118 MR, G. B. SOWERBY, JUN., ON [Jan. 17, 
Although a shell of no very striking form, and having characters 
in common with several, there is no species to which I can very 
closely compare it. The spire is rather like that of C. punctatus, 
Hwass ; but it is a much more slender shell, and the painting is quite 
of a different character. 
Conus SEMIVELATUS, sp. nov. (Plate V. fig. 3.) 
Shell pyriform, plum-colour, white at the top ; spire short ; whorls 
slightly convex, smooth ; last whorl rounded at the upper angle, 
then convex, and contracted at the base. Aperture moderate, purple 
within. Length 16, width 10 millim. 
Hab. Red Sea. 
A remarkable little species, of a very unusual colour. The whole 
of the spire and just the top of the last whorl is plain white, and 
the rest of the shell of a uniform plum-colour. 
The specimen is in perfect condition; and its operculum, which 
is preserved, is very small and thin. Mr. Melvill gave the shell 
the above name in manuscript in his collection. I have seen two 
other specimens, varying very little from the type. 
Conus DIANTHUS, sp. nov. (Plate V. fig. 4.) 
Shell rather abbreviately conical, pale pink, with irregular patches 
of orange; transversely rather distantly ribbed, longitudinally 
faintly striated, strize undulating across the ribs and forming thereon 
minute scales ; ribs closer, stronger, and smoother towards the base ; 
spire rather short, regularly conical ; whorls 10, flatly sloping, un- 
dulated at the angle, last two or three with a concave depression 
just above the angle ; the last whorl has the upper angle obscurely 
coronated, sides nearly straight, or very slightly convex. Aperture 
rather narrow, a little wider towards the base, pink within, Lip 
very little sinuated at the upper extremity. Length 28, width at 
the angle 13 millim. 
An interesting species of peculiar sculpture, the waved strie 
crossing the ribs giving them more of a scaly than of a nodulous 
appearance, 
Conus wWILMERT, sp. nov. (Plate V. fig. 5.) 
Shell fusiform, pale. brown, transversely ribbed, ribs strong, 
rounded, smooth, equal in width to the interstices, which are crossed 
with thread-like strie ; spire very elevated, whorls 11, flatly sloping, 
with three deep-cut spiral grooves, keeled at the angle, a spiral cord 
against the suture ; last whorl with the upper angle acutely keeled, 
sides sloping, and attenuated towards the base. Aperture narrow. 
Lip ees sinuated at the upper extremity. Length 21, width 8 
millim. 
Hab. Port Blair, Andaman Islands (Lieut.-Col. Wilmer). 
Much narrower than C, acutangulus (Ch.),with a very elevated spire. 
MITRA MELVILLI, sp. nov. (Plate V. fig. 7.) 
Shell cylindrically fusiform, encircled throughout with deeply 
