NEW SPECIES OF FOSSIL SHELLS FROM TABLE 



CAPE. 



By W. L. May. 



Plate IV. 



(Read 13th June, 1921.) 



The following nine species here described were mostly 

 collected by the late E. D. Atkinson, so widely known for his 

 interest in the Table Cape fossils, and who probably did more 

 collecting in these beds than any other worker. Shortly be- 

 fore his lamented death he placed most of these specimens in 

 my hands for description, he being particularly desirous that 

 the two large Turridm should be described and named. I 

 have therefore felt it a duty devolving upon me to carry out 

 my friend's wishes, to the best of my ability. 



The five species of Marginella here described, together 

 with the four already recorded, make up the goodly number 

 of nine species of these interesting forms, and show that the 

 genus was well represented in Tertiary times in our seas, as 

 well as being so abundant in recent times. All the figures 

 are drawn from the types, which will be presented to the 

 Tasmanian Museum. 



Marginella atkinsoni, Sp. nov. 



Shell broadly fusiform, smooth, white and shining. 

 Whorls four, much rounded; spire exsert, about one-third the 

 length of the shell ; broadly shouldered but tapering narrowly 

 anteriorly. Aperture rather narrow; columella slightly con- 

 cave, bearing four strong plaits, the anterior one being al- 

 most vertical, the second less so, the upper two very trans- 

 verse, the highest of all being at right angles to the pillar. 

 Outer lip curved, very heavily thickened, crenulated on the 

 inner edge by about a dozen rather irregular denticles. 



Long. 5, lat. 3 mill. 



This species, which is common at Table Cape, is very 

 similar to M. wentivorthi, Ten.-Woods, but is a much broader 

 shell, with rounder whorls, and a more curved, and far more 

 heavily varixed outer lip. 



Named after the late E. D. Atkinson. 



PI. IV., fig. 1. 



Marginella corpulenta, Sp. nov. 

 Shell very broadly pyi'iform, with an elevated pyramidal 

 spire and mammillated apex. Whorl? four, well rounded; 



