20G SCALARIAD^. 



We have no note of the uuinnil of this species. Its 

 tongue is described by Loven, who states that there are 

 no axile teeth, but uuguicular, somewhat broad, anteriorly 

 produced, simple uncini. 



It is a rare species, chiefly southern and western, 

 though occurring off Whitburn (Alder) ; and Scarborough 

 (Bean). It has been taken at Exmouth (Clark) ; Tenby 

 (Jeifreys) ; Burrow Island and Laugherne (Barlee). Clyde 

 province (E.F.). In Ireland it has occurred in a few loca- 

 lities, from Youghal (R. Ball) to the County Down north- 

 wards, on the eastern line of coast ( W. Thompson) ; Cork 

 and Bantry (Humphreys) ; Arran in Ireland (Barlee). 



It ranges from Norway to the Mediterranean. 



S. COMMUNIS, Lamarck. 



Variegated ; ribs prominent, oblique, of uniform size, their in- 

 tervals quite smooth ; sutures excavated. 



Plate LXX. fig. !), 10. 



Plancus, Conch. Minus Notis, pi. 5, f. 7. — GIxN'anni, Opere 

 Posth. pi. 6, f. 54. 

 'I'mbo duUirus, Linn. Syst. Nat. ed. 10 (not 12), p. 7G5 (partly). — Penn. Brit. 

 Zool. ed. 4, vol. iv. p. 129, pi. 81, f. 11 1. — Pultenev, Hut- 

 chins, Hist. Dorset, p. 45. — Mont. Test. Brit. vol. ii. p. 296 ; 

 Suppl. p. 120, animal. — Maton and Rack. Trans. Linn. Soc. 

 vol. viii. p. 170, var. a. — Rack. Dorset Catalog, p. 50. pi. 15, 

 f. 11, — TuRT. Conch. Diction, p. 207. — Born, Testacea Mus. 

 Ca3S. Vind. p. 354. — Dillw. Recent Shells, vol. ii. p. 854. — 

 Wood, Lidex Testae, pi. 31, f. 90. 

 Stroml/iformis cfatJiraius, Da Costa, Brit. Conch, p. 115, pi. 7, f. 11. 

 Turf/o vlat/iratiis. Do Nov. Brit. Shells, vol. i. pi. 28, f. 1,2, 3. 

 Scahiria cominu/iis, Lam. Anim. s. Vert. (ed. Desh.) vol. ix. p. 75. — Brit. Marine 

 Conch, p. 15G. — Blainv. Faune Francj. Moll. p. 314. — 

 Desh. Encycl. Method. Vers, vol. iii. p. 931, var. «. — 

 PHiLn>Pi, Moll. Sicil. vol. i. p. 1C7, pi. 10, f. 3 ; vol. ii. 

 p. 144. — Kiener, Coquilles Vivant. Seal. p. 12 (partly), 

 pi. i. f. 2, and pi. 4, f. 10. — Sowerbv, Thesaur. Conch, 

 vol. i. p. 85, pi. 32, f. 18, 19,20. 



