Hab. in Columbia. (Salango.) 



Tliis pretty species belongs to that group of Helices nhich so much 

 resemble Planorhis. — W. J. B. 



Genus Cauocoi.la. 

 Carocolla globosa. Car. testd orbiculata, suhcaslaned, infri 

 turgidii, anfractu basnli subangulato, scnbriusculo ; labro uni- 

 dentato, rejiexo, albo, dcnte magno ; apetiuru Jiisco-casianeit, 

 umbilico mediocri : long. į^, Int. 2į- poli. 

 Hab. in sylvis InsulfE Tumaco, Columbiae Occidentalis. 

 An obscure band runs round the angle of the basai vvborl. Ex- 

 posure to the weatber causes the chestnut colour of the sheli to 

 acquire somewhat of a blueish cast. — \V. J. B. 



Carocolla ouAURinENTATA. Car. testd crbictdatJ, fusc I, an- 



fructu, bnsali turgido, angulato, scabro ; labro subreflexo, albo, 



intus tridentato ; nperturd foscd, dente albo folcato armatd ; 



umbilico magno : long. -Į, lat. i poli. 



Hab, in sylvis Americse Centialis. (Woods near the Gulf of 



Dulce.) 

 This species approaches nearly to Car. Labijrtnthus : the white 

 elevated tridentated lip is continued round the aperturc: the single 

 white falcated tooth is not attached to the lip, but rises vvithii) it 

 from the lower surface of the basai vvhorl. — W. J. B. 



Genus Bulinus. 

 * Labio externo tenui, acuto. 

 BuLiNus BnoDERiPii. Bul. testd ovato-pi/ramidali, tenui, nlbi- 

 cante, nigro J'ulvoque elegantissime viaculatd et variegatd; ari' 

 Jractibus quinque, rupide crescentibus, paullulum venlricosis ; 

 sidiird subconfluenti ; superjicie granui is minimis, longituditialiter 

 seriatim dispositis : long. \į, lat. l-^ jjoll. 

 Hab. in fissuris rupium prope Copiapo Chilensium. 

 Var. testą nana, albicante-rosacež, laeviore, maculis nigris ma- 

 joribus et seriatim dispositis 



Hab. in fissuris rupium prope Iquiqui, in PeruviA, 

 The dwarf variety was iound at an elevation of 2500 feet above 

 the level of the sea. — G. B. S. 



BuLiNUS CoTuRNix. B?d. testd globoso-pyramidali, anfractibus 

 tįuatuor ad quinque, ventricosis, albicantibus, fusco macvlatis et 

 variegatis ; suturd, distinctd; superficie tenuisshne transversini 

 striatd; umbilico parvo : long. lį-, lat. ^ poli. 



Hab. sub lapides in aridis apud Huasco Chilensium. 



From the preceding species the present is easily distinguished by 

 its more globular form and the pos^ession of an umbilicus. — G. B. S. 



BuLiNUS CoauiMBENsis. Bul. tcstd Icvi, ovato-JusiJormi,J'ragili, 

 subdiaphand, albido^iiscd, maculis strigiscue nigro-foscis spnrs.i ; 

 anfractibus sex, longiiiidinaliter striatis, tdtimo maximo ; lubro 

 acuto: long. 1^"^, Int. -^^r poli. 



Hab, ad Coquimbo in muntibus. 



