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ALLAN HANCOCK PACIFIC EXPEDITIONS 



VOL. 27 



2. Dunie canyon, Sta. 7520, in 638 meters, axis, mud. The photo- 

 graph (Fig. 21) shows a seastar, perhaps Mediaster sp., in the upper 

 left hand corner, not taken in the sample. Brissopsids are shown by 

 hooBike depressions, and numbered 12 in the sample recovered. The 

 Analyses show the recovery of 22 species and 236 specimens, of which 

 the largest were 6 brissopsids, 4 Solcmya measuring up to 38 x 12 mm, 

 and a ghost shrimp. The most numerous were Cornpsomyax sp. with 

 173 juvenile individuals and Mitrella pennodesta with 8. 



Fig. 21. Dume canyon, Station 7520, in 638 meters. The cloud of silt 

 was stirred up by the triggering mechanism. The upper 

 right hand corner shows a seastar, possibly Mediaster. The 

 hooflike depressions are made by brissopsid echinoids. The 

 smaller holes and mounds are those of moUusks, polychaetes 

 and other animals. 



