34 



ALLAN HANCOCK PACIFIC EXPEDITIONS 



VOL. 27 



TANNER CANYON 



Six samples (Fig. 16) from 298 to 1298 meters were taken with 

 the large grab. Sample sizes varied from a low of 0.14 cuft to the 

 largest, 2.72 cuft from the deepest part of the canyon. Weight of 

 animals was highest, 32.1 grams, in the smallest sample, and low in 

 all others. The screenings of all samples contained considerable 

 amounts of biological debris, especially squid beaks, siliceous sponge, 

 radiolarian fragments, dead mollusk shells, especially those of pectens 

 and Turcicula, a large snail, also spines of echinoids and muddy 

 tubes of polychaetes. The smallest sample, from 496 m, contained 



118° 30' 



Fig. 14. Catalina canyon, with contour intervals in meters. Black 

 dots indicate sampling stations with depth in meters. Hyphenr 

 ated numbers indicate numbers of species and specimens. 



