﻿CYLINDRELLA.— Plate 1. 



The large Ctlindrella. Shell large, cylindrical, 

 broad, finely striated, reddisli-bro-mi, suture 

 bordered witli whitish ; permanent whorls eight, 

 high, the four lower nearly equal, last con- 

 tracted, angular, deeply notched ; aperture 

 large, broadly subovate ; columella rather 

 straight. 



Pfeiffek. Proc. Zool. Soc. 1860, p. 130. 



Hah. Mexico. 



Much more cylindrical than the preceding, and 



more finely sculptured. 



Species 5. (Mus. Brit.) 



Cylindrella aeistispioa. Cyl. testa solidd, sulpijra- 

 mldatd, infra medium timiidd, fitsco-olivaced, 

 fuseo-mbescenti strigatd, regulariter striatd, su- 

 penie contractd, medio et infra suhventricosd ; 

 anfraatihus permanentihus sexdecenis, depressis, 

 ultimo contracto, rimato ; aperturd sribrotundd, 

 marijviie crasso, rotundo, columelld subplicatd. 



The corn-spike Ctlindrella. Shell solid, rather 

 pyi-amidal, tumid below the middle, olive-brown, 

 striped with reddish-brown, regularly striated, 

 contracted above, rather ventricose in the middle 

 and below ; permanent whorls sixteen, depressed, 

 last contracted, notched ; aperture roundish, 

 margin thick, round, columella slightly plaited. 



Pfeikfer. ? MS. Mus. Brit. 



Hah. _? 



Species 6. (Mus. Brit.) 

 Ctlindrella esimia. Cyl. testd solidd. cylindried, 

 rvctigond, Icevigatd, grised, supra suturam fascia- 



fulvd, maculis rubris articulatd, infra suturam 

 fascia -fidvd, immaeulatd, ornatd ; anfradilus 

 j^ennanentihus octonis, ultimo angulato, svhcon- 

 tracto ; aperturd subtrapezoidd. 



The exquisite Ctlindrella. Shell solid, cylindrical, 

 straight-sided, smooth, grey, ornamented above 

 the suture with a fulvous band articulated with 

 red spots, and under the suture with a spotless 

 fnlvous band ; permanent whorls eight, last 

 angular, rather contracted ; aperture subtrape- 

 zoidal. 



Pfeiffek. Proc. Zool. Soo. 1858, p. 23. 



Hub. Haiti. 



Species 7. (Mus. Brit.) 

 Ctlindrella Gheisbeeghti. Cyl. testd mngud, solidd, 

 fumoso-fttscd, medio et infra laid, bulbosd, snperne 

 contractd ; sulcis irregula/riter undatis rugatd ; an- 



fraclihns i.rrnutuentihn. scnhrmis. >^i,'i,.r!vr!hu.< 



superiorem aperttinvfoniicatu; culumcUd miiplicatd. 



Gheisbreght's Ctlindrella. Shell large, solid, 

 smoky-brown, broad and bulbous in the middle 

 and below, contracted above, wrinkled with 

 irregular, wavy grooves ; permanent whorls 

 sixteen, upper six narrow, others gradually 

 increased, last contracted below, angular, notched, 

 vaulted above the upper margin of the aperture ; 

 columella single-plaited. 



Pfeiffee. Mon. IV. p. 694. 



Sab. Chiapa, Mexico. 



A large shell of remarkably bulbous form and 



wrinkled texture. 



