Pycnogonida
海蜘蛛亞門
Pyc·no·gon·i·da n. pl. Zool. A class of marine arthropods in which the body is small and thin, and the eight legs usually very long; -- called also Pantopoda.
Note: ☞ The abdomen is rudimentary, and the triangular mouth is at the end of a tubular proboscis. Many of them live at great depths in the sea, and the largest of them measure two feet across the extended legs.
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Pycnogonida
n : sea spiders [syn: order Pycnogonida]