Geographic distribution of nematocarcinidae shrimps (Crustacea, Decapoda)

Nematocarcinidae shrimps that inhabit on the continental slope and in abyss include three monotypic genera (Lipkius, Nigmatullinus, Lenzicarcinus) and the genus Nematocarcinus (51 species) demonstrate the typical distribution of Indo-West Pacific group (74.5\% of the Nematocarcinus species dwell here) with the center of the species diversity in East Indies Triangle where 27.7\% of the species are found. Nematocarcinidae shrimps settle all oceans (with the exception of the Arctic Ocean) mainly in the tropics and subtropics. In the family, there are 2 tropic cosmopolites (Nigmatullinus acanthitelsonis and Nematocarcinus tenuipes), 2 Indo-West Pacific species (Nematocarcinus tenuirostris and N. parvus), and 2 species with the Panama-Caribbean area (N. faxoni, N. ensifer). Moreover, N. ensifer is an amphiatlantic species. The others 36 species (76.6\%) are endemic species of the provinces (including N. proximatus which may be considered as a species of the Kerguelen subregion of the Antarctic region) and 6 species (12.8\%) are endemic species of the regions.