MOLLUSCA. 617 
Var. pallidior. 
Streptostyla sargi, var. pallidior, Crosse & Fischer, Journ. de Conch. xxiv. p. 384, t. 11. figg. 1b, ¢ 
(1876) °; Miss. Scient. Mex., Moll. ii. p. 662, t. 71. figg. 2, 20°, 
Pale coloured, with longitudinal whitish streaks, 
Long. 16, diam. 6, apert. 7 millim. 
Hab. N. Guaremata: Coban (Sarg > °). 
Var. championi, n. (Tab. XLIV. fig. 4.) 
Comparatively a little more ventricose, golden-yellow, with faint paler streaks. 
Long. 15, diam. 6, apert. 7 millim. 
Hab. N. Guatemata: Sabo in Vera Paz (Champion). 
33 (a). Streptostyla (Pittieria) bicolor, sp.n. (Tab. XLIV. fig. 6.) 
Testa turrita, solidiuscula, levissime striatula, nitida, rufescenti-fusca, zona subsuturali lata sulphurea ; spira 
elongate conica, apice obtusiuscula ; anfr. 74, primus minutus, papilleformis, secundus globosus, ambo 
unicolores, fusci, sequentes regulariter crescentes, paululum convexiusculi, sutura appressa, sulco marginata, 
ultimus basi sensim attenuatus, convexiusculus, antice non deflexus; apertura subperpendicularis, elliptica, 
sed superne et basi angulata, peristomate simplici, obtuso, intus fusco-limbato, fauce griseo-cerulescenti, 
margine externo supra leviter, infra magis arcuato, marg. basali rostratim producto, marg. columellari 
leviter incrassato et levissime spiratim torto, basi truncato. 
Long. 21, diam. 103; apert. long. 10, diam. 54 millim. 
Hab. K. Costa Rica: Uiskar in Alta Talamanca (Pittier, 1898). 
A very handsome shell, but difficult to place, for which I propose the new subgeneric 
name Pittieria. In the scheme of coloration and the smooth shining surface it agrees 
with various species of Streptostyla, e. g. S. nigricans and S. mitreformis; but the 
columella is scarcely twisted and at the lower end distinctly truncate. 
From Glandina it differs in the very smooth shell, without granulation, and in the 
columella not being concavely bent. 
OMPHALINA (p. 104). 
5 (a). Omphalina montereyensis. 
Omphalina montereyensis, Pilsbry, Proc. Acad. Phil. 1899, p. 395 - 
Near O. paradensis, but much more depressed. 
Diam. 12, alt, 6 millim. 
Hab. N.E. Mexico: Diente, near Monterey, State of Nuevo Leon (Mr. d& Mrs. Rhoads). 
Omphalina modesta (p. 110). ? 
Omphalina modesta, Biolley, Mol. terr. y fluv. de Costa Rica, p. 7’. 
To the localities given, add :— 3 
Hab. N.E. Costa Rica: La Paz, 750 metres (Biolley *). 
Centrat Costa Rica: La Palma, 1600 metres (Biolley ay, 
Found at the foot of trees and beneath decayed leaves.and trunks (Lvolley *). 
BIOL. CENTR.-AMER., Terr. and Fluviat. Mollusca, January 1901. "8 
