45§ Zuuluyical Society. 



-iV breviter soluto ; umbilico mediocri, pro/undo, angulo cariniformi 

 > cincto ; aperturd suhverticali, ovato-subcirculari ; peristomate con- 

 tinuo, simplice, recto, margine columellari expansiusculo. — Oper- 

 culum duplex, lamind externd testaced, b-spiratd, marginibus 

 anfractuum liberis, internd pland, cartilagined. 

 Diam. maj. 11, min. 9f, alt. 9f mill. 

 Hab. Honduras. 



15. Cyclostoma fasciculare, Pfr. C. testd perforatd, acumi- 

 nato-ovatu, soliduld, confertissime costulato-striatd, vix sericed, 

 griseo-corned ; spird conicd, acutiusculd ; suturd costularumfasci- 

 culis crenatd ; anfractibus 5, convexiusculis, ultimo rotundato, basi 

 spiraliter sulcato ; aperturd vix obliqud, ovali ; peristomate sim- 

 plice, recto, acuta. — Operculum terminale, testaceum, planum, 

 paucispirum, anfractibus oblique striatis. 



Long. 12, diam. 8 mill. 

 Hab. ? 



16. Cyclostoma Guatemalense, Pfr. C. testd perforatd, ob- 

 longd, soliduld, subtruncatd, striatuld, olivaceo -fused; spird con- 

 vexiusculo-turritd ; anfractibus 6, parum convexis, ultimo angus- 

 iiore, antice descendente, breviter soluto, basi, circa perforationem 

 apertam, compresso, nee carinato ; apertxird verticali, subcirculari ; 

 2)eristomate libero, albo, duplice : interno continuo, vix porrecto, 

 externa dilatato, horizontaliter expanse, supra petforationem 

 excise. — Operculum ? 



Long. 24, diam. 8 mill. 

 Hab. Vera Paz in Guatemala. 



1 7. Cyclostoma canescens, Pfr. C. testd subperforatd, oblango- 

 turritd, truncatuld, solidd, lineis longitudinalibus et spiralibus 

 elevatis regulariter clathratd, parum nitidd, griseo-albidd; spird 

 elangatd; suturd tuberculis confertis, albis crenatd; anfractibus 

 superstomate 7, vix convexiusculis, ultimo basi attenuata. circa 

 perforationem ohsoletam distinctius spiraliter sulcato; aperturd 

 verticali, angulato-ovali, intus fusca-carned ; peristomate duplice : 

 interna vix porrecto, externa undique brevder expanse, superne 

 angulato, anfractui penultimo breviter adnata. — Operculumi 



Long. 20, diam. 7 mill. 

 Hab. ? 



18. Cyclostoma viOLACEUM, Pfr. C. testd subobtecte perforatd, 

 ovato-turritd, truncatd, soliduld, lineis elevatis spiralibus et con- 

 feriioribus longitudinalibus oblango-granulatd, haud scah'd, nan 

 nitente, saturate vialaced; spird turritd, truncatd; anfractibus 

 superstomate 4l\, convexis, ultimo rotundato ; aperturd subverticuli, 

 ovali ; peristomate simplice, alba, continue, margine dextro sub- 

 incrassata, anguste angulatim patejite, columellari in laminam 

 sijiuasam, perfaratienem occultantem, fiec claudentem, dilatato. — 

 Operculum immersum, testaceum, planum, cinereum, paucispirum. 



Long. 20, diam. 1 1 mill. 

 Hab. ? 



