DUNDET GASTEROPODA. 49 



PLEUEOTOMARIA PALLIUM, Morris. 



1843 P. Pallium, Morris, Catalogue Brit. Fossils, p. 1 58. 

 Syn. 1819 P. (Trochus) ornata, Sow., Min. Concli., pi. 221, 



fig. 1 (non Defrance, nee 

 Deslong., nee D'Orbigny.) 



Height, 35 mm. Greatest breadth, 46 mm. 



This seems a good species: it differs considerably from any 

 of the species described by Deslongchamps, and would seem to 

 be confined to England. Sowerby's figure is rough but 

 characteristic. 



The broad rounded costse incline in opposite directions towards 

 the sinus-band, which interrupts them. The form is that of a 

 depressed regular cone, the whorls being separated by a deep 

 suture. The umbilicus seems open. The base of the last whorl 

 is convex ; it is marked by concentric and undulating radial lines. 

 The sinus-band has a medium convex ridge crossed by curved 

 lines. 



I believe Dr. Brauns (Mittel-Jura , p. 189) to be wrong in 

 uniting this with F. granulata, Sow. 



There are three specimens in the Museum. 



Localities — Dundry and Yeovil. \Inf. Ool. 



PLEUROTOMAEIA ACTIKOMPHALA, Deslongchamps. 



1848 P. actinomphala, Desl. Mem. Soc. Lin. de !N'orm. 



YIII. pi. 18, fig. 1, p. 38. 



1850 D'Orb. Pah fr. Terr. Jur. 2, 



Gast. pi. 374, p. 458. 



Height 30 mm. Greatest breadth 50 mm. 



"We place here our specimens with strong ridges radiating from 

 the wide umbilicus. Some agree very well with the figures in the 

 Pal. frangaise, others come nearer to Deslongchamps' original 



E 



