ODOSTOMIA. 



351 



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

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



Unfigured Species. 

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



0. MODIOLA, 0. DiLUCiDA, Monts. Mediterranean. 



0. MessanEiNSis, 0. Granata, 0. semiornata, Folin. Both con- 

 sidered by Mts. synon3'ms of 0. exilissima, Brusina, which 

 Jeffre3's unites with 0. obliqiw,, Alder. 



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



Mediterranean. 



0. SULCATA, 0. BiLiRATA, Folin. Wcst Africa. 



Section Doliella, Monts., 1880. 



0. NiTENS, Jeffreys. PI. 71, fig. 15. 



Thin, semitransparent, very gloss}^, 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 veiy different. 



0. DoLiOLiFORMis, Jeffreys. PL T8, fig. 26. 



Rather thin, transparent, somewhat glossy, with about 20 

 remote and somewhat wavy spiral strise, almost perceptible by 

 the naked e3^e, and numerous microscopic growth-lines, whitish 

 or j-ellowish white ; whorls 3, besides the nucleus, slopingly 

 convex, suture channeled ; outer lip abruptly incurved on 

 the peripher}', tooth strong and conspicuous; umbilicus a 

 small chink. Length, 1-85 mill. 



^.<r^-*^-. Europe. 



0. valida, Folin, is a synonym. 



