Hirudinea Annuli
Dec. 23, 2024
On the origin of leeches by evolution of development - Kuo - 2019 - Development, Growth & Differentiation - Wiley Online Library Phylum Annelida the segmented worms - ppt video online download Fresh-water biology. Freshwater biology. THE LEECHES (HIRUDINEA) 653 17 (18) Anus at XXIII-XXIV and following somites forming a narrow sucker pedicle. Gastric ceca branched once; very con- tractile; no cutaneous papillae. Hirudinea Annuli