614 SUPPLEMENT. 
Turrite, very shining, not at all granulatad, yellow; spire obtusely convex: suture moderately impressed ; 
columella much excavated. 
Long. 113, diam. 34, apert. 4 millim. 
Hab. S.W. Mexico: Colima (folle 1). 
STREPTOSTYLA (p. 83). 
The subgenus Oryzosoma of Pilsbry is here treated as a separate genus, vide infra, 
p. 640. 
Streptostyla nigricans (p. 90). 
Streptostyla nigricans, Pilsbry, Proc. Acad. Phil. 1892, p. 338”. 
To the localities given, add :— 
Hab. [S.E. Mexico :] Mountains of Tabasco (Rovirosa 1°). 
Streptostyla mitreformis (p. 90). 
Streptostyla mitreformis, Biolley, Mol. terr. y fluv. de Costa Rica, p. 6 (1897) °. 
To the localities given, add :— 
Hab. Centrat Costa Rica: La Palma, 1600 metres (Biolley®); Azahar de Cartago 
(Biolley). 
Biolley ® states that this and other species of the genus live at the roots of trees, in 
moss or on the underside of decaying leaves, and never in numbers together. 
Streptostyla delattrei, var. edwardsiana (p. 91). 
Streptostyla edwardsiana, Pilsbry, Proc. Acad. Phil. 1891, p. 311 ”. 
Pilsbry’s specimens were from Orizaba (Heilprin'>), whence I have already 
recorded it. 
8 (a). Streptostyla novoleonis. 
Streptostyla novoleonis, Pilsbry, Proc. Acad. Phil. 1899, p. 397". 
Near S. shuttleworthi, but short in the spire, markedly cylindrical, with the columella only weakly twisted. 
Long. 16-17, diam. 6°7—7, apert. 11:38-12 millim. 
Hab. N.E. Mexico: Diente near Monterey, State of Nuevo Leon (Mr. & Mrs. Rhoads"). 
This is by far the most northern locality for a species of the present genus. 
Streptostyla turgidula (p. 95). 
Streptostyla turgidula, Biolley, Mol. terr. y fluv. de Costa Rica, p. 7 (1897) °. 
To the localities given, add :— 
Hab. Centrau Costa Rica: La Palma, 1600 metres, Tarbaca, 1700 metres, and Azahar 
de Cartago (Biolley °). 
