FIGURE 4 in Multigene phylogeny reveals the ribbed shell morphotypes in the land snail genus Sarika (Eupulmonata: Ariophantidae), with description of two new species from Thailand and Myanmar

FIGURE 4 Genitalia of Sarika spp. A, B) S. theodori, specimen CUMZ 7941. A) General view of the genital system. B) Internal structure of penis. C, D) S. siamensis, specimen CUMZ 7952. C) General view of the genital system. D) Internal structure of penis. Yellow arrow indicates the end of epiphallic caecum. White arrows indicate the end of penis.