HELIX. 17 



HELIX HINDSI, PrEIFFER. 



Testa anguste umbilicata, depressa, subtiliter striata, eorneo- 

 lutescens, diapliana, nitida ; spira parum elevata ; anfractus quin- 

 que planiusculi, ultimus basi couvexior ; auticii superne deflexus, 

 subtus constrictus ; umbilicus pervius ; apertura perobliqua, luua- 

 ris, ringens ; peristoma brenter reflexum, marginibus conniven- 

 tibus, callo tiiangulari, deutifoi'mi, bicruri junctis, dextro lamella 

 subverticali, basali dentibus 2 acutis munito. 



SYNONYMS AND EEFEKENCES. 



B. Bindsi, Pfeif. in Proc. Zool. Soc. 1845, p. 132; Monog. Helic. I. 416. 

 Chesin., 2d ed. No. 386, tab. 65, f. 7, 8. 



DiAM. maj. 8, miii. 7 ; alt. 4^ mill. 



Inhabits Mexico and Texas. 



Ohs. Dentium formatione persimilis H. ventrosidse ; 

 differt magnitudine, nmbilico regulari, pervio, anfracti- 

 bus arctioribus, ultimo minus inflato, baud gibbo, etc. 



HELIX HOPETONENSIS, Shuttleworth. 



Testa anguste et vix pervie umbilicata, depresso-globosa, con- 

 fertim costulato-striata, ollvaceo-cornea, lardeo-nltens ; sjiira ob- 

 tusa, convexa ; anfr. b\ couvexiuscull, ultimus antic^ vl.x doflec- 

 tus, ad aperturam constrictus ; apertura lunaris, trldentata ; dente 

 medioori linguiforml in parietl aperturali paululum liitrante ; 

 perlst. reflexum, Intus callo albo tenui labiatum, marginc dextro 

 dente parvo paululum immerso, basali dente marginall munito. 



VOL. III. 3 



