f$CJ 
O’valis 
Pniforinis 
Lapifcancri 
P atillaris 
WORMS. MOLLUSCA. 52. Echinus. 
Affuiate, oval; with 10 avenues and fpaces, the latter 
yjded by a ferrate future in the middle. 
Klein, echin. ed, Lesk.p. 253. tab. 41- fig. r, 
Annan. Aa. Udna. p. 275. tab. l^.'jig. 1—3. 
V/alchdiluv- Monum. z. p. 182. tab. E, iii fig. 6, 
Pound hitherto only in a folSIe ftate, and is probably not of 
divifion. 
Ovate, and gibbous at one end; the bafe flat: avenues 5 ’ 
fomewhat petal-lbaped and obfoletely porous. 
Uc,„ echin. ed. Usk. p. 23;. tab. ^^.fig. 7. ...y- . g, 
I ound hitherto m a tolliie ftate only. 
^/^«/^and round, the former iomething heart-lhaped 
gular and 5-lipped. ^ 
Obtufely oval, convex: crown excentric and perforate^ 
with 4 poies : avenues 5, biporous, ovate-lanceolate 
and cleft at the tip. 
Klein echinad. ed. lesk. p. 236. tab. fig. 10, ii 
Found as yet only in a foffile ftate. 
placed above the broader margin of 
the fhell, mouth at the narrower end acd nearer the bafe : 
wirh excavated, naked in the middle, elfewhere covero* 
with 3 circle of tubercles difpofed in rows 
Very much deprelTed; with avenues refembling a flar. 
Klein, echmd. ed. leske, p. 256. tab. ;^,fig. 5—7. ^ 
Found only in a foffile ftate: circumference ovate; back a lit* 
orbicular^^^ liightly excavated; fidcs granulate: 
ORDIiJ^ 
