MARLNIB GAMMARIDEAN AMPHIPODA 

 Table 1. — Geographic classification of gammaridean genera 



15 



Class or Zone 



Genera 



Species in 

 those Genera 



Cosmopolitan 



52 



898 



Antarctic-subantarctic 



56 



110 



Antiboreal 



38 



75 



South warm-temperate 



29 



48 



Tropical 



53 



111 



North warm-temperate 



35 



61 



Boreal 



89 



551 



Arctic-subarctic 



25 



71 



Bipolar ^ 



37 



488 



Biboreal only 



5 



64 



Biwarm-temperate 



3 



7 



Bathyal only 



62 



163 



Abyssal only 



38 



72 



Hadal only 



4 



4 



Total 



526 



2723 



First group amalgamation: 







Arctic-boreal 



114 



622 



Antarctic-antiboreal 



94 



185 



North warm- temperate ^ 



38 



68 



South warm- temperate ^ 



32 



55 



Cosmopolitan (including bipolar, biboreal, bi-WT) 



97 



1457 



Deep-sea 



104 



239 



Tropical 



53 



111 



Second group amalgamation (genera only) : 







Antarctic (including bipolar) 



93 





Arctic (including bipolar) 



62 





North warm- temperate (including cosmopolitan. 



90 





bi-WT) 







South warm-temperate (including cosmopolitan. 



84 





bi-WT) 







Boreal (including cosmopolitan, bipolar, biboreal) 



183 





Antiboreal (including cosmopolitan, bipolar. 



132 





biboreal) 







Tropical (including cosmopolitan) 



105 





' Including arctic-boreal and antarctic-antiboreal. 2 Including biwarm-temperate (bi-WT) . 



