TROCHUS. 
PuatTE V. 
Species 23. (Mus. Cuming.) 
Trocuus Japonicus. Troch. testé imperforatd, depresso- 
conicd, ad basin expansd, fulvo-spadiced ; anfractibus 
convexo-declivibus, oblique granoso-corrugatis et pro- 
miscue superficialiter plicatis, marginibus enormiter 
compresse squamatis ; basi lineari-sulcatis, liris crenu- 
latis, columellé opaco-callosd. 
Tue Japan Trocuus. Shell imperforate, depressly 
conic, expanded at the base, fulvous-rust or fawn- 
coloured; whorls convexly sloping, obliquely gra- 
nosely wrinkled and promiscuously superficially pli- 
cated, margins enormously compressly scaled; base 
linearly grooved, ridges crenulated, columella opaquely 
callous. 
Dunker, Abbild. und Besch. Conch. vol. i. Trochus, pl. 5. 
ie I 
Pomaulax Japonicus, Gray. 
Hab. Japan. 
This fine species is curiously characterized by the enor- 
mous scales which are formed at the basal edge of each 
whorl by a rude expanded folding of the shell-growth. 
Species 24. (Mus. Cuming.) 
Trocuus pieitatus. Troch. testa imperforatd, obtuse 
conicd, purpurascente-albd ; anfractibus rudé convexis, 
superne et informe oblique plicato-squamatis, costis in- 
ferioribus super marginem productis ; basi convexius- 
culd, liratd, liris subdistantibus crenulatis. 
THE FINGERED Trocuus. Shell imperforate, obtusely 
conical, purplish-white; whorls rudely convex, ob- 
liquely squamately ribbed above and below, lower 
ribs produced beyond the margin; base rather con- 
vex, ridged, ridges somewhat distant, crenulated. 
Turbo digitatus, Deshayes, Mag. de Zool. 1841, pl. 36. 
Trochus digitatus, Philippi. 
Hab. Central America. 
This species differs from 7. unguis, which it greatly 
resembles in general aspect, and has been often mistaken 
for it, in two important particulars. The radiating squa- 
mate ribs extend conspicuously over the whorls in a com- 
pressed form, in an uncouth straggling manner, the inter- 
stices being concavely excavated ; and the base of the shell 
is convex and widely crenulately ridged, as in 7. gibde- 
| rosus. In 7. unguis the base is concave and finely stri 
ated. 
Species 25. (Mus. Cuming.) 
Trocuus GiBBEROsUS. Troch. testd imperforati, de- 
presso-conoided, opaco-albd, aurantio-ferrugineo varie 
tinctd ; anfractibus declivi-convexis, costis parvis no- 
dosis striisque creberrimis oblique decussatis, ad mar- 
ginem obsolete obtuse squamatis ; basi convexo-planata, 
liratd, liris subdistantibus, crenulatis, interstitiis exca- 
vatis, striato-decussatis. 
THE pimpLeD Trocuus. Shell imperforate, depressly 
conoid, opaque-white, variously stained with orange- 
rust; whorls slopingly convex, obliquely decussated 
with small nodose ribs and very close-set strize, ob- 
soletely obtusely squamate at the margin; base con- 
vexly flattened, ridged, ridges rather distant, crenu- 
lated, interstices excavated and striately decussated. 
Trochus gibberosus Nove-Zelandie, Chemn. Conch. Cab. 
vol. x. p. 287. vign. 23. p. 286. f. a, 6. 
Trochus inequalis, Martyn (not of Chemnitz). 
Trochus ochraceus, Philippi. 
Trochus tentorium, Anton. 
Uvanilla gibberosa, Adams. 
Hab. Australia and New Zealand. 
As Dr. Philippi has already shown in his monograph of 
Trochus, in Kiister’s ‘Conchylien Cabinet,’ this species 
was originally figured by Martyn, in his ‘ Universal Con- 
chologist,’ with the name 7. ixegualis ; but that name had 
been used three years before by Martini and Chemnitz in 
reference to another species. A few years later Chemnitz 
copied Martyn’s figure into his ‘Conchylien Cabinet,’ 
vol. x., as a vignette, and named it 7. gibberosus Nove- 
Zelandie. The species is well characterized by its peculiar 
orange-rust colouring and by the small nodose ribs cross- 
ing obliquely in a direction opposite to that of the oblique 
strie of growth. 
Species 26. (Mus. Cuming.) 
Trocuts unposvs. Troch. testa imperforatd, late co- 
noided, spadiceo-rufad, epidermide persistente fusca 
dense fibrosdé undique indutd ; anfractibus declivi-con- 
vexis, costis brevibus corrugatis et nodulorum serie 
moniliformi exsculptis, margine conspicue undato-tuber- 
culato ; basi conveno-pland, tri-quadrilirata. 
November, 1861. 
