| 释义 |
siˈpunculid, n. (and a.) Zool.
[f. mod.L. (Linnæus Systema Naturæ (ed. 12, 1766) I. ii. 1078); see prec. and -id3.]
A gephyrean worm of the family Sipunculidæ. Also as adj.
1888Rolleston & Jackson Anim. Life 619 A caecum is sometimes present at the commencement of the rectum in Sipunculids. 1893Proc. Zool. Soc. 328 The papillæ..characteristic of the skin of Sipunculids. 1928Russell & Yonge Seas i. 20 The Sipunculids..have a protrusible proboscis and a tough leathery body. 1941,1967[see echiuroid a. and n.]. 1974Sci. Amer. Apr. 88/2 Probably a fourth type consisted of unsegmented burrowers that fed on surface detritus and gave rise to the modern sipunculid worms. |