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Spurilla neapolitana
''Spurilla neapolitana'', the Neapolitan spurilla, is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusk in the family Aeolidiidae. It is native to the western Atlantic Ocean, the Caribbean Sea and the Mediterranean Sea. This species was first described as ''Eolis neapolitana'' by the Italian naturalist Stefano delle Chiaje in 1841. However, although some authorities quote the year as 1823, the species does not appear in the first volume of delle Chiaje's memoirs, which was published that year. The species was later reassigned to the genus ''Spurilla''.
==Description==
''Spurilla neapolitana'' is a large nudibranch, growing to a length of in the Mediterranean Sea. The rhinophores (the pair of sensory structures on the dorsal surface of the head) are lamellate. The cerata (outgrowths of the body) are also flattened and have opaque white tips. These tips are known as cnidosacs and are defensive structures armed with cnidocytes (stinging cells) garnered from sea anemones that the nudibranch has eaten.〔 The general colour of this species is orange or pinkish, perhaps depending on what it has been eating, often with dark streaking where the tortuous digestive gland is visible through the translucent skin and the walls of the cerata. Some individuals have opaque patches of white on the body wall.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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