142 WORMS. MOLLUSCA. 52. Echinus. 
*Coromalis. Hemifphzrical orbicular, with ro {paces alternately nar- 
rower and covered with fcattered papillz : avenues flat, 
meting in confluent pairs before the area of the crown. 
Morton Northampt. p. 234. tab, 19. fige 10, 
Luyd. lithoph. Brit. x. 979—981. 
Left. ed. klein. p. 136. tab. 8. A, B, 
Lang. lap. fig. 5. 122. tab. 31. 
Bourg. petrif. tab. $1. fig. 334, 355. 
. Plot $taffordfh. p. 178—198. tab. 13. fig. 21. 
Left. ed. klein, echin. p. 138. tab. 8, C. 
Hook's Works. 5. 284. tab. 2. fig. 2, 3. 
Lifer lap. cocb. p- 120. tit, et fig. 19. 
Lluid. litb. Brit. p. 46. fig. 942, 943» 
Jang. lap: fig. p. 124. tab. 35. 7 
Falext. Maf. 2. tab. 5. fi. 8. 
Bourguet petrif. p. 70, tab. $2. fig. 345» 346. 
Sebeucbz. oryétogr. p. 317. fig. 134. 
Scheuchz. phys. facr. tab. 50. fig. 65. 
Baier oryfegr. noric. tab. 3. fig. 36. 
3. Klein. ecbinod. ed. Left. b: 140. tab, 45. fig. 2. 
Rumpf. Amb. p. 337. tab. $9. fig. E. 
. Lien. echin. ed. Leffe. 141. tab, 8. fig. D, E. 
Inhabits various parts of the world, and as yet has only been 
found in a fofüle flate, in a chalky and flinty foil. 
tQ 
A- 
Ajlerizans. Orbiculat depreffed; tubercles furrowed with a groove up 
ESI to the tip and furrouned with a circle of granulations, 
Klein. ecbinod. ed. Lesk. tab. 8. V. tab. 46. fige 5, 
Found among chalk in a fofhle ftate: 
Afilatus. Shell fcutellate, the fcutels united by tranfverfe futures. 
Klein. ecbinod. p. 15. $ 26. 
2. Teffellate. Klein echinod p. 16. § 27. 
Inhabits——— probably not a diftin& fpecies. 
Serdicus, Orbicular depreffed tuberculate, with ro impreffed avenues : 
the fpaces multifarioufly tubercled, with an imprefled 
future down the middle, 
Klein. ed. Leshe. tab, 9. A, B. tab. 54. fig. 4--6, 
Plane. comm. Bononsi. p. 230. sab. 1. fig» 45 5» 
Bonan. recr. 9. p. 92, fig. 19. : 
Scill. corp. mar. tab. 13. fig» 1« t« 36. D. 
Inhabits the Tu/ean and ddriatic Seas; large, grey-yellowith-red, 
the bafe nearly flat and more yellow: larger /paces with tue 
hercles difpofed in 8--12 rows, with lefler ones and {mall 
granulations in the interftices ; the lcffer {paces with 4--6 rows 
of {maller tubercles ; avenues with § pair of pores placed in an 
arched row: mouth {mall with 10 finuoiities. 
Flarmeus, 
