195 
MUREX coniferus. 
TAB. CLXXXYII. —Fig. l. 
Spec. Char. Elongated, with many longitudinal 
undulations, crossed by numerous unequal ele- 
vated striae ; volutions few, inversely conical, 
their upper parts depressed and nearly smooth; 
beak open, rather short ; aperture ovate. 
The general form of this Murex is that of a series of 
cones gradually diminishing in size, and so arranged) 
that the points of the smaller ones penetrate the bases of 
the larger : a few of the striae upon the smaller whorls 
form carinae, which are thicker where they cross the un- 
dulations or costae, and give them a tuherculated appear- 
ance. The upper part of each whorl is distinguished by 
the want of transverse striae. The aperture, including 
the beak, occupies half the length of the sheik 
Highgate Hill afforded me this species, which I have 
not recognized elsewhere. 
MUREX regularis. 
TAB. CLXXXVTL— Fig. 2. 
Spec. Char. Rather elongated, with many longi- 
tudinal undulations, crossed by strong elevated 
striae ; whorls convex, the last contracted to- 
wards the beak ; beak open, rather slender, 
aperture obovate. 
JL he volutions vary in number, from five to eight ; they 
are very regularly convex ; the ribs and striae are also 
