OASThRuPODA 1'KCTlNlBlUXCHIATA. 73 



MruiA, /,/;/.* 



Comprises all these shells in which there is a salient and straight 

 mini |-. The animal of cac-h suhgcnus is furnished with a proboscis, 

 long approximated tentaculaon (be external side of which are the 

 i with a horny oj.'erculum ; the veil on the head is wanting ; 

 .UK!, the length of the siphon excepted, it otherwise resembles that 

 of the Buccina. Brugicrc divides them into genera, which have been 

 since subdivided by Messrs. Lamarck and Montfort. The 



MUREX, Drug. 



Includes all those which have a and salient straight canal, with varices 

 acrott the whorlsj. 



Lamarck appropriates this name to those in which the varices are 

 not contiguous on two opposite lines. 



If their canal be long and slender, and the varices armed with 

 . they l-ei'onn- the Murex, properly so called, of Montfort. 



When, with this long canal, the varices are mere knobs, they form 

 the Bronti*, Montf. || 



Some of them, which, with a moderate canal, have projecting 

 tubes that penetrate into the shell between spiny varices, constitute 

 the Typ/as, Montf. [ 



\\heii, instead of spines, the varices are furnished with plicated 

 slashed, or divided into branches, they are the Chicoracea, 

 Montf.** Their canal is long and moderate, and their foliaceous 

 production! vary infinitely in figure and complication. 



\Vhen, with a moderate or short canal, the varices are mere knots, 

 find the base is provided with an umbilicus, they form the Aquilla, 

 Montf. Several species inhabit the coast of France If. 



If tho umbilicus be wanting, they are his Lolorium\\. 



Finally, when the ranal is short, the spire elevated, and the varices 

 le, they are his Tritonium. Their mouth is usually plicated 



* This great genus forms the family SIPIIOXOSTOMA, Blainv. 



v Inch Linnaeus also adiUnl svcnil Purpurtcm which the canal is not salient, 

 and all the Cerilhiu in \vhich it is recurved. 



< are knobs with which the animal borders its mouth, at each interruption 

 in the growth of ito shell. 



Mures Iribulus, List., 902, 22; Mur. brandaris, List., 900, 20; M 



">1 , 21 ; Aftr. sencgalcnsis, Gm., and the costatus of No. 86, Adans, Se- 

 ll Afurw haustellum, List., 903, 23 ; Mur. caudatus, Martini, Conch., Ill, f. 1046, 

 . Mur. pi/rum. 



y, Drug., Juurn. d'Hi-t. Nat.. I. xi. .? ; Montfort, 614. 



* Mi"-' 946, 41, and all its varieties-. Martini. Ill, cv, ex, cxi ; 



i ; Mur. siur-.tili*, Martini, c\ii. r\iii. ;:nd several others 

 xcd. 



ft . 6.1, H4; Mur. tninei'luf, Martini, III, cir, 



. 20; Mur. mi/iorw, Id., i*i, Vign., 36, 1 5; Mur. pomum, Adans., IX, 22; 

 Mur. tlecussatus, ib.. 



t: J/IT. l;tin-i ui, IV, cxxx, 1246 9; Mur. femoral f, Id., cxi, 1039; 



. trimeter, Corn., XI, 1, 2. 



