CONUS.— Plate XLV. 



under an apprehension that the figure alluded to could 

 not strictly be referred to the Conus vexillum, and con- 

 clude thus : — " It is, however, exceedingly difficult to say 

 what species that figure is intended to represent." I 

 have now completely identified the Conus mutabilis of 

 the ' Conchylieu Cabinet' as a very distinct species, and 

 have the pleasure of representing specimens of different 

 varieties from the collections of Mr. Stainforth, Mr. 

 Gray, and the British Museum. 



Species 250. (Mus. Cuming.) 



Conus suturatus. Con. testd subabbreviato-turbinatd , 

 solidiusculd, hevigatd, basim versus sulcata, sulcis la- 

 tiusculis, distantibus ; alba, basi pallide rosacea; spird 

 plano-convexd, profundi' suturaid, spiraliter liratd et 

 striata, apice minuto, acuto. 



The sutured Cone. Shell rather shortly turbinated, 

 somewhat solid, smooth, grooved towards the base, 

 grooves rather broad, distant ; white, stained with 

 pale rose at the base ; spire flatly convex, deeply 

 sutured, spirally ridged and striated, apex very 

 small, raised. 



Reeve, Pro. Zool. Soc, 1844. 



Hob. ■ ? 



There is a very peculiar character on the spire of this 

 shell ; the sutures have an unusually decided appear- 

 ance, in consequence of a small ridge which each whorl 

 throws up at its junction with the preceding. 



Species 251. (Mus. Adamson.) 



Conus crepusculum. Con. testd turbinatd, tenuiculd, 

 superne lavi, infra exiliter granulatd, granulis seria- 



tim digestis, basim versus gradatim majoribus ; lu- 

 teold, basi violaced ; spird convexd, apice mucronato, 

 elato, anfractuum marginibus subtilissime obsolete 

 nodulosis. 



The twilight Cone. Shell turbinated, rather thin, 

 smooth at the upper part, faintly granulated be- 

 neath, granules set in rows, increasing gradually 

 in size towards the base ; pale yellow, base violet ; 

 spire convex, apex pointed, raised, edge of the 

 whorls very finely obsoletely noduled. 



Reeve, Pro. Zool. Soc, 1843. 



Hob. ? 



This shell is allied in some measure to the Conus 

 lividus ; it is, however, of much lighter growth, there is 

 no indication of any colour in the aperture, and the 

 spire is obsoletely very finely beaded. 



Species 252. (Mus. Stainforth.) 



Conus tristis. Con. testd turbinatd, subfusiformi, lavi- 

 gatd, basim versus sulcata ; albd ; spird convexo- 

 elatd, spiraliter striata", anfractuum marginibus subti- 

 lissime nodulosis, anfractus ultimi nodulis obsoletis, 

 apice mucronato. 



The sad-looking Cone. Shell turbinated, slightly fu- 

 siform, smooth, grooved towards the base ; white ; 

 spire concavely raised, spirally striated, edges of 

 the whorls very finely nodulous, nodules of the 

 last whorl obsolete, apex pointed. 



Reeve, Pro. Zool. Soc, 1843. 



Hub. ? 



There is no indication of any colour in this shell ; it 

 is of rather light structure. 



