EUCALODIUM. 11 



E. sumichrasti seems to be intermediate between E. blan- 

 <J id it urn and E. decollation Nyst, of which E. ghiesbregliti is 

 very likely a synonym. It is distinguished from E. Nan- 

 dianum by the less tapering spire, natter whorls, less visible 

 and weaker malleation of the shell, which at the same time is 

 more solid; the costulae are finer, more numerous and fili- 

 form; -the aperture is angularly rounded and milk white, the 

 peristome is pure white and not whitish, and finally, the col- 

 umellar margin is wholly without a fold. It differs from 

 E. decollation by the olive-green cuticle, distinct malleation 

 of the last two whorls, finer costulation and less irregular aper- 

 ture (C. & F.). 



E. WALPOLEANUM Crosse & Fischer. PI. 4, figs. 1, 2, 3, 4; 

 pi. 8, fig. 22. 



Shell imperforate, arcuately rimate, cylindric-tapering, 

 moderately solid, brownish-yellow with indistinct darker 

 streaks or reddish-brown. Surface somewhat glossy, sculp- 

 tured with regular thread-like striae separated by much wider 

 intervals, which are closely and finely wrinkle-striate spirally, 

 the spirals sometimes passing over the stria also. The spire 

 tapers above, but several later whorls are of about equal dia- 

 meter; apex truncate. Whorls remaining about 10 (9 to 12), 

 convex, the last having the base defined by a small carina; 

 shortly free in front, aperture somewhat oblique, ovate, angu- 

 lar above, white or reddish inside. Peristome white, continu- 

 ous, narrowly reflexed throughout. Columella oblique, a little 

 excavated below. Internal column slender, a little sinuous. 

 Length 75, diam. 18 mm. 



Southeastern Mexico: Woods of Palenque, Chiapas (type 

 locality, Morelet) ; Chiapas (Boucard). Northern Guate- 

 mala: Mountains of Vera Paz (Bocourt) ; Golan (Salvin) ; 

 woods between Tactic and Tamahu (Sarg.). 



Eucalodium walpoleanum C. & F., Journ. de Conchyl. 1872, 

 p. 75; Moll. Mex. i, p. 377, pi. 14, f. 6, 6cr, v. Mart., P. Z. S. 

 1875, p. 648; Biol. Centr. Amer., Moll., p. 259. -- STREBEL 

 Eeitrag, iv, p. 67, pi. 7, f. 1 a, b; pi. 14, f. l2.Cylindrella 

 walpolei SOWB., Conch. Icon, xx, pi. 6, f. 51. -- Cylindrella 



