DESCRIPTION OF SHELLS. 187 
Rostellaria lucida. (Tab. V. fig. 21.) 
The Bracklesham shells are seldom so glossy as the Highgate ones, and are 
commonly equally striated all over, not smooth in the middle of the last whorl ; 
but they vary much both in the striz and in the coste. The beak is described 
in ‘Mineral Conchology ’ as ‘‘ short?” for want of perfect specimens; we are 
now enabled to show that it is long, and also that there is no canal carried up 
the spire from the aperture. 
Rostellaria arcuata. 
There being some doubt whether the Linnean Strombus fissurella be the fossil 
or recent species, | have thought it best to give a new name to the Paris basin 
fossil, which is not only different from the recent species, but also from the one 
found at Barton (Rostellaria rimosa, ‘ Min. Con.’ t. 91), being a curved, not a 
straight shell. 
The occurrence of this shell at Bracklesham is one of the indications of the 
resemblance of the Bracklesham beds, rather than the Barton ones, to the lower 
beds of the Calcaire Grossier of Paris. 
Pseudoliva ovalis. (Tab. VII. fig. 13.) 
Spec. Cuar.—Oval, short, with a small pointed spire, smooth ; aperture large, 
ovate, with a short canal above ; left lip very tumid ; columella curved. 
Resembling a very short Oliva, but may be recognized by the want of the 
smooth enamel-like band at the lower part. The marginal tooth on the right 
lip is short. 
Voluta calva. (Tab. VII. fig. 28.) 
Spec. Cuar.-—Pyriform, smooth, obscurely ribbed; whorls concave above, 
their upper margins pressed to the spire ; each rib terminated by a small spine 
at the edge of the concave space ; spire short. 
Length 5, width 3. 
Remarkable among the coronated Volute for being smooth. The figured 
specimen is in Mr. Edwards’s Collection. Mr. Dixon has lately obtained a 
similarly formed shell, quite smooth and also free from ribs, which I am much 
inclined to think is of the same species. 
