36 DIJNDKT GASTEROPODA. 



STRAPAROLLIJS, sp. 



There is one specimen, 33 mm. in diameter, wliicli is not 

 perfect enough to he recognisahle. In the almost equal depression 

 of the surfaces, it is similar to S. sulcequalis, D'Orh., hut the 

 tuhercles and ornamentation seem to be similar to those of 

 S. tuber culosus, Thorent. sp. 



It is hoped that further specimens may he found. 



CIREUS KODOSTJS, Sowerby. 



1818 C. Nodosus, Sow., Min. Conch., pi. 219, figs. 1, 



2, 4; and pi. 141, fig. 2. 

 Syn. 1818 C. Leachii, Sow., M. C, pi. 219, fig. 3 



1865 C. acutus. Cat. Eoss. Museum Pr. GeoL, p. 207, 



(non Sow.) 



We have sufficient material in the Museum for proving the 

 identity of these two species. 



The original specimen of C. Leachii^ figured by Sowerby, is 

 deposited here, and we have some two dozen of the ordinary 

 variety. 



Only that one specimen shows the spines preserved, but several 

 others show the bases from which they seem broken off short. 

 It is a pity that the original figures were so sketchy. 



The characteristic feature of the species as we would constitute 

 it, is the possession in the upper whorls of a keel, near the suture, 

 which evidently bore spines, the bases occasionally being well 

 seen ; the last whorl has two keels, the upper being the sharper 

 and bearing the long spines, which are rarely preserved ; on the 

 base of the last whorl are four lesser and weaker ridges. 



The whorls are crossed by transverse costae, and it is where 

 these pass over the keel that the spines occur ; underneath and 

 between the spines the surface is excavated in quadrangular 

 depressions ; in addition there are spiral lines over the surface of 



