145 -WORMS. MOLLUSCA. 52. Echinus, 



2 Klein echin, ed. ksk. tab 42, fig, 5. 



Wakh diluru, monum. 2. p. 179, tab, E, i. z e f 5, 

 Aldrev. Muf. met. p. 455, //£. 3. 

 Bytem. biblioth. app. tab, 23, /g. 270* 



3« -/£/*/« echin, ed. lesk. ic, tit, and tab, 8,f G. 



Walch dilwu. monum 2 /. 177. /#£. E. z.f 3, 



Found hitherto only in a foffile ftate. 



Shell compofed of 20 rows of pieces, 10 larger and 10 left, all of 

 them united by a ferrate future: /paces 10 larger and 10 

 fmaller, in the latter of which are 2 imprefTcd dots : mouth 

 rounded, fmall : vent fuboval, 



*Puftulofus, Spaces obfolete and hot tuberculate : avenues with raifed 

 dots difp^fed in pairs: crown impreifed. 

 Plot. Ox for dpi. § 36. tab. 2. fig. 14. 

 Laid hth. Brit. p. 47, n. 954, 

 Lift, lap. cochhp, 225 fig Z9--31. 

 Klein, echinod. ea[. lesk p. 1 80. tab. 16, A, B. 

 Morton Northampt. p. 335. tab. 10, fig, 12. 

 Hook's Works, p. 284, tab. 3. fig. 7. 

 Heliv. lith An^erb.p.^o. tab.%, fig. 12, 

 Mell.ech.^wagr. tab. \-fg- 7, 8. 

 Kundm. rar, nat. et art. p. 95. tab. 5. fig* 8, 9. 

 found in a foffile (late : rcfembles Ech. fcutatua in figure, cifi 

 cumference, mouth and vent. 



Quadri- Wiih 4 double rows of dots. 

 radiatus* Klein echinod, ed. lesk p, 182. tab, 54, f, i. 

 Mell de cap. fig. Lubec. p. 28. /. 2,f 7. 

 Found hitherto in a foffile ftate only. 



Elinor* Ovate, with a flat or concave bafe : fpaces and avenues io 9 

 the latter biporous : mouth tranlverfe, roundlfh; vent 

 fuboval- 



1. Papillous. }Ckin ed, lesk, tab, 16, C, Do 



2. Waved. Kiein ed. lesk. tab. 17. a, b. 

 Brejn. ecbin. p. 58. tab, 3, f, 3, 4, 



3. Smooth. Klein echin. ed, ksk. tab. 17, C, d» 

 Volkm. tiles- jubt, tab. 30. fg, 7. 



found in a foiT;le ftate. 



Duhuti Ovate, with 10 (imply porous avenues: half of the vent 

 marginal. 

 Klein echinod. ed. k'k, p. 184. tab. 44./". 5* 

 Found hitherto only in a foffile flats. 

 The e hrgcr Jpaces marked with irrjpreiTed circles. 



