A Rosetta Stone for eastern Pacific Caecidae (Gastropoda: Caenogastropoda)
FIGURE 6. Caecum firmatum. A–B. Profile views depicting color and sculpture variations (LACM 1967-17.44). C. Ventral view (LACM 1967-17.44). D. Operculum, exterior surface (SBMNH 214990). E. Operculum, interior surface (LACM 1967- 17.44). F. Lectotype, MCZ 186578. G. Close-up of sculpture (MCZ 186578). H. C. eburneum, paralectotype, MCZ 186576. I. Close-up of sculpture (MCZ 186576). J. C. pygmaeum, holotype, MCZ 186587. K. Close-up of sculpture (MCZ 186587). L. C. monstrosum, lectotype, MCZ 186584. M. Close-up of sculpture (MCZ 186584). N. C. diminutum, holotype, MCZ 186574. O. Close-up of sculpture (MCZ 186574). P. C. agoniatum, syntype, MNHN-IM-2000-4579. Q. C. elegans var. rubella, syntype, MNHN-IM-2000-4580. R. C. impartitum, syntype MNHN-IM-2000-4599. S. C. suave, holotype, MNHN-IM-2000-4585.
FIGURE 7. Caecum firmatum shells at different growth stages. A. Protoconch and teleoconchs I to II (LACM 1967-17.44). B. Surface of teleoconch I (LACM 1967-17.44). C. Surface of teleoconch II (LACM 1967-17.44). D. Teleoconchs I to V (SBMNH 214990). E. Surface of teleoconch III (SBMNH 214990). F. Surface of teleoconch IV (SBMNH 214990). G. Teleoconchs I to V (SBMNH 214990). H. Surface of teleoconch V (SBMNH 214990). I. Teleoconch V (MCZ 186577).
FIGURE 8. Caecum firmatum. A. Conceptual reconstruction of growth stages. B. Species distribution map.