TROCHUS. 
Puate X. 
Species 51. (Mus. Cuming.) 
TRocHUS TRIUMPHANS. Troch. testdé calloso-umbilicatd, 
depresso-conoided, purpureo-rufescente;  anfractibus 
convexo-declivibus, granis conspicue elevatis dense 
cingulatis, ad marginem spinis longissimis subdistan- 
tibus radiatis ; aperturé parviusculd, labro sinuato. 
THE TRIUMPHANY TrocHus. Shell callously umbili- | 
cated, depressly conoid, purplish-red ; whorls con- 
vexly sloping, densely encircled with conspicuously | 
raised grains, rayed at the margin with very long 
rather distant spines; aperture rather small, lip 
sinuated. 
Putri, Fiinft. Jah. des Ver. f. Naturk. p. 8. 
Imperator Guildfordie, Gray. 
Trochus Guildfordie, Reeve. 
Guildfordia triumphans, Adams. 
Hab. China, Japan. 
This very elegant and rare species is singularly charac- 
terized by the marginal scales being developed into long 
radiating tubular spines. 
Species 52. (Fig. a, 6, Mus. Cuming.) 
Trocuus caLcaR. Troch. testd imperforatd, subgloboso- 
conoided, lutescente ; anfractibus declivi-convexis, ob- 
liqué rude corrugatis, deinde tuberculis crassis radici- 
formibus ad extremitatem viridibus cingulatis ; basi 
densé minuté muricato-squamosis; aperturd parvius- 
culd, obliqua. 
THE spur TrocuHus. Shell imperforate, somewhat glo- 
bosely conoid, yellowish ; whorls slopingly convex, 
obliquely rudely winkled, then encircled with thick 
root-like tubercles, which are green at the extremity ; 
base densely minutely prickly scaled; aperture ra- 
ther small, oblique. 
Turbo caicar, Linnzus, Syst. Nat. 10th edit. p. 762. 
Trochus calcar, Chemnitz. 
Calear Spenglerianum, Chemnitz. 
Trochus stella, Lamarck. 
Stella calcar, Gray. 
Hab. Philippine Islands ; Cuming. 
This well-known species, when in a fine state, has the 
root-like extremities of the tubercles painted with bright 
green. 
| 
| 
Species 53. (Mus. Cuming.) 
TRocHuUS GIRGYLLUS. Troch. testd tmperforatd, conico- 
| turbinatd, aurantio-rosed ; anfractibus undiqué papil- 
| lato-granatis, superné depressé convexis, deinde bian- 
! gulatis, ad angulos squamatis, squamis peculiariter late 
expansis, suturis impressis; basi subconvexd, callo 
central chromo-aurantio ; apertura subobliqua. 
| THE SPINNING-WHEEL TrocHus. Shell imperforate, 
conically turbinated, orange-rose ; whorls papillary- 
grained throughout, depressly convex at the upper 
part, then two-angled, scaled at the angles, scales 
peculiarly broadly expanded, sutures impressed ; base 
rather convex, central callosity chrome-orange ; aper- 
ture rather oblique. 
| Hab. China. 
Very closely allied to 7. modestus, but distinguished by 
a more square form, while the scales are curiously ex- 
panded. 
Fig. 54. (Mus. Cuming.) 
The shell here figured proves to be a fine specimen of 
T. columellaris, described at Plate VII. Sp. 33. The 
species may be readily distinguished by a conspicuous 
verdigris-blue callosity round the columella. 
Species 55. (Mus. Cuming.) 
TRocHUS sPINULOSUS. Troch. testd imperforatd, de- 
presso-conoided, lutescente-spadiced ; anfractibus con- 
vexo-declivibus, oblique rudé granoso-corrugatis, ultimo 
ad marginem tuberculis spiniformibus erectis biseriatim 
armato ; basi planiusculd, densé muricato-squamatd ; 
apertura parva. 
THE spineD Trocnus. Shell imperforate, depressly 
conoid, yellowish-bay ; whorls convexly sloping, ob- 
liquely rudely granosely wrinkled, last whorl armed 
at the margin with two rows of erect spine-like 
tubercles; base rather flat, densely minutely prickly 
scaled; aperture small. 
Lamarck, Anim. sans vert. vol. ix. p. 127. 
Hab. Philippine Islands. 
The base of this species is armed with two rows of 
December, 1861. 
