The Annals and magazine of natural history; zoology, botany, and geology . plates of different sizes, project- with irregular contortedmg from the wall ofthe cavity. The parietcsare thin; the upper edgeof the cavity is thin,sinuous, and not show-ing any indication ofhaving been attached toany marine hody. Theapex of the coil is sunk inone side of the wall of thelarge cup-like sponge. The second specimen issomewhat like the former;but the upper part of thewall is broken away, theparietcs are thickened,and there are three un-equal conical concavities,the middle one muchdeeper than the rest. The
The Annals and magazine of natural history; zoology, botany, and geology . plates of different sizes, project- with irregular contortedmg from the wall ofthe cavity. The parietcsare thin; the upper edgeof the cavity is thin,sinuous, and not show-ing any indication ofhaving been attached toany marine hody. Theapex of the coil is sunk inone side of the wall of thelarge cup-like sponge. The second specimen issomewhat like the former;but the upper part of thewall is broken away, theparietcs are thickened,and there are three un-equal conical concavities,the middle one muchdeeper than the rest. The third specimen ismuch more imperfect. Itis a square spongy mass,which has been crushedand disintegrated; it hasonly a moderate-sizedcentral conical concavity;but a great part of the cupis wanting. As far as I have seen,all the sponges are moreor less cup-shaped, witha central conical opencavity. 2. Hyalotiema Schultzei isprobably a distinctspecies, as it camefrom the Philippines;but it is describedprobably from a deadspecimen of a coilthat had lost its barkand Hyalonema Sieboldii, gTOwing in the mud>reduced to ^ the natural size. a. thecontracted polypes on the apex, larger;b. the parasitic sponge on the apex. 276 Dr. W. C. Mcintosh on the Boring of certain Annelids. Hyalothrix, Gray, P, Z. S. 1867, p. 119. Bark smooth. Polypes oblong when contracted, low. Ten-tacles 40. IhjahtJirix lusitanica^ Grray, I. c. 1867, p. 119. Type Ht/almie7na lusitmiicimi, Bocap-e, P. Z. S. 1864, p. 205, t. 22 ; 1865,?p. 662; Gray, Ann. & Map:. Nat. Hist. 1866, xvii. p. 287; Loven, Mag. N. IT. 1868, p. 90. Var. sjyongifera. H, hisitanicmn, Bocape, Ann. & Mag. Nat. Hist. 1868, ii. p. 36; Bow-erbank, P. Z. S. 1867, p. 902. Hob. Portugal. Dr. Perceval Wright, who has just returned fromdredging for Hyalonemata on the coast of Portugal, informs me(Sept. 14) that he believes the coral {H. lusitanicuvi) grows atthe bottom of the sea in deep water, with the free part of thecoil
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