136 CANTHARIDUS. 



above the sutures. Generally the whorls of the spire are flat. 

 (Fischer.) 



C. RUTILUS A. Adams. PI. 34, fig. 8. 



Shell imperforate, conical, solid, shining, fawn-colored or light 

 yellowish-olive, with numerous narrow oblique flexuous reddish 

 longitudinal lines; the upper whorls of the spire more or less 

 marked with white and pink or olive spots arranged spirally ; spire 

 conic, straight sided ; apex acute, white or buff; sutures linear, be- 

 coming a trifle impressed around the last whorl ; whorls about 7, 

 planulate, densely spirally striate, the strise stronger on the base ; 

 penultimate whorl a trifle projecting above the suture ; body-whorl 

 obtusely subangular at periphery ; aperture triangular-ovate, outer 

 lip arcuate above, green-marginate just within the edge, this rim 

 followed by a band of opaque white which is deposited thin, is not 

 more than H mill, broad, and does not extend to the upper angle 

 of aperture ; within this the mouth is very brilliantly iridescent, 

 green. The columella is vertical, pearly, ending in an acute, com- 

 pressed denticle. The parietal wall has a thin deposit of brilliantly 

 iridescent Prussian blue nacre. Alt, 17, diam. 10 mill. 



Australia. 



Eleuchus rutilus A. AD. P. Z. S., 1851, p. 171. 



This form is allied to C. apicinus Mke. ; resembling that species 

 in the numerous reddish oblique lines. The upper whorls have a 

 different color-pattern however, and the species is much less elevated, 

 more conical. The aperture has a more triangular con tour than any 

 other species, although some forms of C. iriodon approach it some- 

 what. 



C. PORCATUS Philippi. PI. 34, fig. 31. 



Shell elate-conic, subperforate, yellowish-green, golden-shining 

 whorls plane, sculptured with five rounded ridges, equalling the 

 interstices, the last angulated ; base elevated ; aperture higher than 

 wide ; columella vertical, entire. (Philippi.) 



The shell is elevated-conical, nearly steeple-shaped, thin, imper- 

 forate, consisting of 7 to 8 whorls. These are perfectly flat, the 

 last passing into the much elevated base in an obtuse angle, and 

 two-fifths the total height. The sculpture consists upon the upper 

 surface of five rounded, slightly elevated girdles as wide as the 

 interstices; upon the base of six. The aperture is rather quad- 

 rangular, higher than broad ; the outer lip simple, [thin, the colu- 



