TROCHUS.—Prare VIII. 
Dr. Philippi is altogether wrong in his criticism (in 
Kuster, Conch. Cab. p. 215), on my figure of this species 
in Conch. Systematica, pl. 217, f. 7. The shell which I 
there figured twenty years ago I now figure again, and it 
is the true 7. olivaceus, Wood, figured in the Supplement 
to Index Testaceologicus, on a much reduced scale. Dr. 
Philippi has mistaken Wood’s reduced figure to represent 
the natural size of the shell, and re-produced it as such 
in his monograph ; but there is a mark against Wood’s 
figure to indicate that itis an inch and three-quarters long, 
the same mark as that attached to 7. wndosus, figured 
next but one to it. 7. olivaceus is the shell which Dr. 
Philippi figures in Plate 45 of his monograph, with the 
expressive name of 7. erythrophthalmus, after its principal 
characteristic, the blood-red basal callosity darkened in the 
middle with purple-black. In 7. Buschii the shell is nearly 
alike, except that the basal callosity is white. 
Species 42. (Mus. Cuming.) 
Trocaus Buscuit. roch. testé imperforatd, turgido- 
conoided, virente, ferrugineo-rufo sparsim tinctd, oli- 
vaceo aspersd, interdum ad marginem flammata ; anfrac- 
tibus ubique costellis rugaeformibus obliquis sculptis, | 
superne tumidis, deinde concavis, margine acutangulo, 
obsoleté squamato ; basi planatd, circa callositatem bi- 
liratd, callositate alba. 
Buscu’s Trocuus. Shell imperforate, turgidly conoid, 
green, sparingly stained with rust-red, sprinkled 
with olive, sometimes flamed at the margin; whorls 
everywhere sculptured with fine wrinkle-like ribs, 
swollen round the upper part, then concave, sharply 
angled and obsoletely scaled at the margin; base flat, 
two-ridged around the callosity, callosity white. 
Puruiprr, Abbild. und Besch. Conch. vol. i. p. 90. pl. 2. 
f. 3,4. Kuster, Conch. Cab. pl. 32. f. 1. 
Hab. Panama. 
There is little to distinguish this species on the upper 
surface of the shell from the preceding; but the base 
differs in being less concave with the ridges not granu- 
lated, and in the central callosity being without any indi- 
cation of colour. 
Species 43. (Mus. Cuming.) 
TROCHUS TENTORITFORMIS. 
acute conicd, flavido-spadiced, roseo tinctd ; anfracti- 
bus concavo-declivibus, obsolete granoso-corrugatis, un- 
dique obscure turyido-plicatis, margine acutangulo, in- 
ermi; basi concavo-excavatd, dense subtiliter imbri- 
Troch. testé imperforatda, 
cato-lirata. 
THE TENT-SHAPED TRocaus. Shell imperforate, sharply 
conical, yellowish-fawn, tinged with rose; whorls 
concavely sloping, obsoletely granosely ridged, ob- 
scurely turgidly plicated throughout, margin sharply 
angled, smooth; base concavely excavated, densely 
finely imbricately ridged. P 
Jonas, Zeitschr. fiir Malac. 1845, p. 66. 
Hab, Australia. 
The base of this species is excayately concave, exqui- 
sitely finely imbricated throughout, tinged here and there 
with a faint blush of purple-rose on a rust-fawn ground. 
