FUSUS. 
PLATE. 
Species 48. (Fig. a, Mus. Cuming. Fig. 6, Mus. Taylor.) 
Fusus cretaceus. Fus. testd fusiformi-ovatd, solidius- 
culd, abbreviaté et leviter contortd, anfractibus rotun- 
datis subventricosis, undique spiraliter sulcatis, labro 
intus seriatim noduloso; intus extusque peculiariter 
cretaceo-albd. 
THE CHALK Fusus. Shell fusiformly ovate, rather solid, 
abbreviated and slightly twisted at the base, whorls 
rounded, somewhat ventricose, spirally grooved 
throughout, lip distinguished in the interior by a 
row of nodules; pecularly chalk-white within and 
without. 
py 
Fab. 
This species appears to have been mistaken for a solidi- 
fied state of the 2. Magellanicus in which the latticed 
sculpture is obsolete; an examination of specimens in 
different stages of growth will, however, sufficiently show 
that it is distinct. 
Species 49. (Fig. a, 6, Mus. Taylor. Fig. c, Mus. Cuming.) 
Fusus pizatatus. Fus. testd oblongo-fusiformi, anfracti- 
bus undique conspicué sulcatis et tenuissime striatis, 
superne angulatis, ad angulum plicato-tuberculatis, tu- 
berculis interdum subcompressis ; fuscescente, liris in- 
tensé castaneis, intus albd. 
THE DILATE Fusus. Shell oblong-fusiform, whorls con- 
spicuously grooved and finely striated throughout, 
angulated round the upper part, plicately tuberculated 
at the angle, tubercles sometimes slightly compressed ; 
pale brown, ridges deep chesnut, interior white. 
XIII. 
Quoy and Garmarp, Voy. de lAstrolabe, Zool. vol. ii. 
p- 498. pl. 34. £15 to 17. 
Fusus adustus, Philippi. 
Hab. New Zealand; Hooker. 
A fine species of comparatively rare occurrence collected 
by M.M. Quoy and Gaimard at New Zealand; also by 
Dr. J. D. Hooker during the voyage of H.M.SS. Erebus and 
Terror to the Antarctic Regions. It is extremely variable 
in growth, the tubercles on the angle of the whorls being 
compressed in some specimens, whilst in others they are 
disposed in numerous folds; and I think it not improbable 
that the Lwsus Mandarinus of Duclos may prove to be a 
state of the species in which the tuberculated angularity 
of the whorls is altogether wanting. 
Species 50. (Mus. Taylor.) 
Fusts pyrutatus. Fus. testé elongato-pyriformi, anfrac- 
tibus rotundatis, subventricosis, costis tumidis longitu- 
dinalibus et transversis subdistantibus nitide clathratis ; 
lutescente, rufo-fuscescente hic illic pallide tincta. 
THE PEAR-SHAPED Fusus. Shell elongately pyriform, 
whorls rounded, somewhat ventricose, neatly latticed 
with longitudinal and transverse swollen ribs; yel- 
lowish, faintly stained here and there with reddish- 
brown. 
Hab. Van Dieman’s Land. 
Of light growth, amply distinguished from any other 
species both in form and sculpture. 
December, 1847. 
