, 

 JVotostomus. 

 Pasiphaeia ? 



Peiieus (1 species). 



Peneopsis, 

 JIaliporus. 

 Ilemipeneits. 

 Benthesicf/mus, 



Gennadas, 



Sergcstes ? 

 Gvathophmisia, 



Eiwopia. 

 Petalophtlialmus. 



Scolophthalmus, 



Ceratomysis. 



^ As a result, cluefly, of the dredging expeditious of the last twenty years, the number of knowu species 

 of Miinida has beeu raised from six to about forty-five. 



31 



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