146 WORMS. MOLLUSCA. 5?. Echinus. 
*Vulganst Orbicular; with 10 avenues, % of them always near 
other 
Morton Northbampt. p *35, «. 2. tab. 10 , Jig. II. 
Liji. lap cochl. p. fig. 18. 
Laid. lith. brit. p. 46. n 944--950- 
Klein echtnod. Usk. tub. e-.— k. t. f.i k, 
IValch dilu’u. t. E. \.f. I, 2. i. /. 2. t. 9. d. f. 2. g./, I.' 
Aldro<v, MuJ. p. f 3—6. 
Olear Mu/. Gottorp. t.zi, /’. 5, 6, 
Scolopendritps. Ovum anguinum. Btjl. ge». cent, tab, 19* 
Buffonites, MuJ.Calceol.p. m. 
Rumpj. Ambtin. tab. fig. 6—9. 
Mercat. metall. p. 246, fig. 1 — 4, 
MelJ. ech. Wagr. p. 7, taO. l,fig. 3, 4. 
Myll. mentor. Saxon, p. 45—47. /.g. 2, 4, 5, g, lo. 
V elkm.fikf. Jiibterr. 1 79. lab. yi,Jig. 6, E. 
Heln». lithogr, angerb. 7 1 . tab. 8, fig. 1 3. 
Breyn. echin. p, 57. tab. 2. fig. 3, 4. 
Bytem. bibUoih. app. tab. z^, fig. 270. 
Found frequently in a folTile Hate, in numberlefa varieties of 
With 4 avenues of pores. 
Kietn echtnod. edlesk. p. lyo.tah, if]. Jig, 3 — 5. 
Gehler charabi . foJfiL extran. p. 13, pg. i, 
WaUb dtUcv. tab, 9, d. fig. 3, g. fig. 7—9. 
Found in a foffile Hate: circumference fometimes orbicul**^’ 
fometimes approaching to an oval. 
With 6 avenues of pores. 
Klein echtnod. ed. letk. p. 1 70. tab. 50, fig, t , 2. 
Gehler charab}. fojfil- ext. p 13, fig, 2. 
Walih diluv, monum. fuppl. tab. 9, g. fg. 4—6, 
Found hitherto only in a foffile ftate. 
b. Tfhe baje exaSlly circular'. 
Sabuculus, Avenues 10, biporous; fpaces lo, 5 larger and 5 
mouth and vent fmall, orbicular. 
1 . Klein echtnod. ed. letk. tab. 1 4, fjg, 1, m*- 
2. Klein echinod. ed letk. tab, 14, f n, o. .[ 
Found only in a foffile ftate : the fpaces belet with very 
circles: pores of the avenues very minute and crowded cl** 
together. 
^adri^ 
fajiatut. 
Sexfafaa- 
tvs. 
c. The hafe oval. 
i 
CjcloJomut. Oblong, fubdeprefTed : crown with 5 pores: mouth 
in the middle and round: vent oblong and near 
mouth. , 
