TROCHUS. 
Puare VIII. 
Species 38. (Mus. Cuming.) 
Trocuus corouta. rock. testé imperforata, acute co- 
nicd, albidd, fuscescente tinctd ; anfractibus acute de- 
clivibus, obliqué plicato-costatis, costis subundatis, ad 
marginem in squamis descendentibus, costis intersti- 
tiisgue undique decussatim corrugato-striatis ; basi 
dense imbricato-lirata. 
Tue coroner TRocuus. Shell imperforate, sharply co- 
nical, whitish, tinged with brown; whorls sharply 
sloping, obliquely plicately ribbed, ribs slightly waved, 
descending at the margin in scales, ribs and inter- 
stices decussated throughout with wrinkled strie ; 
base densely imbricately ridged. 
Hab. West Indies. 
It may very reasonably be argued that this is a variety 
of 7. imbricatus, but I do not at present see any inter- 
mediate form. Besides being uniformly smaller, the entire 
surface is delicately wrinkle-striated, and the base of the 
shell is regularly ridged. 
Species 39. (Mus. Cuming.) 
TROCHUS AURIPIGMENTUM. Tvoch. testd imperforatd, 
abbreviato-conoided, luted et virente, albo minute ta- 
niata; anfractibus acute declivibus, plus minus granosis, 
granisque in cingulis tribus moniliformibus, ad mar- 
ginem transversim compresse muricato-squamatis; basi 
radiatim dense lamellato-striatd, circulariter obscuré 
liratd, callo circa umbilicum aureo-rufo. 
THE GOLDEN PIGMENT TrocHus. Shell imperforate, 
shortly conoid, yellow and green, minutely filleted 
with white; whorls sharply sloping, more or less 
grained, with three encircling necklaces of grains, 
transversely compressly prickly-scaled at the margin; 
base radiately lamellately striated, circularly obscurely 
ridged, callus around the umbilicus golden-red. 
Jonas, Zeitschr. fiir Malac. 1849, p. 147. 
Hab. Panama. 
Distinguished by a strikingly coloured golden-red cal- 
losity around the umbilicus. Exteriorly the shell is of a 
yellowish-green colour, encircled with necklaces of gra- 
nules, which are half green and half white. 
Species 43. (Fig. a, 6, Mus. Cuming.) 
TROCHUS LATISPINA. Troch. testd imperforata, abbre- 
viato-conoided, cinereo-fuscd, ceruleo-olivaceo et albo 
lentiginosd ; anfractibus acuté declivibus, granis oblique 
productis aspersis, ad marginem transversim compressé 
muricato-sguamatis ; basi radiatim lamellato-striatd, 
circulariter medio validé quinque-liratd, callo centrali 
albo. 
THE BROAD-SPINE TRocuus. Shell imperforate, shortly 
conoid, ash-grey, freckled with bluish-olive and white ; 
whorls sharply sloping, sprinkled with obliquely pro- 
duced grains, transversely compressly prickly-scaled 
at the margin; base radiately lamellately striated, 
circularly strongly five-ridged in the middle, central 
callosity white. 
Puiuieer, Abbild. and Besch. Conch. vol. i. p. 92. pl. 3. 
i ee 
Hab. West Indies. 
Very like the preceding species in form and details of 
sculpture, but the colouring has a grey speckled character, 
and the central callosity of the base is white. 
Species 41. (Mus. Cuming.) 
Trocuus oLivaceus. Troch. testd imperforatd, turgido- 
conoided, alveariformt, virescente, olivaceo et ferrugineo- 
rufo tinctd et variegata, ad marginem conspicue flam- 
mata; anfractibus ubique costellis rugeformibus obliquis 
sculptis, superné tumidis, deinde concavis, margine 
acutangulo, obsolete syuamato; basi valdé concavé, 
circa callositatem biliratd, liris granatis, callositate ex- 
cavatd, intensé sanguined, medio purpureo-nigro tinctd. 
Tue otive TRocuus. Shell imperforate, turgidly conoid, 
hive-shaped, greenish, stained and variegate with 
olive and rust-red, conspicuously flamed at the mar- 
gin; whorls everywhere sculptured with fine oblique 
wrinkle-like ribs, swollen round the upper part, then 
concave sharply angled, and obsoletely scaled at the 
margin; base very concave, two-ridged around the 
callosity, ridges grained, callosity excavated, deep 
blood-red, stained with purple-black in the middle. 
Woop, Ind. Test. Supp. pl. 5. f. 3. 
Trochus erythrophthalmus, Philippi. 
Hab. Panama, California. 
November, 1861. 
