746 MUREX. 



Inhabits the coast of Devonshire. Montagu. 



Shell about five-eighths of an inch long, and a quarter of an 

 inch broad, of a dark purple colour, sometimes marked with 

 a few irregular spots or blotches of white ; Mr. Montagu 

 says it has nine or ten rounded whirls, tapering to an ex- 

 tremely fine sharp point, and furnished with nineteen or 

 twenty somewhat oblique longitudinal ribs, which are crossed 

 by numerous sharp ridges, rising into angles upon the ribs, 

 and making the shell very rough. 



MURiCATus. 135. Shell oblong, and very rough ; 

 whirls ventricose, with longitudinal ribs and 

 transverse elevated striae, forming tubercles 

 at their intersections ; beak long and narrow. 



Murex muricatus. Montagu Test. p. 262. t. 9. f. 2. 3Ia- 

 ton and Racket, in Lin. Trans, viii. p. 149. 



Inhabits the coasts of Devonshire. Montagu. 



Shell about half an inch long, and half as broad, generally co- 

 vered with an orange red epidermis, or extraneous matter, be- 

 neath which it is white tinged with flesh-colour, or sometimes 

 with green ; Mr. Montagu says the aperture is oval, termi- 

 nating in a long slender canal, which in length together ra- 

 ther exceed the rest of the shell ; outer lip sharp, and den- 

 tated on the edge ; margin within crenulated, and the pillar- 

 lip smooth. 



MiNUTissiMUS. 136. Shell minute, with five spirally 

 striated whirls, and remote ribs ; beak closed. 



Murex minutissimus. Adams in Lin. Trans, in. p. 65. 



Montagu Test. p. 273. Maton and Rackety in Lin. 



Trans, viii. p. 149. 



Inhabits the sea-sand on the coast of Pembrokeshire. Adams, 



The only addition which Mr. Adams has made to the above 



short character, is, that the shell is thin and pellucid. 



ARENOSUs. 137. Shell minute, with decussated 

 ribs on the lower whirls, and the three upper 

 ones smooth ; body-whirl very large, and the 

 beak acute ; aperture oval, and the outer lip 

 toothed without. 



Murex arenosus. Gmelin, p. 3558. 

 Murex, No. 286. Schroeter Einl. i. p. 644. 

 Spengler, n. Schr. Daen. i. p. 373. t. 2. f. 8. 



