WORMS. MOLLUSCA. 52. Echinus. I 39 
SW/ greenifli-alh a little inclining to chefnut, and pulyinate at 
the bafe ; /paces with 4 tubercles placed in a rhombic form : 
pores of the avemies curved, in 4 or 5 pairs. 
^'S/ariut, Ovate ; the larger fpaces bifarioufly tuberculatc. 
Pht. Oxfordjk. p. 108 Sab. 5, )%•. 6. 
Laid, lithopi, p. 46. n. 934 — 94 Q- 9 . M- 940 - 
hourz Petrif. p. 76. n, 340. tab. 52, /g. 240 . 343. 340. 
Found in a petrified ftatc in England and Nocmandj,. 
Hemifphxrical, deprelTcd, with 5 avenues longitudinally 
tuberculatc ; the fpaccs lanceolate. 
Klein ed. kjk.tah. yj.fig. 1. 2. tab 31. ^ *• 
Barbut, tab. \i,fig. 3- i.fig, 3 - 
Rump/. Mu/, p. 35. tab. 13, n. 3. tab. 14. f. B. 
2. With tuberculatc bands. Pbeh. Zce^egtl. p. 29, «. 
3. Greenifh-ycllow. Seba Mu/, 3. tab. tl,fg. 10, 
4. Blackifli, variolous, with long fpines, 
Seba Mu/. 3. tab. 1 3, /f. S. 
5. Klein, echinod. ed. lesk. tab, 46, 
iS. Spines black annulate with white. 
Klein echinod. ed. lesk p. 101. 
Inhabits fands of the /W/ViB OfM», 
Shell orbicular, with a depreffed top, tich blue or grey-blue . 
mouth large : vent circular and furrounoed with a pentangular 
flcin : fpaces bifarioutty tuberculatc, the tubercles perforated at 
the tip ; awnues with 3 pair of pores at the bafe and 1 at the 
tip; /pines violet and blue-grey. 
Sphxroid, depreffed: avenues 5, with black porous m^argms. 
granulate in the middle with a double row of larger 
prominent dots. 
Pall Spieil.Ztol. to p. 31. tab. %, fig. 4— 7 > 
KUin echinod. ed lesk. p. 1 1 3. tab. 43. //f. 1—4* 
Inhabits the Seo; grcenilh-white. 
LelTer tubereUt with green very brittle briftles: fptnet refembling 
the Hem of the Equifetum, whitifti annulate with green and 
grey at the tip. 
Orbicular, grey, with purple-grey fpines thicker in the 
‘ middle- , ^ e 
Inhabits American Seas. Seba Muf. 5, tab. 1 5, pg, 0. 
With the lower fpines capillary. 
Inhabits American Seas. Seba Muf, 3, tab, 1 3, ftg, 7 * 
Sa 
Radiatus. 
