PEDICELLATA. 397 
GALERITES, Lam.—Conu.us, AL, 
Have a flat base, from which their body rises in a cone or semi- 
ellipsoid. The mouth is in the middle of the base, and the anus 
near its margin. 
They are very common in the stony strata, but no living ones are 
known. 
The most common species is the Ech. vulgaris, L.; Encyc., 
153, 6, 7; Klein, Fr. edit., VII, D. G.* 
The number of bands in some is not quinaryt. 
Scure.ia, Lam., 
Where the anus is between the mouth and the margin, the shell ex- 
tremely depressed, flat underneath, and approaching to an orbicular 
form. 
In some the shell is entire without any other openings than the 
series of pores visible in all the Echinif. 
The shell is also without large orifices in others, but is bi-emar- 
ginated §. 7 
In some again itis entire and traversed by large holes which do 
not penetrate into its cavity |]. 
In others it is both traversed by these large holes, and emargi- 
nated ¥. 
Finally, in the Rorvna, K]., part of the posterior margin is fes- 
tooned like adentated wheel; the Rotule are also divided into those 
which are traversed by large holes**, and those in which they are 
wanting ff. 
CassipuLus, Lam. 
The Cassiduli are oval, with the anus situated above the margin as 
in the Nucleolites, but are distinguished by their incomplete bands of 
pores, that is, they do not extend from one pole to the other in the 
figure of a star}. 
In other irregular Echini the mouth is notin the centre of their 
base, but on one side, opening transversely and placed obliquely; the 
anus is on the opposite side. They are also subdivided according to the 
extent of the ranges of holes. 
* Add Ech. albo-galerus, L.; Bourg., Petrif., LIII, 361; Encyc., 152, 5,6. 
+ Ech. quadrifasciatus, Waleh., Monum., Dil. Supplem., IX, d, 3, and IX, g, 7— 
9; Encye., 153, f. 10, 11 ;—Ach. sexfasciatus, Walch., Supplem., LX, g, 4, 6; Encyc., 
153, f. 12 and 13. 
t Ech., Encye. 146, 4, 5. 
§ Echinus auritus, Seb., III, xv, 1, 2; Eneye., 151, 5, 6;—Ech. inauritus, Seb., 
III, xv, 3, 4; Encyc., 152, 1, 2. 
|| Echinus hexaporus, Seb., III, xv, 7, 8; Encyc., 149, 1, 2;—Ech. pentaporus, 
Kl., Fr. Ed., XI, C; Encye., 149, 3, 4;—Ech. biforis, Encyc., 149, 7, 8;—Ech. 
emarginatus, Encyc., 150, 1, 2. 
{| Ech. tetraporus, Seb., XV, 5, 6; Encyc. 148. 
** Ech. decadactylus, Kncye., 150, 5—6;—Ech. octodactylus, Ib., 3, 4. 
++ Ech. orbiculus, Encyc., 151, 1—4. 
tt Cassidulus caribeorum, Lam., Encye., 143, 8, 10;—ch. lapis cancri, K1., 
XLIX, 10, 11; Encyc., 143, 6, 7;—£ch. patellaris, K1., LIII, 5, 6, 7. 
