J46 WORMS. MOLLUSCA. 52. Echinus. 



*yvlgaris* Orbicuar; with 10 avenues, 2 of them always near earii 

 other 

 Morton Nortbbampt. p 235. a. 2. tab. 10, jig. 11. 

 Lijt. lap cocbl. p. 2iy'jig. 18. 

 Luid. litb. hnt. p. 46. n 944-950- 

 Klein ecbinod. lesk. tab. \^jig> e— k. /. 14, j. a — k. 

 Walch dilwv. t. E. i.j. 1,2. a. /. 2* /. 9. d. /*. 2. g./« 1; 

 Aldrov. MuJ. p. 455, y 3--6. 

 O/pflr M*/". Qottorp. t. 21, j. 5, 6. 



Scolcpendrites. Ovum anguinum. ife/?. ££«. cont* tab. iq, ; 

 Buffonites. M«/! Calceol. />. 353. 

 Rumpj. Amboin. tab. \, jig. 6- — 9. 

 Mercat. metall. p. 246. y?£. 1 — 4. 

 Mf//. «■£. Wagr. p. 7, /£0. !,//£. 3, 4. 

 My//, memor. Saxon. />» 45 — 47. ^. 2, 4, 5, 9, 10, 

 Volkm.jilej.fubterr. p.iyq. tab. ^o,Jg. 6, E. 

 Hel<w. lithogr. angerb. p. 71. /«^. 8, yzg. 13. 

 Breyn, ecbin. p* 57. ta£. 2,^. 3, 4. 

 Bytem. bibliotb. app. tab. 2^ fig. 270. 

 Found frequently in a foflile ftatc, in numberlefs varieties of form, 



Quadri- With 4 avenues of pores. 

 jajciatut. Klein ecbinod. edlesk. p. 170. tab* 47, jig* 3 — 5, 



Gebler characl. J'oJfiL extran. p 13, /;£. 1 . 



Walcb dilwv. tab, 9, d. Jig. 3, g. jig. 7—9. 



Found in a foflile ltate : circumference fometimes orbicular, 

 fometimcs approaching to an oval, 



Sexfafcia- With 6 avenues of pores. 

 tus* Klein ecbinods ed. lesk. p. 1 70. tab. 50, jig* 1,2. 



Gebler cbaraft. jojfil. ext.p 13, _//§-. 2, 

 Walcb dilwv. monum* Juppl. tab. 9, g. jig. 4—6. 

 Found hitherto only in a foflile ftate, 



b. The baje exactly circular,. 



Suhtculus. Avenues 10, biporous; fpaces 10, 5 larger and 5 lefs: 

 mouth and vent fmall, orbicular. 



t* Klein ecbinod. ed. lesk. tab, 14, jig. 1, m»- 



2. Klein ecbinod. ed Usk. tab. 14, f. n, O. 



Found only in a foflile date : the fpaces befet with very fmall 

 circles : pores of the avenues very minute and crowded clofe 

 together. 



c. The baje oval. 



Cychptnas* Oblong, fubdeprefTed : crown with 5 pores : mouth placed 



in the middle and round : vent oblong and near the 



mouth. 



Klein 



