PLATE XXVI. 



Fig. 1. Plcurotoma xanthopha'es, n. sp. . 



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



Fig. 2. Pleurotoma phymatias, n. sp. 



a. The natural size. 



b. The shell, enlarged. 



c. The sculpture, magnified 5 diameters. 



Fig. 3. Pleurotoma (Surcula) dissimilis, n. sp. .... 

 Fig. 4. Plcurotoma (Drillia) horrenda, n. sp. 



Fig. 5. Pleurotoma {Drillia) kymatoessa, n. sp." . 



a. The natural size. c. The apex, magnified 25 diameters. 



b. The shell, enlarged. 



Fig. 6. Pleurotoma (Drillia) spadix, n. sp. 



a. The natural size. 

 6. The shell, enlarged. 



c. The apex, magnified 30 diameters. 



Fig. 7. Pleurotoma (Bela) climaMs, n. sp. 



Fig. 8. Pleurotoma (Spirotropis) agnactica, u. sp. 



a, b. The shell, natural size. 



Fig. 9. Pleurotoma (Thesbia) membranacea, n. sp. 



a. The natural size. c. The sculpture, magnified 15 diameters. 



/>. The shell, enlarged. 



Fig. 10. Pleurotoma (Thesbia) xanthias, n. sp. 



a. The. natural size. 



b. The shell, enlarged. 



Fig. 11. Clathurclla cola, n. sp. . 



a. The natural size. 



b. The shell, enlarged. 



Fig. 12. Clathurella homasotata, n. sp. 



a. The natural size. 



b. The shell, enlarged. 



Fig. 13. Clathurella porcellana, n. sp. 



a. The natural size. 



b. The shell, enlarged. 



Fig. 14. Clathurella phyxanor, n. sp. 



a. The natural size. 



b. The shell, enlarged. 



c. The apex, magnified 25 diameters. 



The apex, magnified 40 diameters. 



c. The apex, magnified 30 diameters. 



c. The apex, magnified 60 diameters. 



c. The apex, magnified 30 diameters. 



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