TROCHUS. 69 



T. IMBRICATUS. Conical -pyramidal^ longi- 

 tudinally ribbed obliquely, whitish ; ribs rather 

 prominent at the margin of the whorls, which 

 project in the lower part and are sub-imbricated; 

 beneath plano-convex, concentrically wrinkled. 

 2 ... If . W. 29. 104. 



T. ZTZYPHiNUS. Conic, whorls flat, and 

 distantly striated transversely, with a thick pink 

 and white articulated belt margining each ; livid 

 or fulvous white, clouded longitudinally with a 

 darker colour ; base flattish, imperforate ; pillar 

 smooth; mouth pearly. B. 1. W. 29. 94. 



T. CONULUS. Conic, smooth, shining, golden, 

 or yellowish red, painted with chestnut ; whorls 

 flattish, margined ; upper ones granulated ; be- 

 neath, size, and aperture as the last. W. 29. 93. 



T. GRANATUS. Vcntricosc conic, with trans- 

 verse granulated striae, whitish, with longitudinal 

 irregular scarlet streaks ; summit acuminated ; 

 base convex and oblique ; diam. 1 f . W. 29. 97. 



T. IRIS. Obliquely conic, glabrous, greyish 

 violet, with chestnut longitudinally flexuous lines, 

 iridescent beneath the outer coating ; whorls 

 rather convex, the last sub- angular ; aperture very 

 dilated; no umbilicus, l^^g • • • 1 • W. 30. 113. 



T. UMBiLiCATUs. Orbicular depressed, trans- 

 versely striated, olive ash -colour, umbilicated, 

 marked with rather broad, somewhat oblique, red- 



