MOLLUSCA. 
413 
Gen as 74. — A CIIA TIN A.— La marck. 
Generic Character. — Shell ovate or oblong ; aperture entire, 
elongated ; lip acute, never reflected ; columella smooth ; the 
base truncated. 
Achatina Virginea .— The Virginian Achatina. 
Plate LXXXVI. fig. 15. 
Smooth, grayish-white, with red and black transverse bands ; 
the columella with one plait, rose-coloured; volutions ventricose ; 
inside of the lip bluish. One and a half inch long. Inhabits 
South America. 
Genus 75. — B UL IM U S.— Lamarck. 
Generic Character. — Shell ovate, oblong, or turrited ; aperture 
entire, longitudinal; margins unequal, and disunited above ; 
columella straight, smooth, entire at the base, and not effuse. 
Bulimus montanus — The Mountain Bulimus. 
Plate LXXXVI. fig. 16. 
Ovate-oblong, umbilicated, slightly striated longitudinally; 
brownish horn-coloured; with seven convex volutions ; aperture 
semioval; outer lip white and reflected. Five-eighths of an inch 
long. Inhabits mountainous situations in Europe. 
Genus 76. — CL A USILIA. — Lamarck. 
Generic Character. —Shell sinistral, generally fusiform, slen¬ 
der; summit somewhat obtuse; aperture irregular, rounded, or 
oval; margins unified, free, and externally reflected. 
Clausilia papillaris .— The Pimpled Clausilia. 
Plate LXXXVI. fig. 18. 
Pellucid, finely striated longitudinally, horn-coloured brown ; 
the margins of the volutions papillose ; aperture with two plaits. 
Three-fourths of an inch long. Inhabits dry situations in 
Europe. 
Genus 77. — P UP A.— Lamarck . 
Generic Character. — Shell cylindrical, generally thick; aper¬ 
ture irregular, semi-ovate, rounded, and subangulated beneath ; 
margins of outer lip nearly equal, and reflected outwardly, 
2 L 3 
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