. The Cephalopoda. Cephalopoda. 536 figure 67. Eye of Vampyroteuthis. figure 68. Internal shell of Vampyroteuthis. of the arms, especially on the dorsal arms; distally they gradually become denser and smaller, so that the apical cirri are barely recognizable. Suckers are absent in the proximal half of the arms. A few (3-6) small suckers form a single row on the distal half of each arm; they are wart-shaped, with a small opening in the middle. Text Figure 68 shows the outline of the thin, hyaline membrane of the shell of the specimen from Station 85. It is pointed anteriorly, tapers posteriorly
. The Cephalopoda. Cephalopoda. 536 figure 67. Eye of Vampyroteuthis. figure 68. Internal shell of Vampyroteuthis. of the arms, especially on the dorsal arms; distally they gradually become denser and smaller, so that the apical cirri are barely recognizable. Suckers are absent in the proximal half of the arms. A few (3-6) small suckers form a single row on the distal half of each arm; they are wart-shaped, with a small opening in the middle. Text Figure 68 shows the outline of the thin, hyaline membrane of the shell of the specimen from Station 85. It is pointed anteriorly, tapers posteriorly and has numerous concentric growth lines; it is 9 mm long and mm wide. The asymmetry is probably an individual irregularity. Two flat, rounded, yellowish warts situated in the funnel not far from the anterior margin are probably a homologue of the funnel organ. The ring-shaped lip which surrounds the pharynx shows 15 equally spaced indentations. The jaws have sharp points. The upper jaw is narrow, its outer part has a distinct edge, the inner part is short and rounded (Text Figure 69). The radula is well developed and of simple form (Text Figure 70). The middle plate is slightly concave anteriorly, rounded posteriorly, slightly longer than wide, with a short, sharp cutting edge. The next pair of plates is of similar form and size but slightly asymmetrical; the following plate is much larger and wider and has a stronger cutting edge which begins at the inner corner. The simple lateral plate is distinctly curved and fairly large; next to it is a narrow, squamous figure 69. Upper jaw of Vampyroteuthis. figure 70. Vampyroteuthis infernalis; part of radula. The head cartilages are rudimentary, the connective tissue soft and transparent. The intestine is brown. The pharynx is followed by a narrow, dark part which passes gradually into a widened, croplike, long, lighter-colored part; it then narrows again and opens into the stomach. The liver is large and yellowish. The a
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Keywords: ., bookcentury1900, bookcollectionbiodivers, booksubjectcephalopoda
