SPONGES OF THE PACIFIC, I. GEODIDAE. 



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/7^. 1 — 17 Sidonops bicotor n. sp. 

 1, 3, 6, n from station 4551; 3, 5, 7—10, 13 from station 3781: 4 from station 3168 ; 11, 13, 14 from station 2938 ; 15, 16 from station 4430. 



Lendenfeld photographed. 



