96 ANCEY : SHELLS FROM BOLIVIA AND BRAZIL. 



Diavi. 9:^, alt. 8J, alt. apert. ^\ mill. 

 Santa Cruz de la Sierra (Germain). 



I name this fine shell after my regretted friend, M. J. R. 

 Bourguignat, the well-known author, whose recent loss for con- 

 chology will be lamented by anyone who studies European and 

 African mollusca. 



Helicina fulva D'Orb. 



Originally discovered in Bolivia by d'Orbigny, but actually 

 detected also in Matto-Grosso. The characters of this shell 

 appear to be constant, the only variation being a more or 

 less elevated spire. The operculum is reddish and rather thick. 



Helicina lirifera Anc, n. sp. 

 Testa acute carinata, subleniiciilaris, solidi/la, fi/lvo-castanea, nifi- 

 dula, concetitrice li?'ata, liris distantihus, lineas incrementi 

 t?'a-iisg/edientibns, inf?'a 7/ia^i^is approximatis. Spira late 

 cofiica, acuta. Anfractus 5 applanati, sutura linear i, ultiiinis 

 cantia magna mediana cinctus, infra convex its. Apeitura 

 securiformis. Peristoma expansiim et incrassatuin, lividum, 

 angulo hand deniifero cum callo granulato et circumscripto 

 jimctum. 

 Diam. maj. 12]-, min. io-|, alt. vix 8, alt. apert. \\ mill. 

 Santa Cruz de la Sierra (Germain). 



Distinguished from Helicina caracolla Moric, the nearest 

 allied form, by the development of the lirte, much less broad 

 peristome,' more elevated spire, and many other less conspicu- 

 ous features. 



Helicina sulfurea Anc, n. sp. 



Testa depresse tnrhinata, tenuis, lateflava, cum lineolis concentricis 

 a Ibis tenuibus perscBpe ititerruptis, interdum supra infraque 

 caritiam peripherics rubro cincta, exiliter concentrice lirata, 

 sjibtus spira I iter striata. Spira conica, acuta. Anfractus 

 4^ plani. sutura lineari, ultimus superne declivis, sjibtus con- 

 vexus, callo concolore, granulato, circumscripto. Apertura 

 obliqua, securiformis, margine basali late arcuato. Peristoma 

 expansiusculum, incrassatum, angulo suhmucronato cum callo 

 junctum. 



J.C., vii., Jvily, 1892. 



