TURBONILLA. 32 1 



T. cosTiFERA, E. A. Smith. PI. 75, fig. 92. 



Light fulvous ; whorls 8, rather flattened, longitudinally cos- 

 tate, the interstices finely spirall}'' striate, with a diaphanous 

 band below the suture ; columella uniplicate. Length, 5'5 mill. 



Wlii/daJ), W. Africa. 



T. sPECTABiLis, Monts. (unfigured). Mediterranean. 



T. CLATHRATA, Jeffreys. PI. 74, figs. 71, 72. 



Shell solid, opaque, shining; whorls 7, convex, with about 20 

 strong flexuous longitudinal ribs, extending to the base of the 

 bod}- -whorl, with equal interstices, which are crossed b^^ two 

 strong spiral interrupted riblets (three on the last whorl) ; color 

 whitish or pale reddish brown ; columella without tooth. 



Length, 4 mill. Great Britain. 



T. siGMOiDEA, Monts. PI. 75, figs. 93, 94. 



Rather thin, semitransparent, glossy; whorls 8, flattened, 

 with about 25 xevy flexuous oblique ribs, the wider interstices 

 spirallj" striate. Length, 3'75 mill. Algiers, Palermo. 



T. FLEXuosA, Jefi're^'s. PI. 75, fig. 95. 



Eather thin, semitransparent, glossy; whorls 5, flattened, 

 with 15-20 sharp, flexuous longitudinal ribs, abrupt or sub- 

 nodose at the suture, almost disappearing at the periphery 

 where thej- are crossed by a few spiral stria?. Length, 2-5 mill. 



Mediterranean Sea. 



Section Pyrgostylus, Monts,, 1884. 

 T. STRiATULA, Linn. PI. 74, fig. 75. 



Shell tliin, pale brown, with three darker bands, closely longi- 

 tudinally ribbed, with much narrower interspaces, both crossed 

 by distant spiral striae, of which there are four on the spire- 

 whorls ; whorls (normal) 9, rounded, with well impressed suture. 



Length, 9 mill. Mediterranean. 



The synonyms include T. striolata, Weink. ; T. varicosa, 

 Forbes ; T. potamoides, Cantraine ; T. pallida^ Phil. 



T. CANDIDA, T. RUGOSA, FoHn. Wed Africa. 



The work in which these are described and figured is not 

 accessible. 



