GASTEROPODA PECTINIBRANCHIATA. 73 
Tlie ClavatiilcB, in Avhich the einargination is wide and reaches 
to the spire, are also properly distinguished. 
AVhen the spire is but slightly marked, flattened or rounded, and 
the columella is without plicee, they are the Pyrula, Lam. Some are 
umbilicated*, and others notf. 
From these Pyiailee, Montfort again separates the species with a 
flattened spire, internally striated near the lip, by the name of Ful- 
gur'l- They are a sort of Pyrulae with a plicated columella, the 
plicae being sometimes almost insensi))le. 
Among these divisions of the Fusi of Brugiercs, the /^aycio/a?’i6", 
Lam.§, are distinguished by some oblique and Avell marked plicae on 
the columella, near the origin of the siphon ||. The 
Turbinella, Lam., 
Also consists of shells with a straight canal, but without varices, dis- 
tinguishable by the large transverse plicae on their columella, which 
extend the whole length of the aperture, and which closely approxi- 
mate them to the conical Voluke; they only dift'er from the latter in 
the elongation of their aperture into a sort of canal || ; the line that 
separates them is not easily traced. The genus 
Strombus, Lin. 
Includes those shells with a canal that is either straight or inflected 
towards the right, of which the external margin of the aperture di- 
lates Avith age, but still preserves a sinus near the canal, under which 
passes the head of the animal, when it extends itself. 
In most of them the sinus is at some distance from the canal. They 
are subdivided by M. de Lamarck into two subgenera. The . 
Strombus, Lam. 
Ill which tlie margin expands into a v.dng of more or less extent, 
the immense number of fossil species described by Lamarck and other coneby- 
liologists. 
♦ Mur. rapa, Martini, III, Ixviii, 750, 753; — Buccimm bezoar, Gm., Martini, III, 
Ixviii, 754, 755. 
•f Bulla ficus, L., List., 750, 46; — Murex fiicus, Ib., 741. 
X Murex perversus, L., List., 907, 27; — Mur. aruamts,\JiS,t., 90S, ‘2,H\-~Mur. ca- 
naliculatus, Martini, III, Ixvi, 73S, 740, and Ixvii, 742, 3; — Mur. spirillus, Martini, 
III, cxv, 1069; — Pirula canaliculata, Lam., Montf., 502, which appears to me the 
same as the Mur. carica, Martini, III, Ixvii, 744. 
§ Mur. tulipa, L., List., 910, 911 ; — Mur trapezium, List., 93, 26; — Mur polygo- 
nus. List., 922, 15; — Mur. infundibulum, hist., 921 , 14; — Mur. striafulus, Martini, 
IV, cxlvi, 1351, 1352; — Mur. versicolor, lb., 1348; — Mur. j’ordalis. Id. cxlix, 
1384; — Mur. costaius, Knorr., Petrif., C, n. 7; — Mur. lancea, Martini, IV, cxlv, 
1347. 
II Mur. scolymus, Martini, IV, cxlii, 1325; — Valuta py mm, IsldiTtmi, III, xcv, 916, 
917; — Valuta ccramica. List., S29, 51 ; — Valuta rhinoceros, Chemu. X, 150, f. 1407, 
1408; — Valuta turbincllus. List., 811, 20; — Vol. capitellum, lAst., 810, 19; — Vol. 
globulus, Chemn., XI, 178, f., 1715; — Vol. turrita, Gm. 
