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Show 344 ECliiNODERMA. T A.. 1 ecies that I know in the M. holothur'l..o "t d es, Cuv • The on' ty stpe rminates .m a p o'tnt . Atlan• t.l c Ocean. The anal extremt y MINYAs, Cuv. 't te of feet an d open at both extremid· Where the body is also destl u heroid depressed at the poles, an tt. es; b u t 'ts form is that of asp mature about the mouth. 1 I n find no ar A b d like a melon. ca . IV pl. xv' f. 8( 1 ). eau-furrowe R~ Antm., ' . h A 1 t' M. C~Janea Cuv., ~gn., l that inhabtts t e t an tc tiful• sp" ecies' of a d eep-blue co our ocean(l). PRIA.PULUS, Lam. . . nd transversely marked wit~ deep Where the body is cyhndncal ~ 1 by an elliptical mass shghtly lar rugre, terminated antertordy by the mouth, and posteriorly annu . . ll perforate h' h rinkled longttudma .Y' . hick bundle of filaments w 1c. w the anus, from whtch tss~es a ~he interior of the mouth lS by be organs of generatton. f xtremely sharp and horny teeth may 'ded with a great number o ed b kwards· the intestine pro· provt d directe ac ' 1 arranged ·m quincun. x, fa n the mouth toth e anus. The museu ar . t ight hne rom . ceeds m a s ra h Holothurtre. I esembles that or t e M"ll Zool. Dan., XCV I system r z h · priapus, u ·' h P vulgaris; Hoot urta . . 1 th inhabits nort ern •I t is from two t o three mches m eng ' s1e. as., an d .t s the only species known. LITHODERMIS, Cuv4 d posteriorly; its surface Where the body is oval and comxr;~:~ a layer of stony granules, has the appearance ofbein_g cov~:~ crust. The mouth is surrounded h. ch form an extremely md~ra to be analogous to those of w 1 h intestmes seem . ith tentacula, and t e that I can perceive. w . 'fh have no anus . 1 th From the Holothurtre. ey k' h and two inches m eng . C Blac ts , 1 L. cuneus, .uv. he only species known. n the seas of Indta, and t ( b M Peron. 1) Taken to France Y · A POD A, 345 SIPUNCULus, Gm. The body is cylindrical and elongated, the skin thick ancl wrinkled in both directions. The mouth is provided with a sort of proboscis susceptible of retraction and protrusion by the action of large internal muscles, and the anus is more or less approximated to the base of that organ. The intestine proceeds from the mouth to near the opposite extremity, and then returns, twining spirally round itself. The only matters found in it are sand and fragments of shells. Numerous vessels appear to unite it with the external envelope, besides which, a thread extends along one of its sides which may possibly be nervous. Two long bursre, situated anteriorly, open exteriorly a little below the anus, and near this last orifice, internally, we sometimes find a bundle of ramous vessels which may be organs of respiration. These animals are found in the sands of the sea, like the Arenicolre and Thalassemre, and like them are used as bait by the fishermen. & edulis, Cuv.; Lumbricua edulis, Gm.; Pall., Spicil. Zool., X, 1, 7. This species is eaten by the Chinese inhabitants of Java, who procure it from the sands by means of slender bamboos prepared for the purpose( 1 ). Other and rather small species-Sp. kevis, Sip. verrucosua, Cuv.-perforate submarine rocks and live in their cavities. BoNELLIA, Rolando. Here the body is oval and furnished with a proboscis formed of a . double lamina susceptible of great elongation and forked at tbe extremity. The anus is at the opposite extremity of the body. The intestine is very long and frequently flexed, and near the anus we (1) I cannot perceive where this species differs from the Vermis macrorltyncko· teros, nondel., of the snit-ponds of Languedoc, which is the SipunculU8 nudu1t of Linn reus. The Sipunculua saccatua appears to be a specimen divested of its epidermis. In one species the epidermis is pilose, in another the skin is entirely cori:lceous; neither of them is mentioned by authors. The seas of India produce one that is nearly two feet in length. VoL. IV.-2T |