14 EUCALODIUM. 



umellar fold and umbilical chink show no especial differences 

 from E. walpoleanum, to which E. grandis is closely related. 

 The riblets are closer and weaker than in E. blandianum. 



E. SPLENDIDUM (Pfeiffer). PL 6, figs. 33, 34, 35, 38, 39; 

 pi. 8, figs. 19, 23. 



Shell rimate, turreted, broadly truncate, rather solid, with 

 oblique hair-like riblets, a little glossy, fleshy- violaceous ; sut- 

 ure with a white hair-line, crenulated. 8 to 8y 2 whorls re- 

 maining, moderately convex, the last with a very obsolete 

 thread-like carina, shortly free in front. Columella subpli- 

 cate. Aperture nearly vertical, obliquely oval; peristome 

 continuous, white, narrowly reflexed, subangular above. 

 Length 46, diam. 15 mm. ; apert. with perist. 12 mm. long, 

 10 wide. (P/r.). 



Zacatepec, State of Oaxaca, in south-central Mexico 

 (Boucard). 



Cylindrella splendida PFR., P. Z. S. 1860, p. 139, pi. 50, f. 

 1; Malak. Bl. viii, 1861, p. 80; Monogr. vi, p. 377; Novit. 

 Conch., p. 432, pi. 97, f. 1, 2. SOWERBY, Conch. Icon. xx. pi. 

 1, f . 3. Eucalodium splendidum CROSSE & FISCHER, Moll. 

 Mex., i, p. 372, pi. 15, f. 3, 3a. STREBEL, Beitr. iv, p. 69, pi. 

 5, f. 17. von MARTENS, Biol. Centr. Amer. Moll., p. 261. 



The figures given by Pfeiffer (pi. 6, fig. 34), Sowerby and 

 Strebel represent the shell as more inflated than E. grande, 

 from which it differs chiefly in the much more widely spaced 

 striation. The figures of Crosse and Fischer resemble the 

 specimen before me, which is probably one of the original 

 lot (pi. 6, fig. 35). The axis is noticeably sigmoid within each 

 whorl, and is moderately stout. It is hollow, showing a min- 

 ute, acutely ovate orifice at the apical truncation (pi. 8, fig. 

 23). The narrow, acute riblets of the surface are far more 

 widely spaced than in E. grandis, and as in that species, a very 

 minute sculpture of vertical wrinkles not parallel with the 

 riblets, may be seen in the intervals, chiefly below the sutures 

 (pi. 8, fig. 19). 



