81 



Habitat Mirador , Veracruz reipublicae mexicanae 

 (Berendt). 



12. (1738a.) Helix Piatonis Pfr. 



T. angustissime umbilicata , depresso-turbinata, tenuis, 

 subtiliter costulato-striata , vix nitidula, diaphana, corneo- 

 isabellina; spira conoidea, vertice acutiusculo, nigricante, 

 nitido; sutura profunda, submarginata ; anfr. fere 5 convexi, 

 ultimus lineis 2 rufulis cinctus, antice profunde descendens, 

 subtus planior, antice subconstrictus; apertura perobliqua, 

 lunato-ovalis; perist. tenue, marginibus vix convergentibus, 

 dextro expansiusculo , basali ad umbilicum perdilatato , re- 

 flexo, intus callo oblique dentiformi mnnito. — Diam. maj. 

 121 2, min. 101/2, alt. 7 mill. 



Habitat in monte Piaton insulae Haiti. (Smith.) 

 13. (238 b.) Bulimus Paivanus Pfr. 



T. compresse umbilicata, ovato-conica, solida, striata et 

 submalleata , alba, fasciis 6 — 7 latis spadiceis, strigatim 

 interruptis et hinc inde junctis ornata; spira elevato-conica, 

 vertice acutiusculo; sutura impressa, subirregularis: anfr. 7 

 modice convexi, ultimus spira paulo brevior, antice subas- 

 cendens, basi indistincte compressus ; columella inflata, sub- 

 vertioalis; apertura parum obliqua, irregulariter ovalis, intus 

 nitida, fasciis saturatioribus ; perist. simplex, margine dextro 

 sublate expanso, columellari ibrnicatim reflexo. — Long. 37, 

 diam. 15 mill. Ap. c. perist. 19 mill. longa, 12 lata. 



Habitat in regione littorali (Veracruz) reipublicae me- 

 xicanae (Berendt). 



14. (280 a.) Bulimus Chiapasensis Pfr. 



T. anguste perforata , ovato-conica , solidula , striata 

 striisque tenuissimis spiralibus decussata, sordide albida; 

 spii'a convexiusculo-conica, vertice acutiusculo ; sutura levis, 

 subtilissime serrulata; anfr. 5' convexiusculi, ultimus spiram 

 superans, antice vix arcuatim ascendens, basi subcompressus; 

 columella filaris, vixarcuata; apertura obliqua, ovalis, intus 

 nitide alba; perist. simplex, margine dextro deorsum per- 



II. Apr. 1866. 6 



