MOLLUSCA — CTENOBRANCHIA. 
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dilatata, Brod., globosa, Brod., alata, Sow., Nuttalli, Reel., granosa, 
Sow., intermedia, Sow., lahiosa, Sow. 
Recluz describes nine species of the genus Navicella, amongst which, 
N. variabilis, cumingiana, clypeolum, all from the island of Mindanao, 
are regarded as new. (Proc. p. 154.) 
Le Guillou describes four new species of Natica in the Rev. Zool. 
1842, p. 104 : — N. quadrifaciata, from Mangareva ; N. candidissima, 
from Vavao; N. sandalina, from Sandal Bay; N. parvula, from 
Borneo. 
In Philippi’s plates and descriptions of new shells, No. 1, there is one 
plate dedicated to the genus Natica, which contains, besides N. reclu- 
siana, Desh., duplicata, Say, heros. Say, triseriata. Say, plumbea, 
Lam., conica, Lam., semisulcata. Gray, consolidata, Couthouy, several 
new species. N. ajinis, v. d. Busch ; oval, smooth, with white and red 
alternate bands, and red longitudinal streaks ; umbilicus wide, with 
small spiral callosity ; Hab. ? N. rhodostoma, Phil. ; white, with five 
rows of rust-brown spots ; mnbilicus open ; columella and callosity of 
columella rose-coloured : Hab. ? N. alba, Loven ; smooth ; greenish- 
white ; umbilicus quite closed ; labium scarcely callous : Greenland. 
N. pygmeea, Phil. ; white, with red points, and three indistinct bands ; 
labyrinth forms partitions, whilst the whorls above are pressed flat to 
the suture : Hab. ? N. septentrionalis. Beck., in Holler's Moll. Gronl. ; 
spherical, grey-red ; umbilicus concealed by a semicircular callosity ; 
operculum chalky. N. nana, Moller, ib. ; spherical, imperforate, white, 
operculum horny : both from Greenland. N. uberina, D’Orb., Cuba ; 
smooth white, six whorls. N. sagraiana, id. ; white, with brown 
undulating longitudinal lines ; is perhaps N. pulchella, Pfr. ; Archiv. 
1840, p. 254. N. lacernula, id. ; brown-red, with a white band 
anteriorly, sutures white. 
D’Orbigny (Cuba) adds three new species to the genus Narica, Reel., 
viz., — N. sulcata, striata, lainellosa. 
Amaura, nov. gen., Moller, Moll. Gronl. p. 7 ; Animal Naticis afiine ; 
pede parvo, compacto, lobo posteriore destituto, lobo anteriore profunde 
sinuato, oculis subcutaneis, ad basin internam lobi sitis ; operculo ter- 
minali, paucospirato ; testa ovata, imperforata, laevi, spira producta, 
apertura obpyriformi, circiter dimidi ae testae longitudinis. A, Candida ; 
white, shining : Greenland. 
Sigaretus helicoideus, Le Guillou, Rev. Zool. 1842, p. 105; milk 
white, furrowed vertically, striped longitudinally, with an umbilical 
cleft ; 17 mill. : Amboyna. S. (?) groenlandicus, Moller, 1. c. p. 10. 
Velutina lanigera, id. ib. ; auriform, woolly, bright yellow. 
Belphinula calcaroides, Cantraine, Bull. Brux. ix. 2, p, 341 ; testa 
parva, orbiculata, supra plana, infra convexa, late umbilicata ; anfr. 
3-4, ultimo bicarinato ; carina superna spinis arniata, inferna crenata ; 
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