TURRITELLA. 209 



T. SUBSQUAMOSA, D linker. Bass Strait, Australia. 



T. DURA, Morch. Realejo, Centr. Am. 



T. QRANOSA, Quoy. Not a Turritella. 



T. CERITHIUM, Quoy. =Cerithium. 



T. VIRGINIANA, Lam. (?) Virginia. 



T. TRICINGULATA, Anton., T. NiVEA, Anton. No locality. 



T..SPINA, Crosse and Fischer. Australia. 



T. PUNCTICULATA, Sowb. Agulhas Bank, So. Africa. 



T. IMPRESSA, Say, T. BISUTURALIS, Say. Odostomia. 



T. NEBULOSA, Kiener. Not a Turritella. 



T. TASMANICA, Tenison-Woods. Tasmania. 



T. CONCAVA, Say, T. ALTERNATA, Say. =Terebra. 



T. ^EQUALIS, Say. = Turbonilla. 



T. TRICINCTA, Hutton. Described as a tertiary fossil, but is also 

 living. T. symmetrica, Hutton and T. rosea, Mantell (not 

 Quoy), are synonyms. N. Zealand. 



Subgenus MESALTA, Gray, 184-2. 



T. BREVIALIS, Lam. PI. 65, figs. 27-29. 



Whorls 15, convex, five-ridged, the upper one often forming a 

 sutural margin, lower ones frequently faint, interstices finely 

 closely striated ; aperture a little effuse below ; white, ash-color 

 or brownish olivaceous, aperture often violaceous. 



Length, 2-2*5 inches. 



Northern and Western Africa. 



The synonymy includes T. mesal, Deshayes ; T. sulcata, Gray; 

 T. suturalis, Forbes. 



T. VARIA, Kiener. PL 65, figs. 30, 31. 



Whorls 12, convex, about five-ridged ; yellowish white to violet 

 ash-color, interior brownish. Length, 1 inch. 



West Africa, Cuba. 



T. Caribaea, d'Orb. (fig. 31), from the latter locality, appears 

 to be identical ; it remains to ascertain whether this species is 

 really distinct, or only a small variety of T. brevialis. 



T. MELANOIDES, Reeve. PI. 65, fig. 32. 



Whorls 10, slightly concave at the upper part, obliquely longi- 

 tudinally plicately ribbed, decussated with numerous spiral striae 

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