TORNATINA. 187 



T. INFREQUENS C. B. Adams. Unfigured. 



Shell cylindric, not compressed about the middle ; white; smooth; 

 apex papillary, very minute and prominent ; spire moderately 

 elevated, convex ; whorls four and one-half, acutely shouldered, 

 with a deeply channelled suture ; aperture long and narrow, ante- 

 riorly rounded ; labrum very thin, much advanced along the 

 middle ; columella terminating in a very robust spiral plait. Mean 

 divergence about 130 ; length "28 inch ; breadth '11 inch ; length 

 of spire -03 inch. (Ad.'). 



Alt. -14, alt. of spire '03, diam. '05 inch. (Cpr.*). 



Panama (C. B. Ad., 2 specimens) ; Mazatlan, very rare, on 

 Spondylus ealcifer. (Cpr.). 



Bulla (Tornatina) infrequens C. B. AD., Panama Shells, p. 214, 

 319. Tornatina infrequens CPR., Maz. Cat., p. 171. ? Bulla (Torn- 

 Una} gradlis MKE., Zeitschr. f. Mai. 1850, p. 162, not of A. Adams. 



Menke's species being white, not horn-coloured like T. gradlis 

 from the China Seas, and being identified from a single specimen 

 wedged in the mouth of a dead Conus puncticulatus, is almost cer- 

 tainly the same as that described by C. B. Ad. from Panama. T. 

 infrequens is distinguished by the olive-like spire, more or less ele- 

 vated and deeply channeled along the suture. The body whorl is not 

 swollen anteriorly, and the fold lies slanting on its base. (Cpr.). 



T. CARINATA Carpenter. Unfigured. 



Shell cylindrical, white, smooth, acutely carinated below the ap- 

 pressed suture, between the suture and the carina excavated. 

 Whorls 5, the two earlier being discoidaland affixed vertically upon 

 the spire, which is more or less apparent. Aperture elongate, the 

 lip acute and produced in the middle, slightly sinused behind ; inner 

 lip thin, swollen above the junction with the columella proper. 

 Columella provided with a stout spiral fold where it joins the 

 parietal wall. (Cpr.). 



Alt. -037 (smallest specimen). 



Alt. -11, diam. '05 inch.; length of spire '02 inch. 



Mazatlan, on Chama and Spondylus, very rare (Liverpool Colin.) ; 

 San Diego, California. 



Tornatina carinata CPR., Maz. Cat., p. 171. Rep. Brit. Asso. Adv. 

 Sci. 1856, pp. 250, 313 ; Moll. Western America, Smiths. Misc. Coll. 

 no. 252, pp. 37, 97, 133, 194. 



