FUSUS rugosus. 
TAB, CCLXXIV. Figs. 8, and 9. 
Spec. Char. Elongated, subcancellated, with many 
prominent costae ; volutions tumid, with about 
8 elevated striae upon each. 
Syn. Murex porrectus. Brander , f. 35. 
Fusus rugosus. La March , Env. de Paris , 
56. 
This is distinguished from the last by the greater 
number of its ridges, and rounder and more prominent 
costae : it has also a rough appearance, free from the 
sharpness that characterizes F. asper. The longitudinal 
striae are fine, sharp, and numerous. The length five 
times the width. 
Fig. 9 exhibits a variety, in which there is a greater 
space between the third and fourth ridges than the 
remainder ; in other respects it does not appear to differ. 
I have all these species from Hordle Cliff, either by 
favour of Miss Dent, Miss Teed, Miss Beaminster, or 
the Rev. Mr. Iremonger ; and through the kindness of 
Professor Sedgwick I have been enabled to consult the 
Woodwardian collection, and thus by comparing nu- 
merous specimens, to establish them. It does not appear 
that there are intermediate varieties. 
