202 GIBBULA. 



G. ARDENs Vou Salis. PL 30, figs. 17-19. 



Shell umbilicate, depressed conic, solid, usually reddish or olive- 

 brown, with a subsutural series of short white flammules, a row of 

 white spots on the periphery, the remainder of the surface sparcely 

 punctate with white; spire acute, sutures markedly canaliculate; 

 whorls about 7, convex, spirally lirate, the interstices obliquely 

 regularly crispate-striate ; lira3 5 or 6 on the penultimate whorl, 

 frequently grooved, and usually with lirula3 between them ; base with 

 about S principal concentric lira3 ; aperture oblique, smooth within, 

 but apparently sulcate; columella siibdentate in the middle ; umbil- 

 icus funnel-sha})ed, bordered by a white rib. 



Alt. 12, diam. 15 mill. 



Mediterranean and Adriatic Seas ; Atlantic Coast of Portugal. 



T. ardens VoN Salis Marschlins, Reise ins Koen. Nea.p., p. 376, 

 t. 8, f. 9 (1793). — BuQUOY, Dautz. et Dollfus, Moll. d^iRonss., p. 

 379, t. 45, f. 9-11. — Gibbida ardens Monts., Norn. Gen. e Spec, p. 

 40.— T.fermonii Payrandeau, 3Ioll. de Corse, p. 128, t. 6, £ 11, 12 

 (1826). — Weinkauff, Conch, des Mitfelvieeres, ii, p. 377. — Fischer, 

 Coq. Viv., p. 145, t. 48, f. 3.; — T. adansoni Blainville, Faune franc, 

 t. 10a, f 7. — T. tessellatusVaiiA'P'pi, Conchyl. Cab., p. 190, t. 29, f. 

 9-12. — T. canaliculatus Deshayes, Exped. Moree, iii, p. 137 (1832) 

 (not of Lara., nor d'Orb.). — Gibbnla barbara Monterosato, N'om. 

 Gen. e Spec, Y). 40 (18S4:). — T. succinctus Monterosato, Enuvi. e 

 Synon., p. 20 (1878). 



This species is allied to G. albida Gm. It is less elevated, has 

 more deeply canaliculate sutures, is less carinate at the periphery, 

 and is always umbilicate. The coloration is quite variable, as well 

 as the sculpture. 



Omitting the references given by some authors to Chemnitz and 

 Gmelin, as entirely unidentifiable, the first description of this form 

 is that of von Salis. The figure and description given by this 

 author are perfectly applicable to the present form, although the 

 figure (like all of von Salis's) is reversed ! The next name in order 

 is that proposed by Payrandeau. 



Var. succiNCTA Monts. PI. 33, figs. 82, 83. 



Lime prominent, separated by profound narrow grooves. 



Gulf of Gabes, Turns. 



