COELOCENTRUM, SECTION LIOCENTRUM. 49 



<J. CHAMPIONI v. Martens. PI. 9, figs. 12, 13, 14, 15. 



One broken specimen somewhat intermediate between C. 

 gigas and C. clatkratum; 14 mm. in diameter, of a yellowish- 

 grey color, white at the suture ; costulae more feeble and numer- 

 ous, above 100 in the whorl before the last, the interstices of 

 the same width, or scarcely twice as broad, spiral stria very 

 faint, not crossing the costulre (fig. 15). The 3-4 terminal 

 whorls of equal diameter. An angular line, and beneath it a 

 very shallow furrow at the base of the last whorl, more feeble 

 near the aperture. Costuhe at the outside of the columellar 

 axis very faint. Aperture protracted 4 mm. beyond the 

 suture, obliquely oval, angulate above and below, 13y 2 mm - in 

 oblique height and 11 mm. in breadth; peristome thickened, 

 expanded, white, (v. Martens.) 



W. Guatemala: Cerro Zunil (Champion). 



C. championi v. MART., Biologia, p. 269, pi. 16, f. 26. 26 a-c 

 (November, 1897). 



C. CLATHRATUM v. Martens. PI. 9, figs. 8, 9, 10, 11. 



More turrete than fusiform, in this respect resembling the 

 preceding (C. championi}, but of a paler yellowish-grey 

 color, the costulae also feeble and somewhat more oblique in 

 the lower whorls, 87-90 in the whorl before the last, also some- 

 what unequal, the interstices mostly twice as wide as the cos- 

 tulce ; the spiral striae fine, traversing not only the interstices, 

 but also the costulae themselves, and giving to them an irreg- 

 ular, waved appearance. Whorls scarcely convex, 10 remain- 

 ing in the adult shell, the terminal 3-4 of equal diameter, the 

 last at the base with a very feeble angular line, which quite 

 disappears near the aperture. Umbilical rima arcuated. Cos- 

 tulae of the columellar axis very faint, scarcely visible. Aper- 

 ture protracted 4!/o mm. beyond the suture, obliquely oval, 

 somewhat angulated above and below; peristome thin, a little 

 expanded. Length of the truncate shell 54, diameter 14 mm. ; 

 aperture 12 long, 9 broad, (v. Mart.} 



W. Guatemala : Hacienda Buenavista in Upper Cholhuitz, 

 Costa Cuca, at an elevation of 3500 feet above the sea. (0. 

 Stoll.) 



