224 
ALCADIA. 
17. nia client a Art. (Gray Phan. p. 301 . — Ad. 
Gen. p. 307. — Belie . macilenta C. B. Ad.) . . Mon. p. 411. 
18. A. rubella Pfr. 
T. conoideo-depressa, tenuis, oblique striatula, pilosa (de- 
trita oleoso-micans, diaphana), rubello-cornea ; spira convexa, 
vertice mucronulato ; anfr. 5V 2 angusti , vix convexiusculi, 
ultimus peripheria obsolete subangulatus, basi convexior ; aper- 
tura fere diagonals, semilunaris ; columella brevis, in denticu- 
lum sulco a callo basali tenuissimo separatum desinens ; perist. 
tenue, undique breviter expansum , margine basali subrectili- 
neari, incisura levi a columella distincto. — Operc. membra- 
naceum, concolor. — Diam. maj. , min. 5 l U, alt. 4 mill. 
(Coll. Nr. 153.) 
Helicina rubella (Alcadia) Pfr. in Proc. Zool. Soc. 1853. p. 60. 
Alcadia rubella Pfr. in Malak. Bl. I. 1854. p. 110. 
— — H. et A. Adams Gen. II. p. 307. 
Habitat in insulis St. Thomas et St. Jan Indiae occidentalis. 
19. A. CUmdlaelit Pfr. 
T. conoideo-depressa, tenuis, sub lente rugulosa , vix ni- 
tidula , corneo-rubella ; spira brevis, regulariter conoidea; su- 
tura impressa, pallide submarginata ; anfr. 5 convexiusculi, 
sensim accrescentes, ultimus magnus, rotundatus, ad periphe- 
riam obsoletissime angulatus et pallide zonatus, basi convexius- 
culus ; columella brevis , in denticulum retroflexum desinens, 
superne callum emittens tenuem, vix circumscriptum ; apertura 
obliqua, semiovalis; perist. brevissime expansiusculum , mar- 
gine basali subrectilineari, incisura brevi a columella separato. 
— Operc. membranaceum, carneum. — Diam. maj. 5 l L, 
min. 5, alt. 3% mill. (Coll. Nr. 154.) 
Alcadia Gundlachi Pfr . in Malak. Bl. I. 1854. p. 110. III. 1856. p. 150. 
Habitat in insula Cuba (Dr. Gundlach). 
* 
20. Iiisplda Pfr. (Coll. 155. — Gray Phan. p. 301. 
— Ad. Gen. p. 307. — Pfr. in Malak. Bl. 1856. 
p. 150. — Belie . hispida Pfr. 1839. — Belie, den- 
tiger a Orb.) Mon. p. 412, 
21. A. capax Gundlaeli. 
T. conoideo-globosa, ambitu orbicularis, tenuis, striatula 
et sub lente punctulata, pellucida, aurantiaco-succinea ; spira 
