CATALOGUE—SHELLS. 555 
I have dedicated to my friend, Dr. Sellow, whose researches in 
Natural History for several years past in the interior of Brazil, are 
well known to the scientific world. 
40, SUCCINEA FRAGILIS. 
S. testd ovato-acutd, diaphand, ventricosd, transversim striata, oblique 
subrugosé ; spird brevi; long. =; paulo minus ; lat. 3°; 5 poll. 
Habitat ad insulam Juan Fernandez. Mus. Brit., nost., Brod. 
41. SUCCINEA PATULA. 
S. testa diaphand, ovato-rotundaté, ventricosissima, transversim creber- 
- > : A oA a « A A A 
rimé striata ; spird brevissimé ; apertura patula ; long. * paulo 
plus ; lat. 3 paulo plus; poll. 
_ Habitat ad insulam Juan Fernandez. 
Marinuta. Nov. Genus. 
Character Genericus. 
Testd ovato-productd, sub-solidd ; apertura ovatd, integrd ; colu- 
melld bidentata, et basin versus uniplicatd ; dentibus magnis sub- 
remotis conniventibus, swperiore maximo ; operculum nullum. 
42. MARINULA PEPITA. 
M. testd ovato-productd, viridi-fused ; anfractibus sub-tumidis ; spird 
brevi; aperturd nigricante ; dentibus plicdque albidis ; long. 7; ; 
lat. 4, ; poll. 
Habitat ad insulam Childe. Mus. Brit., nost., Brod., -G. Sowerby. 
This animal, which I have thought it necessary to assign to a 
new genus, appears to have for its nearest neighbours the genera 
Auricula and Pedipes. It was found on the wooden piles which sup- 
port the mole in the Bay of San Carlos, in Childe, below the wash of 
the high water. The mole stands out into the sea, and there is no 
fresh water near it, save a very little rill, which discharges its tiny 
stream more than fifty yards off. 
43. LymMN#a DIAPHANA.—No. 349 MSS. 
: turritd, transversim substriatd, anfractibus ventricosis ; long. 
, paulo plus; lat. °. ; poll. 
bitat ad fretum Magellanicum (Cape Gregory). Mus. Brit., 
nost., Brod. 
This shell was found in the fresh-water ponds in the neighbour- 
hood of Cape Gregory, which is on the continental side of the 
eastern end of the Strait of Magalhaens. 
