88 BOOK OF SPECIES. 
rounded; the inner margin of the lip dentated. 
li. W. 25. 24. 
MUREX. 
Oval or oblong, channelled at the base; rough, 
spinous, or tubercular varices on the exterior 
surface ; mouth rounded, or sub-oval; three or 
more varices on each whorl of the spire; the 
lower ones uniting obliquely with the upper 
in uninterrupted longitudinal rows ; operculum 
horny. 
* Beak longer than the aperture. 
M. cornutus. Somewhat club-shaped, ven- 
tricose above, with a long beak, transversely stri- 
ated; whitish, zoned with yellow or rufous ; body- 
whorl large, and armed with two rows of long 
curved thickish cleft spines; spire very short; 
beak with a few scattered spines, perforate. 6. 
W. 25. 5. 
M. BrRANDARIS. Club-shaped, furrowed, with 
seven varices, ventricose above; beak short, ashy 
white, with two rows of spines, which are thick, 
straight, short, and cleft ; spire rather prominent, 
muricated ; an oblique row of spines on the tail; 
mouth orange. 33. W. 25. 6. 
M. crAssispIna. Ventricose above, with a 
long beak ; three rows of long stout spines, thick- 
ened towards their base, extend the whole length 
