. Cephalopoda. Cephalopoda. FIGURE 137. Almost adult femaie of A b ra 1 io psis morrisi. Natural size; after a specimen from Naples, a) ventral, b) dorsal. The habitus resembles that of Abralia (Figure 134), but the gladius is more distinct. The figure shows the structure of the posterior end, the distribution of luminous organs on head and mantle, funnel pit, funnel adductors, neck folds, structure of tentacles and arms (especially the protective and swimming margins), terminal swellings of the ventral arms. Co - conus of gladius; behind the cone is the fleshy apex with a central supporting c
. Cephalopoda. Cephalopoda. FIGURE 137. Almost adult femaie of A b ra 1 io psis morrisi. Natural size; after a specimen from Naples, a) ventral, b) dorsal. The habitus resembles that of Abralia (Figure 134), but the gladius is more distinct. The figure shows the structure of the posterior end, the distribution of luminous organs on head and mantle, funnel pit, funnel adductors, neck folds, structure of tentacles and arms (especially the protective and swimming margins), terminal swellings of the ventral arms. Co - conus of gladius; behind the cone is the fleshy apex with a central supporting cord (Sp) which occupies the position of the rostrum (Figure 157 on p. 319). The smaller figure shows the third longitudinal neck fold (2) with a muscular pillar (1) which bears the olfactory tubercle. The dots (luminous organs) in "a" should be distributed uniformly on the mantle. Particularly characteristic are the tentacle clubs (Figure 138). They bear a carpal group of 4 or 5 suckers and between them at least the same number of strongly pigmented knobs. Then follows a bare area, followed by the hand part with 5 (4—5) large, wide, prehensile hooks corresponding to the ventral median row, and 4 (4—5) small adhesive (rotating) hooks which cor- respond to the dorsal median row. The ventral marginal row is absent, the dorsal row consists of very small suckers. There is a short distal part with 4 rows of small suckers and a typical end part which is curved inward. The hand part varies markedly. Instead of the small hook shown in Figure 138 there may be a small sucker (8) near the last large hook. One or both rows may consist of only 4 hooks. One of the first hooks may also be replaced by a sucker. We observed the following pattern in four specimens (A—D): 268. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the ori
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Keywords: ., bookcentury1900, bookcollectionbiodivers, booksubjectcephalopoda
