GASTiiROPOOA. PECTINIBlUXCHUTA. 
73 
Murex, Lhi* * * § 
Comprises all these shells in which there is a salient and straight 
canalf . The animal of each snbgeniis is furnished Avith a proboscis, 
long approximated tentacnla on the external side of which are the 
eyes, and AAUth a horny operculum ; the veil on the head is wanting ; 
and, the length of the siphon excepted, it otherwise resembles that 
of the Buccina. Brugiere divides them into genera, which have been 
since subdivided by Messrs. Lamarck and Montfort. The 
Murex, Brug. 
Includes all those Avhich have a and salient straight canal, Avith varices 
across the AvhorlsJ. 
Lamarck appropriates this name to those in Avhich the varices are 
not contiguous on tAA’o opposite lines. 
If their canal be long and slender, and the varices armed Avith 
spines, they become the Murex, properly so called, of Montfort§. 
When, Avith this long canal, the varices are mere knobs, they form 
the Brontis, Montf. || 
Some of them, Avhich, Avith a moderate canal, have projecting 
tubes that penetrate into the shell betAveen spiny varices, constitute 
the Trjphis, Montf. ^ 
When, instead of spines, the varices are furnished Avith plicated 
lamella>, slashed, or divided into branches, they are the Chicoracea, 
Montf.** Their canal is long and moderate, and their foliaceous 
productions A^ary infinitely in figure and complication. 
When, Avith a moderate or short canal, the varices are mere knots, 
and the base is provided Avith an umbilicus, they form the Aquilla, 
Montf. Several species inhabit the coast of Franceff. 
If the umbilicus be wanting, they are his Lolorium\X. 
Finally, Avhen the canal is short, the spire elevated, and the varices 
simple, they are liis Triionium. Their mouth is usually plieated 
* This great genus forms the family sipiionostoma, Rlainv. 
■t To which Linnaeus also added several Pv.rpurce in which the canal is not salient, 
and all the Cerithia in which it is recurved. 
I Varices are knobs with which the animal borders its mouth, at each interruption 
in the growth of its shell. 
§ Murex iribulus, List., 902, 22; — Mur. brandaris, List., 900, 20; — Mur. cornu- 
/«s. List., 901, 21 ; — Mur. senegulensis, Gm., and the costatus of No. 86, Adans, Se- 
neg. VIII, 19. 
II Murex haustellum, List., 903, 23 ; — Mur. caudatus, Martini, Conch., Ill, f. 1046, 
1049 ; — Mur. pyrum. 
Murex tubifer, Roissy, Drug., Journ. d’Hist. Nat., I,xi, 3 ; Montfort, 614. 
** Murea; ra;nosi(S, List., 946, 41, and all its varieties; Martini, III, cv, cx, cxi ; 
— Mxir. Scorpio, Martini, evi ; — Mur. saxatilis, Martini, evii, cviii, and several others 
not yet well characterized. 
-|'i' Murex cutaceus, L., .Seb., Ill, xlix, 63, 64 ; — Mur. friincuh's, Martini, III, cix, 
1018, 20; — Mur. miliaris,ld., i'i, Vign., 36, 1 — 5; — Mur. jionium, Adans., IX, 22; 
■ — Mur. decussutus, Ib., 21. 
I J Mur. totorium, L., Martini, IV, csxx, 1246'-'9; — Mur. femorale. Id., cxi, 1039; 
— Mur. triguetcr, Born., XI, 1, 2. 
