.WORMS. MOLLUSCA. 52. Echinus. 19^ 
Seba Muf 3. tab. 15, fig. 7, 8. 
Delic. nat. fel. X. p. 93. tab. D. icfig. 17. 
Inhabits the Indian, American and South feas, and very much 
refembles the lait: cinereous: crown umbilicate: aye a little 
heljdwse, darker and marked with frondofe lines. 
Emargra- Subpentagonal, with ovate avenues: vent oval, more re- 
fuss mote from the mouth, with 6 foramina clofe to the 
margin. 
Klein echinod. ed. lest. p. 200. tab £0, fig. 5,6. 
Inhabits the ifland Bourbon; greenifh-brown. 
Shell a flightly heart fhaped oval, a little pulvinate, finuous, 4 
inches and 6 lines in traníverfe diameter, crown patulous, 
bafe a little flatter, and marked with flexuous branched {culp- 
tured lines. 
Auritus, Margin waved, the lower-one rounded, the upper-one 
nearly quare and twice divided, with an opening pore 
between every 2 of the avenues. 
Seba Muf. 3. tab. 15. fig. 1, 2. 
Inhabits Perfian íeas; yellowifh-grey, the upper margin tawny :. 
the bafe flat, punctured and marked with radiate itriz: vere 
oblong and placed near the mouth. 
Jneuritus, Subeordate and affulate, the pieccs hexagonal: avenues 5, 
oval, emarginate at the tip, the fitth longer, anda pore 
berorcn every two of them. 
Rumpf. Amb. p. 37. tab. 14, F. 
2. Seba Muf. 3. tab. 18, fig. 35 4. 
Inhabits /455o2a, in the river Wagnitoe; $—6 inches high and 
as many broad; the broader end thrice divided; thin and 
thickly covered with granulations ipinous at the bafe; above 
reddifh-afh, beneath violet-red, 
Tetraporuse’ Orbicular, lightly findious: and peiforated each fide with 4 
foramina; vent circular. 
Seba Muf. 3. tab. i5, fig 5,6. 
Inhabits : pale yellow-grey : erewm with $ foramina: 
avenues obtufe at the tip: the duje furrowed with 10 flexuous 
grooves bifid at the tips: mouth rounded and 5-toothed. 
tt With a finuate margin and entire furface. 
! *Lecanunt, Avenues oval, finely itriate and cleft at the tip: crown 
prominent: vent eS and near the margin. 
Klein echin. ed. lesk. p. 204» tabs 22, Jig as Dy C. 
Rumpf. Amb. 5. 36. 1a5. 145 fx. E. 
Piet, 
