. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 1 '_ i- -L-hk. LL /..eg. ^ / 1. Spadella draco (2). Flat broad edged crest cr on edge of shaft. Point // inserted one fourth to one fifth its height into shaft. Old jaws- have ser- rations on the lower end of the shaft, which dwindle in size as they approach the point, disappearing entirely while still some distance from the point. Group 2 (Figs. 3, 4 and 5). Point // with an oval base b. Back of point b/cpt has greater curvature than the back of the shaft bk ; edge of point egpt and edge of shaft eg have the same cur
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 1 '_ i- -L-hk. LL /..eg. ^ / 1. Spadella draco (2). Flat broad edged crest cr on edge of shaft. Point // inserted one fourth to one fifth its height into shaft. Old jaws- have ser- rations on the lower end of the shaft, which dwindle in size as they approach the point, disappearing entirely while still some distance from the point. Group 2 (Figs. 3, 4 and 5). Point // with an oval base b. Back of point b/cpt has greater curvature than the back of the shaft bk ; edge of point egpt and edge of shaft eg have the same curvature so that the junction of the back and edge of the point at the apex lies toward the edge. Pulp p runs slightly nearer the back of the shaft bk. Shaft evenly. 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 original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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