CALLIOSTOMA. 385 



on tlie basal ril)lets with rich brown, and frequently with rather 

 obscure clouded niaculations of pale brown above. The surface is 

 shining, closely sculptured by numerous narroxv threads or riblets, 

 tohich on the spire are contiguous, finely, regularly beaded, becoming 

 more separated on the last whorl, the interstices o'liliquely striate, 

 the spiral riblets either granulate or nearly smooth ; base with 

 numerous concentric lirulse, granose or nearly smooth, the interstices 

 radiately striate. The spire is elevated, slender, its outlines concave ; 

 apex minute, apical whorl smooth, rounded ; suture linear, its position 

 marked by a slightly prominent double granose cingulus above it. 

 Whorls about 8, flat, the last strongly angular at the periphery, con- 

 vex beneath. Aperture subquadrate, finely sulcate inside ; columella 

 subvertical, arcuate, cylindrical. Alt. 31, diam. 33 mill. 



Mediterranean and Adriatic Seas ; Atlantic coast, from Scotland to 

 Madeira and Canaries. 



Tr granubdiis BoRN, Ind. rer. Natur Mus. Cfes. Vind., p. 343 

 (1778) ; Test. Mus. Cies., t. 12, f. 9, 10.— Lamarck, An. s. Vert, 

 vii, p. 26. — Blainv., Fauna Franc, p. 260, t. 10, f. 5. — Philippi, 

 Enum. Moll. Sicil. i, p. 74, t. 10, f. 22; ii, p. 149.— Forbes & 

 Hanley, Brit. Moll, ii, p. 499, t. 67, f, 7. — Jeffreys, Brit. Conch. 

 iii, p. 327, V, p. 204, t. 63, f. 5.— Hidalgo, Mol. Mar. Esp., t. 59, f. 

 9-11. — Fischer, Coq. Yiv., p. 79, t. 18, f 1. — Buq., Dautzenb. bt 

 DoLLF., Moll. Mar. du Rouss., p. 359, t. 48, f 1-5. — Ziziphinus 

 grannlatus Brusina, Contr. pella Fauna Dalm., p. 79.— Tr. papillosus 

 Da Costa, Brit. Conch., p. 38, t. 3, f. 5, 6. — Donovan, Brit. Sh., 

 iv, p. 127. — TuRTON, Conch. Diet., p. 190, t. 16, f. 62. — Philippi, 

 Conchyl. Cab., p. 85, t. 15, f. 5. — Tr.fragilis Pulteney (not Gmel.) 

 Catal. Dorset., p. 48, t. 16, f 6.— ?'. tenuis Montagu, Test. Brit, i, 

 p. 275, t. 10, f 3.— Risso, Hist. Nat. Eur. Merid. iv, p. 129. 



Larger than any other granulate European species, and further 

 distinguished by the thin shell, inflated base, etc. 



The following varieties are admitted by Messrs. Buquoy, Dautzen- 

 berg and Dollfus. The diflerential charactei's are very slight. 



Var. nobilis Monts. Very large, of a uniform ferruginous brown 

 color. Malta. 



Var. conoidea JeflTr. More solid, more regularly conical than the 

 type, the last whorl less dilated. 



Var. l(evis Brugnone. Spiral lirse not granulate. 



Pleistocene of Monte Pellegrino. 

 25 



