PLATE XLVI. 



Fig. 1. Rissoa (Cingula) alvearium, n. sp. 



a. The natural size. | &. The shell, enlarged. 



Fig. 2. Rissoa (Setia) triangularis, n. sp. 



a. The natural size. | b. The shell, enlarged. 



Fig. 3. Rissoa (Scrobs) badia, n. sp. 

 a. The natural size. 



Fig. 4. Rissoa (Scrobs) scrobiculator, n. sp. 



a. The natural size. 



b. The shell, enlarged. 



Fig. 5. Iphitus tuberculatus, n. sp. 



a. The natural size. 



b. The shell, enlarged. 



w ig. 6. Rissoina ephamilla, u. sp. 



a. The natural size. 

 6. The shell, enlarged. 



Fig. 7. Rissoina triangularis, n. sp. 



a. The natural size. 



b. The shell, enlarged. 



Fig. 8. Rissoina mercurialis, u. sp. 



a. The natural size. 



b. The shell, enlarged. 



Fig. 9. Rissoina honoluluensis, 11. sp. 



a. The natural size. 



b. The shell, enlarged. 



Fig. 10. Rissoina transenna, u. sp. 



a. The natural size. 



Fig. 11. Scaliola arenosa, A. Ad. 

 a. The natural size. 



6. The shell, enlarged. 



c. The apex, magnified. 



c. The apex, magnified. 



c. The apex, magnified. 



c. The apex, magnified. 



c?. The sculpture, magnified. 



c. The sculpture, magnified. 



d. The apex, magnified. 



c. The apex, magnified. ' 



d. The sculpture, magnified. 



b. The shell, enlarged. 



i. The shell, enlarged. 



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