WORMS. MOLLUSCA, «; 2, Echinus. 



lil 



Seba Muf. 5. tab. 10, fig. 1 7* Barbut, tab. 1 1 ,/. 5, 

 ^r^'«. echin. t. 1,/. 5. CW^. teft.t, Jo8,B, Q. 

 Argenv. Lonch, p. 310, f. 25, /. A, 



2. P/^//I Zee-egel. p. 30, » ,7. 



3. &£* Muf. 3* r. 13,/. It 2 ? . - 



4. &£a Afa/1 3. /. 13./. 3. 



5. SebaMuf. 3. / 13,/. 4. 



ZV. M*. 1, jti B./. 3* *• V. m.f. 7, 8. 



Inhabits Southern Seas ; deprefled, of a ydlow-tfli colour inch** 

 ing to brown, beneath paler. 



Spaces 10, the paprlae not perforated as in the la#, but lur- 

 rounded with elevated circles $ in the larger fface< are about 

 16—18 protuberances, the middle ones larger, in the lefier 

 {paces about 14: avenues with 4 — 5 pair of pores at thebafe: 

 mouth large: vent rounded and furrounded with 10 fcales,-5 

 of which are perforated : colour of the /pines variable. 



Hemifphasrical, oval, with 10 flexuous avenues 5 fpaeeu 

 muricate, the narrower ones longitudinal. 

 Klein echinod '. ed % lesk. t. 4. C, "D. 

 Seba Muf. 3. t, 10,/ 6, i6. t. il, .fi ill 

 Breyn. echin. /, I ,/. 6 Gualt, te/i. t. IQJ,/ C« 

 Delic. nat./eL 1. p. 89. t. D. 1 /. 8. 



2. Suborbicular. Klein lesk. t. 4, /. E, F, 



Inhabits the Indian Ocean, and varies much in colour; fometimfB 



yellow-cinereous, fometimes blueiih ox biackifh : the bafc 



pulvinate. 

 houth large: in each /pace is a double row of larger warts, and a 



fextuple row of fmall ones in the larger Ipaces, which in the 



leffer is quintuple: avenues with 4 — 5 pair of pores towards 



the ends, and 6 in the middle. 



Hemifphjsripal-oyal and {lightly deprefled; with very fhort 

 obtufe truncate fpines, the marginal onps clavate and 

 deprefled. 



Klein ed. Us\.t. 47»/. l» 2. t. 44,/. 5. 



Barluts Worms, t. I U / 6. 



rArgenville Concb% I. />• 310, t. 25, /. F, G. 



Inhabits Indian Seas. Circumference nearly orbicular, cinereous, 

 inclining to violet: /paces 10, very finely granulate, with 

 fometimes an o£tuple row of larger protuberances in the larger 

 ones, difpoled in a quincunx, and a double row in the Iefler 

 ones : avenues brown, excavated, granulate, broad, with 4 

 rows of pores : /pines violet, fome of them clavate, feme an», 

 |ular at the tip, and fome cylindrical. 



*Corpnalis<i 



