HELIX.— Plate LXX. 



ultimo an/ice descendente ; cohnneHa pecuHariter late 

 excatalu-planatd, alba, vuiri/iiie acuta ; aperlurd ovatd, 

 alia, subconlractd ; perutoiiiate subreflexo. 



The thick-pillar Helix. Sliell iinperforatcd, globose, 

 rather swollen, yellowish, obliquely marked here and 

 there with brownish streaks, nigulosely decussated 

 throughout with spiral and oblique stria? ; spire ob- 

 tuse ; whorls five, convex, last whorl descending in 

 front ; columella peculiarly broadly excavately flat- 

 tened, sharp at the edge, white ; aperture ovate, 

 white, somewhat contracted ; lip a little reflected. 



Pfeiffer, Pro. Zool. Soc. 1845, p. 71. 



Hab. Facing Island, Port Curtis ; Dunk Island ; Cape 

 Upstart, Australia (at roots of bushes) ; Macgillivray. 



Distingiiished by a peculiarly globosi- form, and a cha- 

 racteristic broad flatness of the columella. 



Species 365. (Mus. Cuming.) 

 Helix Richmondiana. Hel. testa imperforatd, acute 



pt/ramidali, laliusculd, liFvigatd pel obtiqui suitilissime 

 striata, iti/ente fused, apice rufescente ; spird ublusd ; 

 anfraetibus sex, plaiiatis, ultimo concavo, ad periphe- 

 riam acute carinaio, subtus piano ; aperlurd horizon- 

 tali, trigono-ocatd, intus livido-cttrutescente ; perisiti- 

 mate incrassato, reflexo, livido'/usco, marginibu» callo 

 junctis. 



The Richmond Helix. Shell imperforated, sharply 

 pyramidal, rather broad at the base, smooth or ob- 

 liquely very finely striated, dark Ijrown, reddish at 

 the apex ; spire obtuse; whorls six, flattened, last 

 whorl concave, sharply keeled at the periphery, flat 

 beneath ; aperture horizontal, triangularly ovate, livid 

 blue within ; lip thickened, reflected, livid brown, 

 margins joined by a callosity. 



Pfeiffer, JlSij. (Mus. Cuming.) 



Hab. Australia. 



A dark chestnut-brown TVocArw-shaped species, remark- 

 able for its broad flattened base. 



