I4P WORMS. MOLLUSCA. 5*. Echinus, 



Radiatus. With 5 radiate avenues, forked at the tip. 

 Lesk. ap. Klein, echin. p. 116, tab. 44, fig. 1. 

 Seba Muf. 3, tab. 14, fig- 1, 2. 



Inhabits . Each of the a<vems is terminated by 2 whitifh 



jays, and perforated with pale red foramina, 



Circinatus. With 10 granulate fpaces, bjfarioufly tuberculate; the 

 larger ones excavated, the letter ones elevated, and 

 fubpulvinate at the bafe. 



Klein echin. ed. leske, p. 919, tab. 45, fig* 10. 



Scill. corp. mar. tab. 25, f. \? 



Found hitherto only in a foifile ftatc. 



Cidaris* Jlemifphxrical, depreflfed, with 5 fiexuous linear avenues. 

 the fpaces alternately bifarious. 

 Klein echin. ed. lesL p. 1 25. tab. 7. Barbut f tab. 1 1 , f % 4. 



I. Klein le>k. tab, 7, A. tab. 39, f. 1, 2. ra^. $\ } f h, 1,2. 

 6V>« ilf«y: 3. ^. 30, /*£. 13, fig, 11, 12. 

 ZW/V Nat. f el. tab D, ftg. 2. 

 Pbef. Zee-egel p. 29, /«^. 3* fg- to. 



i. Lefs. Klein+ed.lesk. p.\iy. tab t j % 

 JRumpf. 4/nb.p. 33, /*£. l^, #£. 3, 4. 

 6Vta Muf. 3. f*£". 3. Argew. Conch, tab. 2C. Ij. 

 DfAf. nat. jel. tab. D. \u.fig. 5. 



$. Spines fufiform. fota Muf. 3. f«£. 13, /#•$♦ 

 AT/fz/z ed. lesk. tab. 41 . ftg. 4. /a£. 7. D, E. 

 Scill. corp. mar. tab- 22. ftg. 1 — 3. 

 Bonann. Muf. p. 92. _/?£. 17, 18. 

 G/W/. /*/?. /*£. 108. ftg. D, E. PtXim* Amb. tab, 7,/. 2, 



4. S; ines claviculate. De luc. Naturf. 8. tab. 8. 

 Kiein. cd. lesk. p. 134. tab. 46. ftg. 2, 3. 

 .£«»£. Lap. fg. tab. 36. the middle figure. 



5. Spines obtule. AiW/. Z00L Dan. frodr, 2848, 



6. Echini Siamenfes. Rumpf. Amb. p. 34. 



Inhabits the Ocean, generally of a livid-grey colour and flat at; 

 the bafe: fpaces granulate; with 2 rows of protuberance? 

 placed alternately, furnilhcd with perforated papilla?, fur- 

 rounded with a circle or two of granulations, and feparated by 

 a groove running round them; in the place of lefler ones is 

 an eminent band between the avenues; mouth rather large. 



hi 



Mamillatus Hemifphserical, oval, with 10 winding avenues ; the fpacef 

 muricate and warty, the narrower ones abbreviated. 

 Klein echinccU ed. lesk. tab. 6. 34, 39. fig. 1. 

 &nmpf. Ardop. 32* tab* 13, fig. !, 2? 



$44 



