ODOSTOMIA. 351 



A. Adams ; 0. striata, Folin. Monterosato enumerates vars. 

 simplex, exigua and concinna, Monts., and vixornata, Folin. 



Un figured Species. 

 {Including those of which the descriptions are not accessible). 



0. MODIOLA, 0. DILUCIDA, Monts. Mediterranean. 



0. MESSANENSIS, 0. GRANATA, 0. SEMIORNATA, Folin. Both con- 

 sidered by Mts. synonyms of 0. exilissima, Brusina, which 

 Jeffrej'S unites with 0. obliqua, Alder. 



0. SCANDENS, Brusina (0. obliqua, Mts., not Alder). 



Mediterranean. 



0. SULCATA, 0. BILIRATA, Folin. West Africa. 



Section DOLIELLA, Monts., 1880. 



0. NITENS, Jeffreys. PL 77, fig. 15. 



Thin, sernitransparent, very glossy, with microscopic growth- 

 lines, white ; whorls 3, besides the nucleus, suture very narrow, 

 slightly excavated, margined by the overlapping of the whorls; 

 umbilicus none; tooth represented by a broad, but not conspic- 

 uous, fold. Length, 2*5 mill. 



Mediterranean Sea. 



Jeffreys refers 0. Erjaveciana, Brusina, to this species, but 

 Monterosato considers the two species very different. 



0. DOLTOLIFORMIS, Jeffreys. PL 78, fig. 26. 



Rather thin, transparent, somewhat glossy, with about 20 

 remote and somewhat wavy spiral striae, almost perceptible by 

 the naked eye, and numerous microscopic growth-lines, whitish 

 or yellowish white ; whorls 3, besides the nucleus, slopingly 

 convex, suture channeled; outer lip abruptly incurved on 

 the periphery, tooth strong and conspicuous ; umbilicus a 

 small chink. Length, 1'85 mill. 



Europe. 



0. valida, Folin, is a synonym. 



