FIGS 16 in Some heteronemerteans (Nemertea) from the Solomon Islands

FIGS 16±23. Kukumia solomonensis gen. et sp. nov. (16) Transverse section through part of the foregut wall, showing its epithelium and subepithelial gland cell zone. (17) Transverse section through the brain just behind the origin of the mid-dorsal blood vessel (indicated by an arrow) to show part of the U-shaped blood vessel arching below the rhynchocoel. (18) Transverse section through the brain close behind the previous photomicrograph to show the mid-dorsal, mid-ventral and lateral blood vessels and the anterior region of an outer blood channel alongside a dorsal cerebral lobe and a cerebral sensory organ. (19) Transverse section just behind the brain to show a cerebral sensory organ bathed by a spacious blood channel; the lateral vessel between the cerebral organ and rhynchocoel joins with the outer channel just posterior to this level. (20) Transverse section through the rhynchocoelic villus. (21) Transverse section through part of the intestinal region to show the thick walls of a lateral blood vessel. (22) Transverse section through a convoluted region of a lateral blood vessel. (23) Transverse section through the head to show the wide cephalic furrows and general appearance of the cephalic region. All photomicrographs of the holotype, sections stained with the Mallory trichrome method. Scale bars: (16, 20) 5100 mm; (17– 19, 23) 5500 mm; (21, 22) 550 mm.