FIGURE 8. Shells in Drymaeus (Drymaeus). A─C. D. (D.) extraneus (Haas, 1955). A─B. Holotype FMNH 49736; C. FMNH 49734. D─F. D. (D.) steyermarki (Haas, 1955), holotype FMNH 49735. G─H. D. (D.) yapacanensis Breure & Eskens, 1981, holotype RMNH 55331. I─S. Drymaeus (Drymaeus) rex spec.nov. I─M, Q─S. Paratypes UF 284745, 284730, 284759, 284748, 284714, 284719, 284719 and 284715 respectively; N─P. Holotype UF 284726. Scale bar—1 cm.Published as part of Breure, Abraham S. H., 2009, New Orthalicidae (Mollusca, Gastropoda) from Venezuelan Guayana: unravelling secrets from the Lost World, pp. 25-50 in Zootaxa 2065 on page 41, DOI: 10.5281/zenodo.18692
FIGURE 4. Genitalia in Plekocheilus spp. A. P. (P.) vlceki spec. nov., RMNH 114233; B–C. P. (Eurytus...
FIGURE 2. Genitalia in Plekocheilus (Eurytus). A. P. (E.) t a te i Haas, 1955, FMNH 50346; B ─ D. P....
FIGURE 3. Plekocheilus (Eurytus) nebulosus spec.nov., extended penis UF 284717. A. Dorsal view; B. v...
FIGURE 8. Shells in Drymaeus (Drymaeus). A ─ C. D. (D.) extraneus (Haas, 1955). A ─ B. Holotype FMNH...
FIGURE 6. Shells in Plekocheilus. A ─ C. P. (Eurytus) mundiperditi Haas, 1955, RMNH 112030. Photos J...
FIGURE 4. Shells in Plekocheilus. A ─ D. P. (P.) fulminans linterae (Sowerby, 1890). A ─ C. Lectotyp...
FIGURE 2. Shells of Plekocheilus spp. A–C. P. (P.) vlceki spec. nov., holotype RMNH 114233. D–G. P. ...
FIGURE 7. Drymaeus (Drymaeus) rex spec.nov. A. Genitalia UF 284722; B. Longitudinal section penis; C...
FIGURE 8. Plekocheilus s.str. A–F. P. (P.) glandiformis (Lea, 1838). A–C. Holotype, USNM 105045 (H 3...
FIGURE 5. Shells in Plekocheilus (Eurytus). A ─ C. P. (E.) s o p h i a e spec. nov., holotype UF 244...
FIGURE 18. A–K. Plekocheilus (Eurytus). A–B. P. (E.) camaritagua spec. nov., holotype ICNB (H 56 mm)...
FIGURE 8. Parvanachis shells. All are preserved specimens, so some dark areas on the body whorls of ...
FIGURE 10. Distribution of high- and upland species in Venezuelan Guayana. A. Plekocheilus. Symbols:...
Figure 8 - Placostylus fibratus subspecies. A–D Placostylus fibratus guestieri (Gassies, 1869) A, i ...
FIGURE 3. Living specimens of Plekocheilus spp. A–B. P. (P.) vlceki spec. nov., under laboratory con...
FIGURE 4. Genitalia in Plekocheilus spp. A. P. (P.) vlceki spec. nov., RMNH 114233; B–C. P. (Eurytus...
FIGURE 2. Genitalia in Plekocheilus (Eurytus). A. P. (E.) t a te i Haas, 1955, FMNH 50346; B ─ D. P....
FIGURE 3. Plekocheilus (Eurytus) nebulosus spec.nov., extended penis UF 284717. A. Dorsal view; B. v...
FIGURE 8. Shells in Drymaeus (Drymaeus). A ─ C. D. (D.) extraneus (Haas, 1955). A ─ B. Holotype FMNH...
FIGURE 6. Shells in Plekocheilus. A ─ C. P. (Eurytus) mundiperditi Haas, 1955, RMNH 112030. Photos J...
FIGURE 4. Shells in Plekocheilus. A ─ D. P. (P.) fulminans linterae (Sowerby, 1890). A ─ C. Lectotyp...
FIGURE 2. Shells of Plekocheilus spp. A–C. P. (P.) vlceki spec. nov., holotype RMNH 114233. D–G. P. ...
FIGURE 7. Drymaeus (Drymaeus) rex spec.nov. A. Genitalia UF 284722; B. Longitudinal section penis; C...
FIGURE 8. Plekocheilus s.str. A–F. P. (P.) glandiformis (Lea, 1838). A–C. Holotype, USNM 105045 (H 3...
FIGURE 5. Shells in Plekocheilus (Eurytus). A ─ C. P. (E.) s o p h i a e spec. nov., holotype UF 244...
FIGURE 18. A–K. Plekocheilus (Eurytus). A–B. P. (E.) camaritagua spec. nov., holotype ICNB (H 56 mm)...
FIGURE 8. Parvanachis shells. All are preserved specimens, so some dark areas on the body whorls of ...
FIGURE 10. Distribution of high- and upland species in Venezuelan Guayana. A. Plekocheilus. Symbols:...
Figure 8 - Placostylus fibratus subspecies. A–D Placostylus fibratus guestieri (Gassies, 1869) A, i ...
FIGURE 3. Living specimens of Plekocheilus spp. A–B. P. (P.) vlceki spec. nov., under laboratory con...
FIGURE 4. Genitalia in Plekocheilus spp. A. P. (P.) vlceki spec. nov., RMNH 114233; B–C. P. (Eurytus...
FIGURE 2. Genitalia in Plekocheilus (Eurytus). A. P. (E.) t a te i Haas, 1955, FMNH 50346; B ─ D. P....
FIGURE 3. Plekocheilus (Eurytus) nebulosus spec.nov., extended penis UF 284717. A. Dorsal view; B. v...