ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 22 



PLATE 1, FIG. 1 



Benthic photograph of San Pedro Basin, 9.7 mi SSW of Pt. Vicente, 

 California, br 197° T, 33-35-26, 118-28-10, 887 m, Mar. 29, 1952. 

 The surface of the sediments is quite irregular and strewn with the 

 tubes of Phyllochaetopterus, which are largely dead. The bottom 

 edge of the photo represents 6 feet in length. 



PLATE 1, FIG. 2 



Benthic photograph of Tanner Basin, 20.5 mi SW of S light, San 

 Nicolas Island, br 221° T, 32-57-26, 118-44-20, 1502 m, Nov. 4, 1950. 

 In the center of the picture is what is probably a vertebral bone and 

 on each side a crinoid, Florometra. The irregularities of the surface 

 of the sediment are due to burrowing animals. The bottom edge of 

 the photo represents 6 feet in length. 



PLATE 2, FIG. 1 



Benthic photograph of San Nicolas Basin, 33-04-29, 119-07-08, 1778 

 m, Nov. 18, 1951. The small pockets and ridges on the surface of the 

 sediments probably are due to the activities of the numerous sea- 

 urchins present. Sea-pens comprise the other evident fauna. The 

 lower edge of the photograph represents 6 feet in length. 



PLATE 2, FIG. 2 



Benthic photograph of San Nicolas Basin, 33-05-57, 119-04-14, 1738 

 m, Nov. 19, 1951. Two crinoids, Florometra, are seen; but few sea- 

 urchins and no sea-pens can be seen, in contrast to the upper picture. 

 The cloudy appearance may be due to stirring of the sediments h\ 

 the benthograph. The thread is a film defect. The bottom edge of the 

 photo represents a length of 6 feet. 



