NO. 5 BARNARD: AMPHIPODA 35 



TABLE 1 



Some sedimentary characteristics of canyons and the coastal shelf. 



Canyons, 0-50 m Coastal shelf 



above axis 10-183 no 



55 samples 348 samples 



Median of all 



Median diameters, mm 0.039(0.059)* 0.059(0.130)* 



Median point of 



percent Carbon 1.05 (1.76)* 0.53* 



•From Emery 1960, p. 181, Table 12, carbon computed in reverse from organic 

 matter. 



TABLE 2 



Frequency of animal groups in depth classes of insular canyons, Coro- 

 nado, Tanner and Catalina, compiled from data of Hartman (1963). 

 Tabulated data represent individuals/m^. 



81 H 



n 



u 



hi 



*<i if 



Q CL, W S U O H 



•o o ? -o 



ea 



