TIRRITELLA. 197 



T. terebra of Linn. Faun. Suec., but not of the Systema, and 

 some conchologists prefer this name ; it is more frequent^ known, 

 however, as T. cornea, Lam., although its identification is not 

 beyond question. Other synonyms are T. ungulina, Loven, etc. 

 (not Linn.), T. Linnsei, Deshayes, and T. imbricosoluta, Gregorio, 

 the latter described as a variety. 



T. CAPENSIS, Krauss. PI. 60, fig. 47. 



Whorls about 15, rounded, brownish, white-clouded, with 

 irregular obtuse revolving lines and deep suture, base a little 

 angulated, aperture light brownish. Length, 28 mill. 



Cape of Good Hope. 

 T. TRIPLICATA, Studer. PI. 60, figs. 48-50. 



Whorls 15, with deep suture, spirally striated, three-ribbed, 

 ribs flattened, the middle one the largest, the upper one smallest, 

 duplicate, and sometimes obsolete towards the apex ; whitish, 

 variegated and flamed with chestnut, sometimes all chestnut. 

 Length, 1-1*5 inches. 



Mediterranean Sea; West Africa ; 



Canary 7s., Coast of Spain. 

 Includes T. incrassata, Sowb., T. tricarinata, Brocchi. 



Var. TURBONA, Monts. Fig. 50. 



Shell larger, bicarinate. Near Civita Vecchia. 



T. FASCIALIS, Menke. PI. 59, figs. 36, 37. 



Very slender; whorls about 18, convex, four-ridged, suture 

 deeply impressed ; yellowish, chestnut banded at the suture. 



Length, 1 inch. 



Japan, China Sea. 



Menke described his species without locality; the shell which 

 Reeve has figured for it is said, on the authority of Cuming, to 

 have been dredged in " Bay of Montija, Central America (in 

 coarse sand at the depth of seven fathoms)." That this habitat 

 is an error can scarcely be doubted ; not only has the locality 

 failed to yield additional specimens, but Mr. A. Adams has 

 recognized in the figure a Japanese species of which the unfigured 

 T. gracillima, Gould, of Japan, likewise, is a synonym. My 

 type specimens of the latter confirm this. T. bicolor, Ad. and 

 Reeve (fig. 37), is another synonym. 



