WORMS. MOLLUSCA. 52. Echinus. 151 



Seba Muf. 3. tab. 15, fig. 7 , 8. 



Di//V. nat.fel \.p. 93 /«£. D. l,Jig. 17. 



Inhabits the Indian, American and «SW£ /<?<3f, and very much 

 refembies the lai't: cinereous: crown umbilicate : h&fe a little 

 hollowed, darker and marked with frondoie lines. 



Subpentagonal, with ovate avenues : vent oval, more re- 

 mote from the mouth, with 6 foramina clofe to the 

 margin. 



Klein eckinod ed, lesk. p. 200. tab 50, fig, 5, 6« 



Inhabits the ifland Eowbon-, greenifh-brown. 



Shell a llightly heart ihapec oval, a little pulvinate, finuous, 4 

 inches and 6 lines in tranfverfe diameter, crown patulous, 

 bafe a little flatter, and marked witji flexuous branched fcu1p r ' 

 tured lines. 



Margin waved, the lower-one rounded, the upper-one 



nearly fquare and twice divided, with an opening pore 



between every 2 of the avenues. 

 Seba Muf, 3. tab, 15. Jig. 1, 2. 

 Inhabits Perfian feas; yellowihh-grey, the upper margin tawny » 



the bafe flat, punctured and marked with radiate itriae ; went 



oblong and placed near the mouth. 



Subeordate and affiliate, the pieces hexagonal : avenues 5. 

 oval, emarginate at the tip, the fifth longer, and a pore 

 between every two of them. 

 Rumpf. Amb. p. 37. tab. 14, F. 



2. Seba Muf. 3. tab. 1 5, Jig. 3, 4: 



Inhabits Amboina, in the river Wagnitoe ; 5 — 6 inches high and 

 as many broad j the broader end thrice divided j thm anc| 

 thickly covered with granulations ipinous at the bafe; above 

 reddrfh-afh, beneath violet-red, 



fetraporus.) Orbicular, lightly finuous, and perforated each fide with 4. 

 foramina : vent circular. 

 Seba Muf. 3. tab. i5„fig. 5»6. 



Inhabits — : pale yellow-grey,: crown with 5 foramina t 



avenues obtufe at the tip: the baje furrowed with 10 flexuous 

 grooves bifid at the tips : mouth rounded and 5 -toothed. 



\\ 



ft With a Jinu ate margin and entire JurJ ace, 



*Laganum t Avenues oval, finely ftriafe and cleft at the tip : crpwpf 

 prominent: vent circular and near tne margin. 

 Klein echin. id* lesk. p. 204. tc 2^ jig. a, b, c» 

 Rumpf. Amb.p, 36. tab, 14. . & 



