ANODON SCHROETERIANA. 
ScHroprer’s ANODON. 
ANODON LITURATA. 
THE MARKED 
AS NiO PD KORN, 
PuatE XX. 
Species 77. Mus. ? (copied.) 
An, testa oblonga, subcom- 
pressd, tenui, fusca, subrugosd, intts pallide rosea ; la- 
tere postico oblongo, radiatim impresso, margine dur- 
sali rectiusculo, subelevato, margine laterali obliquo, 
termino truncato, margine ventrali undato, umbonibus 
levibus, haud prominentibus ; latere antico angustato, 
supra declivi, termino subacuminato, ante umbones sub- 
excavato. 
Shell oblong, subcompressed, 
thin, brown, subrugose, pale rose within; posterior 
side oblong, radiately impressed, dorsal margin ra- 
ther straight, shghtly elevated, lateral margin oblique, 
end truncated, ventral margin waved, umboes smooth, 
not prominent; anterior side narrow, sloped above, 
end subacuminated, slightly excavated in front of the 
umboes. 
Hur, Castlenaud’s 8. American Expedition ; Mollusca, 
p: 893 pli 7. f. 5. 
Hab. Upper Amazon. 

Species 78. Mus. ? (copied.) 
An. testa inflata, tenui, subquad- 
ratim ovata, viridi, lineis angularibus, interruptis et 
radiantibus notatd, ints tridescenti ; latere postico 
lato, expanso, margine dorsalo elevato, recto, terivino 
laté et rotundatim truncato, medio subcomplanato, 
margine ventrali recto, umbonibus rotundatis, promi- 
nentibus ; latere antico angustato, margine dorsali 
ante umbones excavaio. 
Anopon. Shell inflated, thin, rather 
square, ovate, green, marked with angular, inter- 
rupted, and radiating lines, inside iridescent; poste- 
rior side wide, expanded, dorsal margin elevated, 
straight, end widely and roundly truncated, middle 
rather flat, ventral margin straight, umboes rounded, 
prominent; anterior side narrow, dorsal margin ex- 
cavated in front of the umboes. 
Horr, Castlenaud’s S. American Expedition ; Mollusca, 
8b lio 1G Mloats Be 
Hab. Brazil. 

January, 186 
i} 

ANODON CASTELNAUDII. 
WEDDELL’s ANODON. 
Huew, Castelnaud’s 8. 
Species 79. Mus. ? (copied.) 
An, testa magni, crassissind, 
inflata, cuneatd, levigatda, concentrice leciter undulata, 
nigra, hianti, ints vivide iridescenti; latere postico 
oblique inflato, expanso, margine dorsali subalato, ele- 
vato, laterali declivi, termino rotundo, margine ven- 
trali convexo, umbonibus magnis, rotundis, prominenti- 
bus ; latere antico angustato, margine dorsali depresso, 
recto, teriino acuminato. 
CasTELNAUD’s ANopON. Shell large, very thick, inflated, 
cuneate, smooth, concentrically lightly undulated, 
black, gaping, brightly iridescent within; posterior 
side oblique, inflated, expanded, dorsal margin sub- 
alate, elevated, lateral sloped, end rounded, ventral 
margin convex, umboes large, round, prominent ; an- 
terior side narrow, dorsal margin depressed, straight, 
end acuminated. 
Hur®, Castelnaud’s S. American Expedition; Mollusca, 
15 HG Tale Aerts Ie 
Hab. Olympo, Paraguay. 
This magnificent shell belongs to the subgenus Lei/a. 
Species $0. Mus. ? (copied.) 
Anopon WreppetLu. An. testd solidd, oblonga, subellip- 
tied, fused, sublevigatd, intus iridescenti ; latere pos- 
lico rectiusculo, obtusissime angulato, area postangu- 
lari depresso, termino oblique truncato, medio subcom- 
planato, margine ventrali rectiusculo ; latere antico 
breviusculo, margine dorsali depresso, ante wnbones 
excavato, umbonibus lavibus, subprominentibus. 
Shell solid, oblong, subelliptical, 
brown, nearly smooth, iridescent within; posterior 
side rather straight, very obtusely angular, postangu- 
lar area depressed, end obliquely truncated, middle 
rather flat, ventral margin rather straight; anterior 
side somewhat short, dorsal margin depressed, exca- 
vated in front of the umboes, umboes smooth, rather 
prominent. 
American Expedition; Mollusea, 
p. o7, pl. Lit. 5. 
| Hab. Santa Anna de Chiquitos, Brazil. 
s 
