GENUS XXVI. MVREX. 119 



tlie right, or to the lert, no provision is made for those without 

 a canal, and wliich have onlv ii liolIo\v that cannot be said to 

 bend either way, described by Linnaeus as Ecaudati : the con- 

 sequence is, that these are divided between the Murex and the 

 Buccinum, tending- to perplex both. Also the tapering- shells, 

 which are divided among all the three genera, seem to have 

 so great an affinity to each other, that it would render each 

 genus much more distinct, to take these out and form them 

 into one or two new genera, as has been done by Lamarck. 



There is not much known of the animals inhabitinc: these 

 shells ; it is supposed they differ but little from those of the 

 Buccinum ; there are a few of them represented in jil. 1 1, but 

 information on this subject is much wanted. 



Linneeus makes six divisions in this genus : first, Spinosi ; 

 second, Fro7idosi; third, Varicosi; fourth, Ecaudati', fifth, 

 Caudigeri', and sixth, Turriti. He describes only 61 species, 

 Gmelin has added 102, and Dr. Turton 20. Total, 183. 



Lamarck divides this genus into five, as follow : 

 MvREX. Shell oval or oblong, with a channel at the base, 

 having always on the outside some longitudinal ridges ; 

 generally rough with tubercles or spines, or fringed (see 

 Mwrex HausteUum, f. 88). 

 Fusus. Shell somewhat spindle-shaped, swelling in the middle 

 or lower part, ^^ ith a chainiel at the base ; the spire 

 lengthened, and destitute of sutures or ridges on the out- 

 side ; the pillar smooth, the right lip mthout a notch (see 

 Mwex Coins, f. 89). 



