CALLIOSTOMA. 335 



there is a group of lirulje, closer, smaller than those of the upper 

 surface ; the rest of the base is regularly granose-lirate. The spire 

 is longer and more elevated than in C. pundulatum, and more con- 

 cave in outline ; the apex is acute ; sutures very slightly impressed ^ 

 whorls about 9, flattened, the last subangular at the joeriphery ; 

 aperture rhomboidal, iridescent inside, columellar margin arcuate, 

 Avith a slight tubercle at base. Alt. 30, diam. 30 mill. 



New Zealand. 



T. ])ellucidus Val., Voy. de la Venus, Moll, t. 4, f. 2, 1846.— 

 Fischer, Coq. Viv., p. 70, t. 15, f. 2. — Zisiphmus granatus Chemn. 

 Reeve, Conch. Icon., f. 2 (not Tr. granatum Chemn. ,= C'. tigris 

 Mart.) 



More convex on the base than G. speciosmn, less rounded on 

 periphery, with longer spire than C. punctulatum ; very similar 

 to C. tigris, but differently colored, more carinated, with fewer series 

 of granules. 



C. SELECTUM Chemnitz. PI. 65, figs. 73, 74, 78. 



Shell large, conical, imperforate, solid, but rather thin, very pale 

 fawn-color, almost white, with elongated brown dots on the spiral 

 riblets. Upper surface with numerous delicate spiral closely granu- 

 lose riblets, numbering about 10 or 11 on the penultimate whorl, 

 more numerous on the upper surface of the last whorl because inter- 

 stitial lirulre are intercalated ; on the antepenultimate there are 5, and 

 on earlier whorls 3 granose lirae ; on the base there are distinctly 

 granose concentric lir?e in the middle, but toward the periphery the 

 lirse become smaller, narrower, less distinctly grained. The spire is 

 conical, its lateral outlines concave on the upper part ; apex acute ; 

 sutures scarcely discernable until the last whorl is reached. Whorls 

 8-9, flat, the last slightly convex above, obtusely angular at the 

 periphery, somewhat convex beneath. Aperture subrhomboidal, 

 oblique, pearly and iridescent within, the nacre showing by folds the 

 positions of the principal lirpe of the outside ; columella arcuate, 

 oblique, pearly, basal and outer lips crenulated at the edge. 



Alt. 50, diam. 57 mill. ; alt. 37, diam. 47 mill. 



Neio Zealand. 



TrocJms selectus Chemnitz, Conchyl. Cab. xi, p. 168, t. 196, f. 

 1896, 1897 (1795).— Kiener, Sp. et Icon. Coq. Viv., Tvochus, t. 39, 

 f. 1.— Philippi, Conchyl. Cab., p. 261, t. 28, f. 12.— f Ziziphinus 

 selectus Chem. Reeve, Conch. Icon., f. 1. — Z. selectus Chem. Hutton, 



