HELIX §. 121. 122. 299 



Helix pollodonta Orb., Pfr. Mon. I. p. 407. n. 1060. 

 _ — Reeve Conch. ic n. 1485. t. 209. 



— — (Ophiogyra) Pfr. Vers. p. 136. 



liabitat in Boliviae provincia Lagunensi. 



Obs. Lamellae et dcntium series plures fracto ultimo anfractu con- 

 spicluntur. 



* 



1919. sculpturata Gray. (Rv. n. U71. t. 208. — 



Sculpfaria Pfr. Vers. p. 135.) Mon. I. p. 408. 



§. 122. 



1920. Linnaeana Pfr. [Rv. n. 226. t. 48. — Caracolus 



Pfr. Vers. p. 4 41. — Lucerna Linn. [Serpcntuius] 



Ad. Gen. p. 201.) 390. 



1921. H. Amazonica Pfr. 



T. umbilicata, depressa, solida, superne confertim undulato- 

 plicala et subgrauulata , fulva, ad suturam et carinam rufo- 

 uiaculata; spira vix elevata, obtusa; anfr. Sy^ parum convexi, 

 regulariter accrcscentes, ultimus non descendens, peripheria sub- 

 acute carinatus, basi inflatus, confertim radiato-striatus, flave- 

 scenti-albidus, rufo-multifasciatus; umbilicus angustus, pervius; 

 apertura parum obliqua, angulato-lunaris, intus margaritacea ; 

 perist. breviter rellexum, margine supero fere horizontaliter pa- 

 tonte, basali arcuato, columellari in laminam triangularem forni- 

 catam expanso. — Diam. maj. 53, min. 41, alt. 23 mill. (Mus. 

 Cuming.) 



Helix Amazonica Pfr. in Proc. Zool. Soc. 1854. p. 286. 



— — Reeve Conch. ic. n. 1386. t. 197. 



— — (Solaropsis) Pfr. Vers. p. 138. 



liabitat in ripis fluvii Amazonum. 



Obs. Peraffinis //. serpenti Spix; differt statura, testa solida, subtus 

 inflata, sculptura, margine dextro fere horizontali, etc. 



1922. H. saturnia Gould. 



T. umbilicata, sublentiformis, tenuiuscula, oblique striata 

 et minutissime granulata, fulva; spira conoideo-convexa, obtusa; 

 sutura submarginata ; anfr. 47^ planiusculi, regulariter accre- 

 scentes, ultimus prope suluram turgidulus, antice non descen- 

 dens, peripheria subacute carinatus, basi inflatus, obsolete spi- 

 raliter sulcatus; umbilicus mediocris, apertus; apertura parum 

 obUqua, rhombco-Iunaris; perist. expansum et retlexum, mar- 

 ginibus callo tenui junctis, columellari fere verticali, extus di- 



