Plate 10. 



1-6. Podophora pedifera Agass. 



1. Odd posterior interambulacrum, and left posterior with part of right posterior ambula- 



crum, showing the grouping of the spines of a specimen measuring 75 mm. in diam- 

 eter, including the spines. 



2. The same portion of the test as in 1 of a specimen, 76 mm. in diameter. 



3. The same portion of the test as in 1 of a specimen 77 mm. in diameter. 



4. The same portion of the test as in 1 of a specimen 80 mm. in diameter. 

 6. The same portion of the test as in 1 of a specimen 82 mm. in diameter. 

 6. The same portion of the test as in 1 of a specimen 87 mm. in diameter. 



The dotted lines unite the primary radioles belonging to the same vertical row. 

 Outer reef, Fakarava, Paumotus, " Albatross " Ex., 1899-1900. 



