GEOGRAPHICAL DISTRIBUTION. 
STATION LIST, 
Showing the Localities at which Brachyura were Collected during the 
Expedition, with the Names op the Species Obtained at each. 
As in my former Memoirs, four principal regions under which the higher Crustacea 
(or at least the littoral and shallow-water forms) may be distributed are distinguished. 
They are (l) the Arctic or Boreal Circumpolar Region (not represented by any species in 
the collection of H.M.S. Challenger) ; (2) the Atlantic Region ; (3) the Oriental or Indo- 
Pacific Region ; and (4) the Antarctic or Austral Circumpolar Region. In the present 
Report I have found it convenient to include in the latter region the species obtained 
south of 40° S. lat.; those obtained at the Cape of Good Hope and on the Agulhas Bank 
are included in the Atlantic Region, to which their affinities show they decidedly 
belong. The only Brachyurous Crab distributed throughout the Antarctic Region is 
Halicarcinus planatus, Fabricius. Of these regions, Nos. 1, 3 and 4 were established by 
Dana. 1 
The Atlantic Region includes not only the European Kingdom of Dana, but also in 
parts the Occidental Kingdom of that author, since it will embrace the Crustacean fauna 
of the West Indian Seas and of the eastern shores of the American Continent. Should 
this designation be generally adopted, it may be found convenient to restrict Dana’s 
Occidental Region to the west coast of America and Islands adjacent, for the Crustacean 
fauna of these coasts must be regarded as upon the whole distinct from that of the Indo- 
Pacific Region, although the researches of naturalists are always adding to the number 
of species common to that Region and the Indo-Pacific and Atlantic Regions. 
ATLANTIC REGION. 
Tenerife, 78 fathoms. 
Pisa ( Arctopsis ) tribulus (Linne). 
Neptunus ( Amphitrite ) hastatus (Linne). This species was perhaps obtained at 
the next-mentioned locality. 
1 See tlie Appendix to his Report on the Crustacea of the U.S. Exploring Expedition, p. 1554, 1S53. 
(ZOOL. CHALL. EXP. PART XLIX. 1886.) CcC C 
