HELIX. 17 



HELIX HINDSI, PFEIFFER. 



Testa anguste umbilicata, depressa, subtiliter striata, eorneo- 

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

 que planiusculi, ultinius basi convexior ; antice superne deflexus, 

 subtus constrictus ; umbilicus pervius ; apertura perobliqua, luua- 

 ris, ringens ; peristoma breviter reflexum, marginibus conniven- 

 libus, callo triaiigulari, deutiformi, bicruri junctis, dextro lamella 

 subverticali, basali dentibus 2 acutis niunito. 



SYNONYMS AND REFERENCES. 



H. Bindsi, PFEIF. in Proc. Zool. Soc. 1845, p. 132; Monog. Helic. I. 410. 

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



DIAM. maj. 8, min. 7 ; alt. 4-j mill. 



Inhabits Mexico and Texas. 



Obs. Dentram formatione persimilis H. ventrosulge ; 

 difFert magnitudine, umbilico regulari, pervio, anfracti- 

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



HELIX HOPETONENSIS, SHUTTLEWORTH. 



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

 fertim costulato-striata, olivaceo-cornea, lardeo-nitens ; spira ob- 

 tusa, convexa ; anfr. 5^ convexiusculi, tiltimus antic^ vix deflec- 

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

 mediocri linguiformi in parieti aperturali paululum intrante ; 

 perist. reflexuni, iutus ctillo albo tenui labiatum, margine dextro 

 dente parvo paululum inimerso, basali dente marginali niunito. 



VOL. III. 3 



