FIGURE 4 in Phyllodesmium rudmani (Mollusca: Nudibranchia: Aeolidoidea), a new solar powered species from the Indo­West Pacific with data on its symbiosis with zooxanthellae

FIGURE 4. Phyllodesmium rudmani, histology: A: Ramification of the digestive glandular branches beneath epidermis in large ceras. B: Multiple sac­like structures of the digestive glandular branches beneath epidermis of ceras. Note the zooxanthellae inside the digestive glandular cells and the lumen of the branches. C: Zooxanthellae inside the tissue of the terminal digestive glandular branches. Note the highly vacuolated cells of the epidermis. D: Zooxanthellae surrounded by digestive glandular cells from the lumen of a midgut branch. Note the dividing zooxanthellae cell (left middle).