_ EULIMIDA. 233 
Distr.—3 sp. Carb.; Indiana. B. bulimiformis, Hall. 
Shell fusiform, spire produced; volutions convex, the last 
large ; columella bent and truncated at the base, where it is 
separated from the outer lip by a notch, as in the recent genus 
Achatina ; outer lip very slightly notched near the upper end ; 
surface of the shell smooth. 
CuHEMnNirzia, d’Orb., 1850. 
Etym.— In honor of Chemnitz, a distinguished Nuremburg 
conchologist, who published seven volumes in continuation of 
Martini’s ‘‘Conchylien Cabinet,” 1780-1795. 
Distr.— Fossil only, 250 sp. World-wide. Triassic—. C. 
condensata, Desh. Ixviii, 96). 
Shell comparatively large, elongate-conical; spire many- 
whorled, not reversed at the apex ; last whorl moderately large, 
somewhat produced below; aperture ovate, sometimes faintly 
effuse at base; peritreme not continuous; outer lip sharp, with 
usually a faintly sinuous outline near or above the middle; col- 
umella smooth ; imperforate; surface with longitudinal costz 
or lines, sometimes crossed by revolving striz—rarely nodular. 
I restrict Chemnitzia to the fossil group so known, and which 
appears to have been most nearly related to the EKulimide. The 
much smaller sized ribbed recent species which have been referred 
to this genus,and which d’Orbigny actually included in his earliest 
definition of it, are distinguished under the name of Turbonilla, 
Risso. They do not possess the broad posterior insinuation of 
the outer lip characteristic of Chemnitzia. 
CHEMNITZIA (restricted). Shell lengthened with cross-ribs ; 
moutb oval, rounded or angular in front; spire straight or slightly 
curved, somewhat callous; outer lip sharp. Ch. similis, Munst. 
RHABDOCONCHA, Gemmellaro, 1878. Whorls striate or ribbed 
longitudinally, which are sometimes punctate or tuberculate. 
C. crassilabrata, Terq. 
PSEUDOMELANIA (Pictet), Gemmellaro,1878. Shell long, thick ; 
whorls smooth, with fine curved growth-lines; mouth rounded 
or angular in front ; spire straight or slightly curved. Ch. Nor- 
mannia, d’Orb. 
OONIA, Gemmellaro, 1878. Shell egg-shaped, smooth, with 
growth-lines ; last whorl large; mouth oval, rounded in front ; 
spire slightly curved. Ch. Cornelia, d’Orb. 
MicRoscHizA, Gemmellaro, 1878. Shell usually with cross- 
ribs; narrowly perforated ; whorls sharp, mostly scalariform ; 
mouth oval, rounded in front; inner lip and spire callously 
thickened. C. Philenor, d’Orb. 
Loxonema, Phillips. 
Etym.— Lowxos, oblique, and nema, thread; in allusion to the 
striated surface of many species. 
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