46 . TROCHUS. 



A greenish brown species, witli regular transverse rows of headed 

 ridges, and with the Literal outlines convex ; the color is a uniform 

 greenish bi'own. (Adams.) 



P. (Infundibulum) ^mulans a. Adams. 



P. testa depresso-conica, pseudo-umbilicata, albida, rufo-fusco 

 radiatim picta ; anfr. planis, cingulis transversis granulorum ornatis, 

 serie bituberculata ad suturas ; basi eonvexiuseulo, rubro radiatim 

 ornata, ac cingulis confertis, concentricis crenulatis instructo ; regione 

 umbilicali infundibuliformi, alba ; columella superne tortuosa, mar- 

 gine simplice. (A. Ad. P. Z. S. rSo4 j), 182.) 



China. (Mus. Cuming). 



A handsome species, variegated with broad radiating red-brown 

 markings, and with a conspicuous double row of tubercles at the 

 sutures. (Adam.i). 



P. (Infundibulum) concinnum A. Adams. 



P. te.'^ta conica, pseudo-umbilicata, lutescente, fusco-vividoque 

 variegatim picta ; anfr. planiusculis, cingulis transversis granulorum, 

 cingulis distantioribus, interstitiis liris moniliformibus ornatis; anfr. 

 ultimo ad peripheriam angulato; regione umbilicali infundibuliformi, 

 albida, basi laevigata, cingulis concentricis articulatis ornata ; colum- 

 ella recta, margine simplice. (A. Ad., P. Z. S. 1854, p. 132). 



China Seas (Mus. Cuming). 



This is a small but handsomely variegated species, with the false- 

 umbilicus infundibuliform and of a whitish color, and with the base 

 of the shell adorned with concentric zones articulated with dark 

 brown. (Adams). 



Infundibulum californicum A. Adams. 



I. testa dej^resso-conica, pseudo-umbilicata, albida, viridi rufoque 

 variegata ; anfr. planis, supra angulatis, ultimo angulato, cingulis 

 tuberculorum subdistantium multiformium ornata ; interstitiis long- 

 itudinaliter oblique costatis, basi concava, cingulis confertis crenula- 

 tis insculpta ; regione umbilicali infundibuliformi, vividi, linea alba 

 elevata cincto ; columella su])erne tortuosa tuberculata. 



(A. Ad. p. Z. S. 1851, p. 153). California, 



