254 NILS HJ. ODHNER 
Explanation of the Plates. 
Plate 8. 
Figs. 1, 2. Acmaea juanina n. sp. X 2,5. 
Figs. 3, 4. Avicula (Stempellia) aequivalvis n. sp. X 4. 
Fig. 5. Melampus pascus n. sp. X 4. 
Fig. 6. Tvrifora levukensis Watson. X 5,5. 
Fig. 7. Tvrifora basalis n. sp. X 5,5. 
Fig. 8. Cerithiopsis dispar n. sp. X 5,5- 
Fig. 9. Columbella (Mitrella) lignaria n. sp. X 5,5. 
Fig. 10. Scalaria (Clathrus) juanina n. sp. X 5,5. 
Figs. 11, 12. Evvilia producta n. sp. X 4. 
Figs. 13, 14. /Juanella sparsa n. sp. X 2'/2. 
Figs. 1517. Pacificella variabilis n. sp. Early neanic (fig. 17), older neanic (fig. 16), and ephebic 
(ieeer7) «stages X10: 
Figs. 13—20. Punctum conicum n. sp. Puerto Ingles. X 15. 
Figs. 21—23. Punctum conicum var. dilatatum. X15. 
Figs. 24—26. Punctum depressum n. sp. The Yunque quebrada. Io. 
Plates: 
Figs. 27—29. Endodonta involuta n. sp. X 10. 
Figs. 30—32. LEudodonta occulta n. sp. The Yunque quebrada. 10. 
Figs. 33—35. Stephanoda guadrata Férussac. Salsipuedes Ridge. X 5. 
Fig. 36. TZornatellina bilamellata Anton, three-toothed variety. X 8. 
Fig. 37. Zornatellina conica Anton. Pangal.  X 8. 
Figs. 38—40. Tornatellina plicosa n. sp. Portezuelo. Gerontic stage (fig. 38), much advanced 
neanic stage (fig. 39), and neanic stage of normal size with reduced dentition (fig. 40). X 10. 
Figs. 41, 42. Tornatellina plicosa n. sp. Centinela Ridge. Two specimens of the neanic stage 
showing variation. % Io. 
Figs, 43, 44. Tornatellina callosa n. sp. Centinela Ridge. Ephebic (fig. 43) and gerontic (fig. 44) 
stage.  X IO. 
Figs. 45, 46. Tornatellina aperta n. sp. Gerontic stage, Rabanal (fig. 45), and neanic stage, 
Puerto Ingles (fig. 46). X 10. 
Fig. 47. Fernandezia bulimoides Pfeiffer. Damajuana.  X 5. 
Fig. 48. Fernandezia splendida Anton. Salsipuedes Ridge. X 5. 
Fig. 49. FKernandezia cylindrella n. sp. Rabanal. X 10 
Fig. 50. Succinea texta n. sp. El Puente. a X 21/2; sculpture x 10(%) and X 30(¢). 

