WORMS. MOLLUSCA. 52. Echinus. £57 
Inhabits Indian Atlantic and European Seas. 
Stel] witn a purplish top: /paces tuberculate in waved rows; the 
lower tide dtudded and divided by 2 ímooth {paces : /pines 
fhort thick mixed with long ones, 
c. Heart-oaped; the crown not grooved, 
Raaiatus. Avenues 4; with impreffed ftrize porous on each fide: crowa 
with 4 pores: fpaces 10, divided by a ferrate future im 
the middle and arched tranfverfe futures. 
Kkin. echin. ed. Lefe. p. 234. tab. 25. 
Walch Monum. dili. p. 182, tab. E, iy. n. 1, 2. 
Found hitherto on!y in a foiile ftate. 
Bafe flat: mouth a little kidney-fhaped and furrounded with a 
fubpentagonal itar of pores: vent roundifh, with 3 angles on 
she margin: avenues conlifting of a row of pores placed clofe 
together in pairs, each conyergent on the crown. 
Purpureus. Avenues 4, petal-fhaped, lanceolate: larger tubercles placed 
in a zig-zag manner: fpines acicular incurved white. 
Kern echinod. ed. Leske. tab. 43. fe, 3—5- t. 45. f. 5+ 
Mull. Zool. Dan. 1. p. 17. n. 4, tab. 6, — 
Argenville Conch, p. 311. tab. 25. fig. 3. 
Hill's. Animals. tab. v1, Scil Corp. shar. tab. Y1. fig. 1. 
Ighabits North Seas: above convex; the fides floping; fore- 
part with 2 projections, Lind-part truncate: beneath flat; 
from the mouth to the vent a little convex and purple: very 
finely granulate and befet with fmall fubclavate briflles, and 
{patulate {pines feated on white tubercles: near the vent a 
kidney-fhaped ftripe of minute white granulations and íur- 
rounded with numerous white tubercles, 
Pufillus. | Oval with 5 avenues: vent remote. 
Mull. Zool. Dan. 3: p. 17. tab. 91. fig. 1—44 
Inhabits the North Seas; very minute and diftin& from Ech, 
lacunofus; probably not of this divifion, 
Complance A little flattened each fide: fpaces and avenues ro, 2 of thera 
fus. placed in the furrows of the back. 
Klein echinod. ed. Lesk, p. 238. tab. 51: fig. 1, 23 
Lang. lap. fig. tab. 35. fig, 1, 2. 
Scheuz. lith. Helv. p. 61. fig, 84, 
| Scheux. ory£tol. p. 318. fig. 135. 
Breyn, echin. p. 63. tab. 6. fig. 1, 2. 
Bourg. petrif. f. 76. tab. 51. fig. 330s 333» 354- 
Found in a foffile ftate : roundifh. 
* Sube 
