1875.] MR, G. B. SOWERBY ON NEW SPECIES OF SHELLS. 127 
costata, late excavata, supra columellam profunde umbili- 
cata; apertura subquadrata, intus lirata; columella noduloso- 
plicata. 
Alt. 40, maj. lat. 30 mill. 
Hab. Moluccas. 
A Trochus (section Polydonta), rather solid, fleshy white, with 
longitudinal reddish brown flames; whorls 10 in number, flatly con- 
vex, deeply excavated at the suture, encircled spirally with strong 
granular ribs, between which the interstices are deep and plicated ; 
spire acute ; base rather convex, with rather a broad excavation, and 
a deep umbilicus above the columella; aperture nearly square, 
ridged within ; columella furnished with nodulous plaits. 
Obs. A very beautiful species, of striking character. The only 
other specimen of it that I have seen is a smaller one, which Miss 
E. Farre presented to the British Museum, in the early part of the 
year 1871. The roughly granular ribs and the deeply excavated 
suture are its chief characters. 
4, ZIZIPHINUS MULTILIRATUS. (Plate XXIV. fig. 10.) 
T. testa abbreviato-conica, flavescenti-viridula, rufo flammulata ; 
anfractibus 7, convexis, obsolete biangulatis, spiraliter crebre 
grano-liratis ; basi convera ; apertura subcirculari; columella 
levi, callosa, subarcuata ; labio externo tenui, simplici. 
Maj. diam. 18, alt. 17 mill. ; apert. diam. 9 mill. 
Hab. Cape of Good Hope. 
An abbreviately conical Ziziphinus, of. a yellowish-green colour, 
with red flames; whorls 7 in number, convex with two very slight 
angles, spirally closely encircled with granular ridges; base convex ; 
aperture nearly circulir; columella smooth, callous, slightly arched ; 
outer lip simple and thin. 
Var. 8. Costis rufo-articulatis, vix granosis (Plate XXIV. fig. 11). 
In this variety, though evidently not specifically distinct, the 
ridges are nearly smooth, and only a slight tendency to granulation 
may be observed on the upper part of the whorls. 
5. Mirra FLEXILABRIS. (Plate XXIV. fig. 4.) 
M. testa pyramidata, lutea, aurantiaco bizonata, polita, transver- 
sim obsolete striata; spira subobtuse acuminata; basi leviter 
contracta ; anfractibus 6, plano-convexis ; apertura elongata, 
superne attenuata; columella quinqueplicata; labio externo 
simplict, superne inflecto; intus levi. 
Long. 13, maj. lat. 4; anfr. ult. maj. long. 9; apert. long. 7, 
maj. lat. 13, min. 3 mill. 
A small pyramidal Mitra, of a pale yellow colour with two orange 
zones, smooth, very faintly striated spirally ; spire rather obtusely 
acuminated ; base slightly contracted; whorls 6, flatly convex ; 
aperture long, attenuated above; columella five-plaited ; outer lip 
simple, inflected above ; interior smooth, 
Hab. Mauritius. 
Specimen from the collection of Dr. Prevost. 
