— 317 — 
subtus vix convexus, regione umbilicali planulata; apertura obliqua, la- 
tiuscula, lunaris, lamella basali valde prominente, acuta, valida, pro- 
funda munita; labrum tenue, acutum; columella modice dilatata, rotun- 
data. Div. anfr. superiorum 1400; div. media 950; alt. 1. 05, lat. max. 
1. 25, min. 1. 17 (Ad.)* 
Helix alligans Adams Contr. to Conch. Nr. 7. p. 105. 
(„Helix alligans. Shell globose, conoid: white, with a yellowish 
brown epidermis: with -regular strie of growth, which are 
very coarse on the spire, and fine on the last whorl: apex 
very obtuse : spire well elevated, with the outlines very con- 
vex above, nearly recülinear below: whorls eight, narrow, 
rather convex, with a well impressed suture ; last whorl scar- 
cely convex beneath, with the umbilical region planulate: aper- 
ture oblique, rather broad, lunate; with a very prominent sharp 
stout revolving lamella far within in the lower part of the last 
whorl: labrum rather thin, sharp: columella moderately dilated 
and well rounded: umbilieus wanting. This species resembles 
H. epistylium and IH. epistylioides. It is most easily recogni- 
sed by the plane surface of the umbilical region. Divergence 
etc. (ul supra).“) 
Obs. Nach Adams’ Angabe des Unterschiedes dieser 
Art von H. epistylium sehen wir, dass er unter dieser 
letzteren eine mit ausgehöblter oder vertiefter Umbilical- 
region versehene Schnecke begreift. 
Allg. Bem. In dieser Pfeiffer nur nach des Ver- 
fassers Beschreibung bekannten Art, können wir Nichts 
anders sehen, als die von Pfeiffer beschriebene Helix 
epistylium. 
N 5. HELIX FOREMANIANA Adams. 
1 Pfeiff. 1. c. Suppl. p. 139 Nr. 734 et in add. I. c. 
„Testa imperforata, ovoidea, solida, superne oblique striata, pallide 
eorneo lutescens; spira convexo-conica, acutiuscula; sutura impressa, 
i marginata; anfr. 8 convezxiusculi, lente acerescentes, ultimus non des- 
h cendens, peripheria obsoletissime angulatus, basi subtilius striatus, 
e globosus, medio profunde impressus; apertura fere verticalis, oblique 
$ lunaris, intus lamella valida subspirali pluries interrupla munisa; 
