236 CATALOGUE OF PHANEROPNEUMONA. 
The species belonging to this genus may be arranged in the 
following manner :— 
A. Not carinate. 
1. Right margin of the peristome sinuate § 1. N. 1. 
2. Right margin not sinuate . “ . 2. 3 2a 
B. Slightly carinate : B. y O80. 
C. Distinctly carinate . - © 4. 5, blag 
§ 1. Shell not keeled, right edge of peristome sinuated. 
1. TROCHATELLA REGINA. 
Shell conic-globose, solid, minutely decussated by irregular 
oblique and impressed concentric lines, scarcely shining, lemon- 
yellow, or reddish-violaceous, marbled with white spots and 
painted with a blood-red band along the suture; spire conic, 
pointed; whorls 7, increasing rapidly, rather flat, the last one 
large, deflected anteriorly, rather angulate at the periphery; 
columella nearly perpendicular, flat; aperture oblique, tri- 
angularly lunate, shining, yellow inside; peristome simple, 
with the margins united by a very thin callus; right margin 
emarginated by a deep notch; basal margin effused, forming 
a right angle with the columella. Operculum shelly, white 
and excavate externally, yellowish and striate internally, with 
the columellar margin thickened. Height 18-21, greatest 
breadth 22-30, least br. 18-20 mill. 
Helicina regina, Morelet, Test. Noviss. i. p. 19, n. 43. 
Helicina maculosa, Mewcomb, JZSS.; Jay, Catal. 1850, p. 261, 
n. 6068. 
Helicina multistriata, Velasg. MSS.; Pfr. Ic. n. 89, p. 65, t. 9, 
f. 37, 38. 
Trochatella regina, Pfr. Pneum. Mon. p. 328. 
Hab, Cuba, Mount Guajaibon. 
§ 2. Shell not heeled, right edge of peristome not sinuated. 
2. TROCHATELLA VIRGINEA. 
Shell turbinate-globose, rather thick, sculptured with crowded 
concentric ridges, opaque, whitish; spire turbinate, with the 
apex mucronate; whorls nearly 7, very little convex, last 
rounded; aperture very oblique, entire, rather semicircular ; 
columella receding, grooved, terminated beneath in a rather 
free lamina; peristome bell-shaped, expanded, thickened in- 
ternally, with the margin sharp. Operculum shelly, whitish, 
surrounded with a raised margin and covered with highly- 
elevated granulations. Height 19, greatest breadth 23, least 
br. 18 mill. 
