6 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 27 



dation, grant G-9060. The biological samples were taken by the 

 Foundation Research ship, VELERO IV, and members of the Founda- 

 tion participated in the cruises. Much of the planning and performance 

 of the field work was done under the supervision of Professor K. O. 

 Emery and Dr. Jobst Hiilsemann. The sampling sites were carefully 

 positioned with respect to canyon walls and axes. Mr. Robert R. Given, 

 of the Biology Department, washed many of the samples in the 

 laboratory, and made estimates of macroscopic weights. Further break- 

 down and sorting in the laboratory were done by Mrs. Sonja Mulvane, 

 laboratory assistant. 



Species were identified as follows: Echinoderms by Mr. Fred 

 Ziesenhenne, who also operated the VELERO IV on the cruises, 

 cumaceans by Mr. Robert Given, some amphipods by Dr. J. Laurens 

 Barnard, now at the Beaudette Foundation at Santa Ynez, California. 

 Some mollusks were named by Dr. Myra Keen of Stanford University, 

 others by Mr. Don Wilson, formerly a student in the biology depart- 

 ment. To all of these participants as well as others who aided in 

 various ways, I am indebted for much help and support. Mr. Anker 

 Petersen prepared the plates and all illustrative material. 



METHODS 



Two hundred eighty-two bottom samples were taken from the 

 canyons of southern California, using a large Campbell grab (referred 

 to as CG) which takes up to 130-150 liters of bottom sediment and 

 covers an area of up to half a square meter, and a smaller orange- 

 peel-grab (called OPG) which takes about half as much sediment and 

 covers an area about half as large. The methods of sampling have 

 been described in previous reports on quantitative results (see Litera- 

 ture Cited). The processing and weighing of macroscopic animals was 

 done in the laboratory, by sorting from the debris or screenings all of 

 the visible animals to major group. This has been estimated to 

 comprise 85 to 90% of the entire animal weight of a sample. In most 

 cases the tubes of animals were not weighed, but shells of mollusks 

 and thick calcareous tests of echinoderms, which could not be removed 

 without damaging the specimens, were included in total wet weights. 



SUMMARIES OF THE FAUNA IN THE SUBMARINE 



CANYONS 

 The canyons, from northernmost to southernmost along shore, 

 are Hueneme, Mugu, Dume, Santa Monica and Redondo canyons, all 



