. Cephalopoda. Cephalopoda. The buccal funnel (Figure 7 7) shows the typical characters of the Decapoda, Teuthoidea and Metateuthoidea. The 7 pillars and points bear two inner rows of suckers like those on the arms.* The pillars or oral 179 arms (Figure 78) are rooted at the base of the arms. The dorsal pillar is situated between the dorsal arms, the dorsolateral between the first and second arm on each side, the lateroventral at the ventral inner edge of the base of the third arm,the ventral at the base of the fourth arm near the median inner edge. Small folds ("fastenings") pass ou
. Cephalopoda. Cephalopoda. The buccal funnel (Figure 7 7) shows the typical characters of the Decapoda, Teuthoidea and Metateuthoidea. The 7 pillars and points bear two inner rows of suckers like those on the arms.* The pillars or oral 179 arms (Figure 78) are rooted at the base of the arms. The dorsal pillar is situated between the dorsal arms, the dorsolateral between the first and second arm on each side, the lateroventral at the ventral inner edge of the base of the third arm,the ventral at the base of the fourth arm near the median inner edge. Small folds ("fastenings") pass outward from the bases of the 7 pillars but do not reach the protective margins of the arms. The inner side of the buccal funnel or the membrane connecting the pillars is coarsely wrinkled and folded. These conditions are typical for all recent Decapoda (p. 122). 180. FIGURE 79. Mouth region of a male Loligo vulgaris. Same preparation as in Figures 77 and 78 but with the buccal funnel removed, except for the adjacent parts. The buccal pockets are expanded into the head between arm bases and mouth mass, making this as movable as the arm bases by the deepening of the tentacle pockets (p. 177). The attachment of the buccal membrane is pushed toward the mouth cone and assumes the hexagonal form typical for all recent Teuthoidea (Metateuthoidea) (p. 159). The buccal funnel consisting of 6 parts (cf. Plate 111, Figure 2) appears therewith prepared. Note also the structure of the arms: swimming margins, protective margins, protective membranes, the muscular pillars between them, the insertion of the tentacles and the base of the fastening ligaments. 1—4 — bases of buccal pillars (cut); M3, v, i, a, hs —as in Figure 77; y — attachment of buccal membrane on mouth cone; x — connection between buccal membrane and dorsal pillar; z — similar connection with the ventral pillars; u — predestined site for the fusion of the two ventral pillars. I formerly believed that 1 was the fir
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Keywords: ., bookcentury1900, bookcollectionbiodivers, booksubjectcephalopoda
