i 44 WORMS. MOLLUSC \. 52. Echinus. 
Tefillatus. With ro fpaces divided^ in the middle hy a future and teffe*' 
*0 ornns ; irmniii circular. 
Klei^ echinoti. ed. uesk p. i j t, tab, I I , G. 
Found hitherto only in a foifik Hate. 
Betryoide,. Spaces divided by a longitudinal future in the middle, the 
larger ones bifcrioiidy tuberculate; avenues with ^ 
double curved row of pores. 
K.eia echind. ed. Lesk. p i 54. tab. 1 1. H. 
Found asyet only in a foflile ftatc. 
Hemifphatrical, with 10 fpaces bifariouOy tuberculate, th® 
tubercles crenate and furrouuded by a circle of grantt'" 
lations ; the larger fpaces with 4 longitudinal groove®/ 
the leifer ones with 2. 
dC/ein echtnod. ed, Lesk. tab. 10, D, E. tab. 44. 2. 
Inhabits— — Cinereous blueilh or greenifh, the bafe and avenut® 
yelloivilh ; avemes biporous, the pores placed in a thichif 
ferrate line; ba{e pulvinate : mouth Imall ; ‘vent furroundt<^ 
with 10 fcalcs. 
b. Something refemhlng the figure of a Jhield. 
*SinuatM. Convex; avenues 10 flriate; fpaces 10: tubercles furrouncTct*' 
• with a circle of granulations. Polar font- 
Plot. Oxfordjh.p. 91, 92. tab. 2. fig. 9, lo- 
Klein echinod.ed. Lesk. p. 157. tab. 12. 
Lilier Ifp eochl. p. 224. 
Lu d. litboph. Brit. f. 48. n. 97 1 . 
Morton Northamptonfh. p. 23 t. a. r. 
Found hitherto only in a ioffile ftate. 
One /pare! divided by an excavated finus ; ai'inucs broaj 
and punflured at each margin : bafe a little excavated acd 
furrowed by j diveigent grooves; mouth fmall pentagonal. 
Semiglobo- Hemifphd;rical, grooved, with a flat bafe: the protuberan- 
ces placed in rows. 
Klein echiaod- ed. Lesk p, 138, too. i^tg.fiff. I. 
Lang. lap. tjg.p. 119. tab. 3;^. 
Volkm. Sil.Jabt. t.p. 179. tab. ^O, fig. 5. 
Bourg. petrtf tab 52. 342. 
Found hitherto in a toffi.e ftate only. 
i^iiissjued Painted with innumerable annulations, with a hollow h' 
lahiatus, the middle furrounding a 5-raved conve.x flar. 
Klein, tehinod, ed, Lesk. p, 1 59. tab, ^i.fig, 3, 
