154 CONTRIBUTIONS 
More recently the same author has described six new 
species from the Tertiary of Maryland and Virginia.* 
GENUS PYRULA. Lamarck. 
P. cancellata. Plate 5. Fig. 160. 
Description. Shell subpyriform, beautifully cancellate 
over the whole exterior; substance of the shell thick ; 
spire rather elevated, pointed; suture small, slightly 
thickened above; whorls six, angular above; canal rather 
short and wide ; mouth subovate, rather contracted ; outer 
lip thickened, with the edge bevelled. 
Length 1.4, Breadth .7, of an inch. 
Observations. Unfortunately but a single specimen of 
this truly beautiful shell has come into my possession. 
It is perfect and presents very remarkable decussating 
strie, Which are so regularly placed as to present the ap- 
pearance of meshes, the point of section being enlarged. 
This enlargement causes the angle of the whorls to be 
somewhat granulate. It seems from Sowerby’s figuret 
to resemble pretty closely the Pyrula newilist (Lamarck), 
(Murex newilis of Brander§). The spire is, however, more 
elevated, the canal shorter and the superior part of the 
whorl angular. The Pyrula Greenwoodii, figured by Sow- 
erby, plate 498, has some characters resembling our species, 
but is specifically different. 
* Fossil Shells of Ter. For., p. 17 t Min. Conch. pl. 331. 
t Ani. Sans. Ver. vol. 7, p. 572. § Hamp. Fos. p. 4, fig. 55, 
