32 
VOLUTA scalaris. 
TAB. DCXX\ —fig. 4 & 5. 
Spec, Char. Ovate, ventricose, costated and trans- 
versely striated ; costas numerous, with two 
nearly equal small spines on the upper part of 
each ; striae distant, equal ; spire shorter than 
wide, acute ; base attenuated ; whorls with a 
narrow flat space between the upper row of 
spines and the suture, and concave between 
the two rows of spines. 
A. smaller, more inflated and more regularly shaped 
shell than V. spinosa : the narrow costae, numerous, nearly 
equal spines, and regular, sharp striae, which continue 
almost up to the lowest spine, give it an aspect by which 
it may easily be recognized. It occurs plentifully at Bar- 
ton, but seldom exceeds an inch and a quarter in length. 
The variety (3 of V. spinosa , t. 115, approaches to it, but is 
less rather than more inflated, and has a portion of the last 
whorl smooth. 
VOLUTA depauperata. 
TAB. DCXXV — -fig. 6, 8t 396. fig. 4. 
This figure of a rare species is given to show the young 
state, and the coloured stripes which are constantly obser- 
vable, but were obscure and therefore omitted in the spe- 
cimen formerly figured. Of five individuals I have seen, 
the largest is an inch and three quarters long. 
