165 
genera on a single Sp. and re- 
fer others by mere habit. Be 
has done so here. His G. (an- 
num contains 3 or 4 separate 
G. The Ct nervosum must 
form the G. Stemonix by un- 
guiculate fil aments and polypi) - 
yllous umb,el. LTleritier has 
made the G. Agapanthus with 
Cr. africanum. Others are re- 
feree! to Amarylis and Hcman- 
thus. I propose to call this 
$cqdianus meaning blue umbel, 
and thus define it. 
Corolla with tube oblong, lim- 
bus equal campanulate, six fid, 
segments canaliculate, 3 broad- 
er obtuse, 3 narrower acute. 
Stamens, 6 unequal curved fili- 
form. Pistil oblong, free. Style 
filiform streight, stigma simple. 
Compare this with Crinum 
Sp Agapanthus. 
This plant gave rise to 
another singular blunder. It 
grows in the marshes of New 
Orleans, and is called Blue 
Squill, whence it was mistaken 
for the true Squill or S cilia 
marithna and collected as such ! 
but wa£ found more suitable to 
adorn gardens than pharma- 
cies. 
126. On 3 JY. Gr. of Land Shells 
fro tn Buenos Ayres in South 
America . ByC.S.Rafnesque . 
They are from the cabinet of 
Prof. Green, where they are not 
labelled, and who permitted me 
to describe them. f 
1. Siphalomphix, Raf. N. G. 
shell conical, opening oval 
acute, end rounded, columella 
twisted with a tujmlar ombilic. 
It differs from Agathina by the 
columella and ombilic. 
8. bonariensis , Raf. or Ag. 
bonariensis, Raf. Six spires tip 
nearly obtuse, first spire with a 
transversal angle— shell about 
one inch long, whitish semi- 
transparent, brittle. 
2. Stegomphix , Raf. N. G.‘ 
shell oval opening nearly round 
lips not quite joined, the inter- 
nal covering a small spiral om- 
bilic. Therefore different 
from Cyclostoma and Faludina, 
St elegans, Raf. ( or Cyclos - 
tonia ) oval with 5 spires, white, 
end nearly obtuse yellow', spires 
with many small prominent 
transversal strias.— One inch 
long or less very pretty. 
3. Biplicaria . Shell oval, 
opening oval, columella broad- 
ly plaited with 2 folds or thick 
oblique ribs.— Near Voluta 
and Torticella, but not marine. 
B. bonariensis , Raf. Oval ob- 
tuse. smooth olive color with 2 
spires only— small shell of half 
inch. 
1 27. On 5 JYcw Fresh Water 
Shells , of Bengal and Assam 
in Asia. 
They have been collected by 
Dr. Burroughs and are in my 
cabinet. 
1. Flanorbis albescens, Raf. 
nearly smooth whitish flattened 
on the right side with 3 raised 
spires, only 2 on the left in. a 
hollow, opening hardly oblique. 
Size above half inch. 
2. Faludina vitula, Raf. 
oval conical acute, 5 spires, 
swelled before, olivaceous 
with narrow spiral brown 
bands.- — Size about one inch 
long. 
3. Faludina fragilis, Raf. 
