32 



18. AcHATiNA Dysoni, Pfr. Ach. testd oblongo-conicd, tenuissimd, 

 glabrd, pellucidd, nitidd, lutescenti-corned ; spird conicd, obtusius- 

 culd; suturd simplice ; anfractibus 5 convexiusculis, ultimo ^ lon- 

 gitudinis sub<equante, deorsum subdilatato ; columelld arcuatim 

 tortd, subcallosd, vix truncatd; aperturd angustd, acuminato- 

 oblongd, basi rotundatd ; peristomate simplice, tenui, margine 

 dextro medio antrorsum dilatato. 



Long. 9^, diam. 4 mill. 



From Hondūras ; found under decayed leaves by Mr. Dyson. 



19. AcHATiNA Sandwicensis, Pfr. Ach. testd ovato-conicd, ob- 

 ligue striatd, subopacd, sordide corned ; spird conicd, obtusiusculd ; 

 suturd lined impressd marginatd ; anfractibus G\ planulatis, ultimo 

 A longitudinis vix superante ; columelld arcuatd, pUcato-tortd ; 

 aperturd latd, semiovali ; peristomate simplice, margine dextro 

 obtuso, columellari subreflexo, appresso. 



Long. 7, diam. 3į mill. 



From the Sandwich Islands (B. W. Tucker, Esq.). 



20. Achatina (Glandina) Sowerbtana, Pfr. Ach. testd ovato- 

 fusiformi, tenuiusculd, diaphand, longitudinaliter con/ertim plicatd, 

 striis spiralibus, in<equaliter distantibus decussato-granulatd,fulvo- 

 rubelld, strigis remotis, fuscis ornatd ; spird conicd, apice acutd ; 

 suturd albo-marginatd, crenulatd ; anfractibus lį planiusculis , 

 ultimo ^ longitudinis subeEquante ; columelld arcuatd, basi abrupti 

 truncatd ; aperturd acuminato-oblongd ; peristomate simplice, mar- 

 ginibus callo tenui junctis , dextro repnndo. 



Long. 88, diam. 38 mill. 



From Totontepec, Mexico ; on decayed vegetable matter. 



21. Achatina (Glandina) isabellina, Pfr. Ach. testd fusi- 

 formi-oblongd, tenui, nitidd, sub lente spiraliter confertim striatd, 

 pellucidd, isabellina ; suturd lined impressd marginatd ; anfracti- 

 bus 6 convexiusculis, ultimo spird conicd, obtusd vix breviore ; 

 columelld obliqud, strictiusculd, supra basin aperturce elliptico- 

 oblongee breviter truncatd ; peristomate simplice, obtuso. 



Long. 26, diam. medio 10 mill, 



From Mexico ; found in decayed trunks of trees. 



22. Achatina (Glandina) Tortillana, Pfr. Ach. testd suhfusi- 

 formi-ovatd, soliduld, striis longitudinalibus, confertis regulariter 



sculptd, nitidd, pellucidd, pallide corned, maculis et strigis opacis, 

 lactescentibus irregulariter signatd ; suturd submarginatd ; anfrac- 

 tibus 7į convexiusculis, ultimo spiram conicam, obtusam, vix supe- 

 rante ; columelld f ortiter arcuatd, supra basin apertura elliptico- 

 oblongte abrupte truncatd; peristomate simplice, obtuso, margine 

 dextro medio subdilatato. 



liOng. 20, diam. medio 8 mill. 



From Tortilla, Central America; in damp places. 



23. BuLiMUS auratus, Pfr. Bul. testd subobtecte perforatd, ob- 

 longo-turritd, tenui, longitudinaliter subtiliter striatd, pellucidd, 



