PLATE XV. 



i. Scala Tydemani n. sp. 



I ig. 2. S<ti/ii abyssicola n. sp. <?. smaller, b. larger specimen. 

 \la fragilissima n. sp. a. smaller, b. larger specimen. 

 4. Scala Nierstraszt n. 

 Fig. 5. Rimella Tyleri Ads. <?. larger, /». smaller specimen. 

 Fig. 6. Teeth of radula of Amphiperas philippinarum Sou. (see p. 144). 



7. Teeth of radula of Gyrineum cuspidatum Rve. 



8. Teeth of radula of Amphiperas .. \(N.i Rve. (see p. 144). 

 Fig. 9. Teeth of radula of Amphiperas secale Sow. (see p. 145). 



Fig. 10. Teeth of radula of Calpurnus verrucosus Lin. 



Fig. 11. Teeth of radula of Argyropeza divina Melv. & Stand. 



Fig. 12. Teeth of radula of Seguenzia Melvilli n. sp. 



