8 54 NILS HJ. ODHNER 



Explanation of the Plates. 



Plate 8. 



2. Acmaea juanina n. sp. X 2,5. 



4. Avicula (Stenipellia) aequivalvis n. sp. X 4- 



Melampus pascus n. sp. X 4- 



Trifora levukensis Watson. X 5,5. 



Trifora basalts n. sp. X 5,5. 



CertthioPsis dispar n. sp. X 5,5- 



Coluvibella (Miirella) lignatia n. sp. X 5,5. 

 Fig. 10. Scalaria (Clathrus) juanina n. sp. X 5,5- 

 Figs. II, 12. Ervilia producta n. sp. X 4- 

 Figs. 13, 14. Juanella sparsa n. sp. X 2'/2- 

 Figs. 15 — 17. Pacificella variabilis n. sp. Early neanic (fig. 17), older neanic (fig. 16), and ephebic 



(fig. 17) stage. X 10. 

 Figs. 18 — 20. Pimctum conicum n. sp. Puerto Ingles. X 15. 

 Figs. 21 — 23. Punctum conicum var. dilataiuvi. X 15. 

 Figs. 24 — 26. Punctum depressum n. sp. The Yunque quebrada. X 10. 



Plate 9. 



Figs. 27—29. Endodonta involuta n. sp. X 10. 



Figs. 30 — 32. Endodottta occulta n. sp. The Yunque quebrada. X 10. 



Figs. 33 — 35. Stephanoda quadrata Ferussac. Salsipuedes Ridge. X 5. 



Fig. 36. Tornatellina bilamellata Anton, three-toothed variet\'. X 8. 



Fig. 37. Tornatellina 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. X 10. 

 Figs, 43, 44. Tornatellina callosa n. sp. Centinela Ridge. Ephebic (fig. 43) and gerontic (fig. 44) 



stage. X 10. 

 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 S- 

 Fig. 49. Fernandezia cylindrella n. sp. Rabanal. X 10. 

 Fig. 50. Succinea texta n. sp. El Puente. a X 2V2; sculpture X 10 (^) and X 30 (t). 



