Snails, mussels, clams and starfishes (Mollusca and Echinodermata) . - 10 prepared slides in box

59-5156 Snails, mussels, clams and starfishes (Mollusca and Echinodermata) 59-5156/1 Snail (Helix), foot t.s., mucous glands and muscle fibres 59-5156/2 Snail (Helix), liver t.s. showing glandular tissue 59-5156/3 Slug (Arion), young specimen, region of midbody with internal organs, t.s. 59-5156/4 Clam (Mya arenaria), adductor muscle of shell. l.s. 59-5156/5 Clam (Mya arenaria), t.s. through siphon tube 59-5156/6 Squid (Sepia), skin with chromatophores 59-5156/7 Cuttlefish (Octopus), tentacle with sucking tube t.s. 59-5156/8 Starfish (Asterias), arm with tube feet, t.s. 59-5156/9 Serpent star (Ophiura), t.s. of arm (ray) 59-5156/10 Sea-urchin (Psammechinus), l.s. or t.s. of entire young specimen