. Bulletin - United States National Museum. Science. 290 BULLETIN 100, UNITED STATES NATIONAL MUSEUM with the valves of regular shape, with a rather small terminal opening and a small but distinct end tooth. These usually have a long stalk, up to about mm. in length, which makes them quite conspicuous, though the head scarcely exceeds mm. in length. The other form. Fig. 19.—Apical system of Stylocidaris effluens, new species. In 6 one of the oculars is abnormally divided into several smaller plates. 0x6, 6x4 (pl. 80, figs. 1-3) is very short stalked; the head, which is about mm. lo
. Bulletin - United States National Museum. Science. 290 BULLETIN 100, UNITED STATES NATIONAL MUSEUM with the valves of regular shape, with a rather small terminal opening and a small but distinct end tooth. These usually have a long stalk, up to about mm. in length, which makes them quite conspicuous, though the head scarcely exceeds mm. in length. The other form. Fig. 19.—Apical system of Stylocidaris effluens, new species. In 6 one of the oculars is abnormally divided into several smaller plates. 0x6, 6x4 (pl. 80, figs. 1-3) is very short stalked; the head, which is about mm. long, is inclosed in a rather thick, apparently glandular skin; the valves are slender, with irregular serrate crests, and a small more or less irregular terminal opening, sometimes with a fairly distinct. 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 United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
