210 GIBBULA. 



The solid shell is rather conical, for the whorls are quite level, 

 only projecting a little below the suture. They are grooved by 4 

 narrow slightly impressed furrows, besides which the last whorl has 

 a few inconspicuous furrows. The last whorl is angular at the 

 periphery and the ridge between this angle and the lower of these 

 furrows is somewhat more elevated than the i-est of the upper sur- 

 face. The base is rather elevated, with 4 to 6 slight narrow con- 

 centric furrows. The umbilicus is moderate, round, white, with a 

 sharp angle inside the outer edge. The aperture is quadrangular, 

 with well-rounded angles. The columella is rather arcuate. The 

 color is pale brown, at the suture white with large brown spots, 

 sometimes with reddish-brown oblique strokes between every two 

 furrows ; the base is checkered with white. 



Alt. 8, diam. 8 mill. (Philippi.) 



Hubitdt unloiown. 



T. turdus Phil. Couchyl. Cab., p. 308, t. 44, f 11. 



G. ADANSONi Payraudeau. PI. 30, figs. 1-4. 



Shell narrowly umbilicate, conical ; color maroon or deep brown, 

 with longitudinal undulating flames of white, continuous or inter- 

 rupted into spots on the base ; spire conoidal, elevated ; whorls 6 to 

 7, convex, traversed by numerous spiral strise ; last whorl large, 

 dilated, subangulate at the periphery, the base convex, concen- 

 trically finely lirate, each ridge divided by a central impressed line ; 

 sutures deeply impressed; aperture suhquadrangular, columella 

 straight or a little projecting in the middle; umbilicus deep, very 

 narrow, bounded by a carina. Alt. 12, diam. 10} mill. 



Mediterranean, Adriatic and Black Seas. 



T. adansonii Payr., Moll, de Corse, p. 127, t. 6, f. 7, 8 (1826). — 

 Philippi, Couchyl. Cab., p. 192, t. 29, f. 14, 15. — Fischer, Coq. 

 Viv., p. 343, t. 107, f. 1-4.— BuQ, Dautz. et Dollfus. 3Ioll. du 

 Houss., p. 394, t, 47, f. 1-5. — T. varians Desh., Exped. Moree, p. 

 142, t. 18, f. 31-33. — T. adriaticus Phil., Entim. Moll. Sicil., ii, p. 

 153, t. 25, f. 10.— r. turbinoides Desh., Expcd. Moree, p. 143, t. 18, 

 f. 28-30. — BuQ. Dautz. et Dollfus, Moll, du Rous'i., p. 396, t. 

 47, f. 26-30.— r. helicoides Philippi, Conchyl. Cab., p. 197, t. 29, f. 

 23. — Gibbula ivanicsi Brusina, Conch. Dalm. inecL, p. 27. — T. 

 ivanicsiana Brus., Contr. pella Fauna. Dalm., p. 80. — T. olivaceus 

 Anton, Verzeich., p. 57. — T. angulatus (Eichwald) Brus. (teste 

 Monterosato, II Nat. Sicil., iii, p. 105). — T. euxinicus Audv., Kryn. 



