Hi WORMS. MOLLUSCA. 52. Echinus, 



Plot.Oxfrd/h.pgi. §53 fig.it. 



Gualt, tejl. 1 1 o, fig* C, C. Socc. obf. p, 296. fa. 2. 



Stba Muf. 3. tab. 1 s - , fig. 25, 26. * 



Inhabits , Granular-, ochraceou% ov*te, fubpentagona!< 



t e bafe with 5 excavated rays divided into (o many equal 

 fpa es -.mouth obtufdy pent igonal . vent hardly the breadth of 

 a line diftart frt>m the margin: cr 0wa perforated with 5 fora- 

 mina between the avenues. 



Subrotundus Orbicular, with radiate avenues. 



Klein Echin. ed, lesk p. 206. tab. 47, fa- 7, 

 Set//, co> p. mar. tab, 8, Jig. 1 — 3. 

 Andrea Br a. d, Sch-iv. tab. 5, fig. g, 

 Valent. Muf tab, 3, /^. 7. b. 

 Found hi.herto only in a foflile flate. 



Rttlcula. Ovate, flattifh, with 5 oval avenues: the furface reticulates j 

 ius' Klein Ecb. ed. lesk. p. 2O7. tab. 45, f% 8, 9. 



Barbut, tab. 1 1, fig. (0 . Gualt. Te£ t. 1 IO, /. D. 

 Rumpf Amb. tab 14, fig. C. 

 &*« Muf 3. /«£. 15, %. 23, 24, 35, 36, 38. 

 Inhabits American and Indian Ocean. 



Orbicularis Circular, with oval acute avenues: the bafe with 10 im- j 

 pretfed porous rays: vent mid-way between the mouth 

 and margin, both circular 



Klein Echin, ed le h. p. 208. tab. 45, Jig. 6, 7. 



Gualt. Tejl. tab, I 10, /%\ B. Breyn. ech. tab. ? 9 figi I, 2, 



Bocc. ohf p. 269. Fig. 2, 3. 



Lang, lap Jig. p. 122. ta£. 35. the laft figure. 



Inhabits the Indian Sea, 



Qorrallatus Orbicular, with oval obtufe fhort avenues. 

 Klein ed. Miff" p- 209, tab. 40, fig. 4. 

 IValcb dilu<v,*nonum. 2. p. 180. tab. E, ii.y*« 8. 

 Found hitherto only in a foflile flate. 



ttf ^7/A the margin toothed. 



Decadacty- Shell perforated With 4 oblong foramina ; the margin with' 

 10 teeth. 



Klein echin. edi lesk. p. 209. tab, 22,/. A, B. 



Gualt. Tejl. tab. Ho, fig. H. 



&£« M*y; 3, ^, 15, /£ 17 > iS. 



Inhabits — • 6^// rough with granulations ; above blueinV 



green varied with cinereous; the avenues and iutures pale 

 fiefh-colour; the bafe yellowifh flelh colour, with 10 impref- 

 fed flexuous grooves, bifid at the tip and green ifh-afh : a<ve* 

 nues lanceolate-oval, entire, biporous, united by oblique fbiae: 

 teeth of the margin alternately fhorter; mouth rounded: i>eni 

 ovate, Ocloi 





Qi* 



