TROCHUS. 69 



fourth granule In-own ; aperture rhoniboidal, lip smooth within ; col- 

 umella oblique, solute above, terminating below in a strong tooth, 

 margin reflexed. (Fhilippi.') 



Allied to T. pharaonius. The shell is elevated conical, with a 

 rounded angle on the periphery, the base elevated but not rounded. 

 The whorls are about 8, the uppermost forming a rosy apex, pretty 

 smooth, the following elegantly encircled ])y series of granules, act- 

 ually 12 in number, but only 4 shown upon the upper whorls, the 

 suture running upon the middle of the fifth. The interstices are 

 somewhat narrower than the ridges, and under a lens are seen to be 

 finely, densely, oliliquely striate. The first and second rows of 

 granules are \)a\e flesh-colored ; the rest have regularly 3 white 

 granules, then a brown one. The aperture is rhombic, with rounded 

 outer portion. The outer lip is thickened within, but simple, 

 smooth ; the columella oblique, solute above, its edge reflexed, below 

 ending in a strong tooth, near which is a denticle. The false- 

 umbilicus is rather narrow, with smooth margin. 

 Alt. 8i, diara. 7^ mill. (Philippi.) 



Habitat unknoivn. 



T. amcenvs Koch in Philippi, Conchy!. Cab., p. 100, t. 16, f 1. 



I have seen nothing in nature or the books like this form. The 

 lack of folds within the outer lip is difl'erent from the numerous 

 species of Clanculus having similar elevated conical form. 



T. STiGMATARius A. Adams. PI. 15, fig. 53 ; pi. 19, figs. 5-8. 



This is a globose- conoid, solid, false-umbilicate species, very 

 similar to T. clanguloides, but diflfering in the following characters: 

 It is more solid, more elevated, somewhat the shape of a Minie ball. 

 There are 6 to 7 whorls, the sutures somewhat impressed ; the penul- 

 timate is encircled by 6-8, the last whorl by 18 (more or less) gran- 

 ulose Yirx, every alternate rib of the upper surface and two or three 

 of the base roseus, articulated with dots of brilliant rose-red, the 

 ground-color faint pinkish or yellowish. The base is quite convex ; 

 the aperture tetragonal, contracted by teeth and the deflection of 

 the superior margin, which is straightened, bearing a strong tooth, 

 below which the outer and basal lips are well rounded, and bear, 

 within, a few plicse. The columella is short, very deeply entering 

 the profound, narrow umbilicus (much narrower than in T. clangu- 

 loides) ; anterior edge of the columella as in clanguloides; terminat- 

 ing below in a very large, heavy, trifid quadrangular tooth, much 



