English: Antarctolineus scottii (=Lineus scottii; Nemertea: Heteronemertea: Lineidae) collected by Terra Nova Expedition. 1 – Ventral view of the anterior end of one of the smaller specimens, magnified, and showing the mouth, cephalic slits, proboscis pore, and the groove forming a “V” immediately in front of the mouth. 2 – Transverse section towards the middle of the body: B. S. — blood sinus; C. M. — circular muscle layer; D. N. — dorsal nerve; D. V. — dorsal blood vessel; Gl. — glandular layer of the integument; Int. — intestine; L. M¹. — inner longitudinal muscle-layer; L. M². — outer long
English: Antarctolineus scottii (=Lineus scottii; Nemertea: Heteronemertea: Lineidae) collected by Terra Nova Expedition. 1 – Ventral view of the anterior end of one of the smaller specimens, magnified, and showing the mouth, cephalic slits, proboscis pore, and the groove forming a “V” immediately in front of the mouth. 2 – Transverse section towards the middle of the body: B. S. — blood sinus; C. M. — circular muscle layer; D. N. — dorsal nerve; D. V. — dorsal blood vessel; Gl. — glandular layer of the integument; Int. — intestine; L. M¹. — inner longitudinal muscle-layer; L. M². — outer longitudinal muscle-layer; L. N. — lateral nerve stem; L. P. — nerve plexus; P. S. — cavity of proboscis sheath. 3 – Portion of the outer part of the body wall in transverse section, highly magnified. B. M. – (secondary) basement membrane; C. M². – layer of circular muscle fibres; C. T. – connective tissue strands; Ep. – external epithelium; Gl. – glandular layer; Gl². – gland cells of the epithelium; L. M². – outer longitudinal muscles. 4 – Transverse section immediately behind the brain. 5 – Transverse section through the middle region of the body of a female specimen. 6 – Transverse section through the proboscis, highly magnified. . 1915 76 Terra Nova Expedition. Nemertinea. Plate II
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