. Fig. 7. Pneumodermopsis paucidens. Outline drawings of a representative group of twelve specimens from station WS 996, showing some of the variations of form encountered in preserved material. adult life. The hook-sacs are extremely small, forming a pair of short, blunt outgrowths at the sides of the buccal mass, each containing a cluster of short chitinized hooks. The posterior (or median) lobe of the foot is long, tapering and slender. The species represented here is clearly P. paucidens Boas. Its chief distinguishing character is the number and arrangement of the suckers borne on the acet
. Fig. 7. Pneumodermopsis paucidens. Outline drawings of a representative group of twelve specimens from station WS 996, showing some of the variations of form encountered in preserved material. adult life. The hook-sacs are extremely small, forming a pair of short, blunt outgrowths at the sides of the buccal mass, each containing a cluster of short chitinized hooks. The posterior (or median) lobe of the foot is long, tapering and slender. The species represented here is clearly P. paucidens Boas. Its chief distinguishing character is the number and arrangement of the suckers borne on the aceta- buliferous appendages inserted on the dorsal wall of the buccal cavity. There is a long median arm with a single large terminal sucker, more than twice the size of the lateral suckers, and much larger indeed than might be deduced from the diagrammatic illustration of Tesch's key (1950). Two pairs
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Keywords: ., bookcentury1900, booksubjectocean, booksubjectscientificexpediti
