195 
VERMETUS tumidus 0 
TAB. DXCVI.— /g. 4. 
Spec. Char. Discoid ; whorls few ; tube thicks 
externally marked with a broad furrow on two 
sides; the produced part small, short, cylindri- 
cal ; edge of the aperture thickened. 
The shell of this is so thick that it appears tumid just 
before the small cylindrical part of the tube that precedes 
the aperture : the whorls are seldom more than two, with 
a concentric furrow on each side, and a callus at the apex. 
From the Coral Rag near Scarborough. 
VERMETUS concinnus. 
TAB. DXCVI. — /g\ 5. 
Spec. Char. Discoid or slightly convex, a large 
portion of tube produced ; tube five-angled, 
four angles acute, the fifth obscure. 
A neat little shell : at first sight it seems to be a square 
tube, but upon close examination an obtuse angle is per- 
ceived round the margin of the disk. 
Very abundant in a thin stratum of brown sandy Lime- 
stone in Robin Hood’s Bay, said to be equivalent to the 
Inferior Oolite. We have received it from several cor- 
respondents. 
