CIRRHOVODA. 
121 
of six projecting pieces, separated by as many depi’essed ones, three of 
which are narrower than the others. Their base is usually formed of 
a calcareous lamina, and fixed to various bodies. The four valves of 
their operculum close the orifice exactly. 
The rocks, shells, &c., on the coast of Europe, are, in a man- 
ner, covered with a species of Balanus, the Lepas balanus, L., 
Chemn., VIII, xcvii, 826* * * § . Naturalists have separated from it 
The AcASTiE, Leach, whose base is irregular, convex towards the 
exterior, and which does not become fixed ; most of them are found 
in sponge f. 
The CoNi^, Blainv., the tube of which has but four salient pieces J, 
The Asem^, Ranzani, where the tube has no decidedly salient 
pieces §, 
The Pyrgom^, Savigny, whose tubular position, forming a strongly 
depressed cone, has but a very small orifice, almost like the shell of 
a Fissurella ||, 
The OcTHOsi^, Ranzani, which have but three salient pieces in the 
tube, and only two valves to the operculum^. 
The Creusi^, Leach, with four salient pieces, and two valves to 
the operculum **. 
M. de Lamarck, under the name of Coronul^, separates the very 
wide species, where the parietes of the cone are occupied, by cells so 
large, that they resemble chambers f|; and under that of 
TUBICINELL.E, those in which the tubular portion is elevated, 
narrower near the base, and divided into annuli, which mark its 
growth 
There are some species of these last two subgenera, which affix 
themselves to the skin of the Balaenae, and even penetrate into their 
blubber. 
To the preceding subgenera must be added the 
* Add, Lepas balano'ides, Chemn., VIII, xcvii, 821 — 825 ; — L. iinfinnabuluni. Ib, 
828 — 831 ; — L, minor, lb. 827; — L. porosa, Id., xcviii, 836 ; — L. verruca, Ib., 
840, 841 ; — L. angusta, Ib., 835 ; — L. elongata, Ib., 838; — L. patellaris, Ib., 839 ; 
— L. spinosa, Ib., 840 ; — L. violacea. Id., xcix, 842 ; — L. fulipa, Ascan. Icon., X ; — 
L. cylindrica, Gronov., Zooph., XIX, 3, 4 ; — L. cariosa, Pall. Nov. Act. Petrop., 
II, vi. 24, A, B. 
-f- Acosta Montugui. Leach, Edinb. Encyc., copied Blainv., Malac., Ixxxv, 3 ; — 
Lepas spongiles, Poli, I, vi, 5. 
J Conia radiata, Blainv., Malac., Ixxxv, 5. 
§ Lepas porosus, Gm., Chemn., VIII, xcviii, 836, 837, Encyc. Method., pl. 165, 
f. 9, 10. 
II Pyrgoma cancellafa, Leach, loc. cit., copied Blainv., Malac. Ixxxv, 5. 
^ Lepas Stroemii, Miill., Zool. Dan., Ill, xciv, 1 — 4. 
** Creusia spinulosa, Leach, loc. cit., copied Blainv., Malac., Ixxxv, 6. 
■fi' Lepas baleenaris, L., Chemn., VIII, xcix, 845, 846; — L. tcstudinarius, lb., 
847, 848, which attaches itself to the shell of Tortoises. 
The Tubicinella , Lam., Ann. du Mus., I, xxx, 1,2. 
