44 



MOLLUSCA. 



Oliva. 



Foss. Hant. Coll 

 179, pi. 301, fi 



»■ 



fig. 24. 

 2, 3, 4. 



to both extremities ; witli 

 striee, and the intermediate 



Genus I.— CONUS.— Z-jmwcems. 



Shell inversely conical, turbinate ; spire generally 

 short; aperture longitudinal, linear, entire, narrow, and 

 effuse at the base ; pillar smooth ; shape of a reversed 

 cone ; most of the species with a notch in the upper 

 extremity of the outer lip, which, for the most part, is 

 very straight, and sometimes, although seldom, slightly 

 arcuated; always destitute of teeth; usually, if not 

 always, covered with an epidermis, in a recent state. 



1. C. CONCINNUS. — The Neat Cone, pi. XXX. fig. 1 and 

 10. 



Conus coticinnus. Sowerby, Mln. Conch. III. p. 180, pi. 

 302, fig. 2. Fleming, Brit. An. p. 330. 



Subfusiform, somewhat angular in the centre ; spire one- 

 third the length of the shell, with small knobs, and fine 

 granulated spiral striae ; base a little produced, and provided 

 with furrows, which are deepest towards the point ; breadth 

 equal to about a third its length. 



Found at Barton and Highgate Hill, London. 



2. C. DORMiTOR The Long-sleep Cone, pi. XXX. fig. 



6,7. 



Conus dormitor. Brander, 

 Sowerby, Min. Conch. IIL p. 

 Fleming, Brit. An. p. 330. 



Subfusiform short, tapering 

 numerous, transverse, elevated 

 spaces finely crenulated ; sometimes placed in pairs ; length 

 of the spire about equal to the greatest diameter of the 

 base ; aperture extending more than half the length of the 

 shell ; acute above ; outer lip rising gradually from the body, 

 and considerably inflated in the centre, and narrowing the 

 aperture. 



Found at Muddiford and Barton. 



3. C. ciNGiLi.us- — The Zoned Cone, pi. XXX. fig. 8. 

 Conus dormitor. Variety, Sowerby, Min. Conch. IIL pi. 



179. fig. 1. 



Subfusiform, tapering to both extremities, with transverse 

 close striae, and the intervening spaces crenulated ; a smooth, 

 broad band ornaments the upper part of the body ; aperture 

 equal to half the length of the shell ; and the spire a third 

 its length. 



This differs from the C. dormitor, in being less acute at 

 the apex and base ; in the outer lip being more inflated, the 

 body swelling more in the centre ; in the transverse band ; 

 and in being only half the size of the former. 



Found at Barton. 



4. C. scABRiuscuLus. — The Hough Cone, pi. XXX. fig. 

 2,3. 



Conus scabriusculus. Fleming, Brit. An. p. 330. 



C. scabriculus. Brander, Foss. Hant. Coll. fig. 21. 

 Sowerby, Min. Conch. III. p. 180. pi. 303. fig. 1. 



Subfusiform, somewhat short, bulging in the centre, taper- 

 ing towards both extremities, terminating in an acute apex, 

 and in an obtuse base ; with transverse, elevated, serrated, 

 wide-set, compressed striae, which feel rough to the touch ; 

 aperture more than half the length of the shell, straitened 



above, and effuse at the base ; outer lip rising gently from 

 the body ; arcuated and inflated in the middle. 



Sowerby says the right lip is sometimes plaited in tlie 

 edge, but this we have not observed. 



Found in the London Clay at Barton. 



5. C. HiGHGATENSis. — The Highgate Cone, pi. XXX. 

 fig. 4. 5. 



C. concinnus ? Sowerby, Min. Conch. III. pi. 302, fig. 1. 



Shell conical, rather smooth ; spire consisting of about six 

 volutions, with indications of obsolete tubercles, and the 

 centre of each volution furnished with a spiral canal ; aperture 

 narrow, two-thirds the length of the shell. 



Found in the London Clay at Highgate Hill. 



6. C. Bartonensis. — The Barton Cone, pi. XXX. fig. [) 

 and 11. 



C. scabriculus. Variety /3, Sowerby, Min. Conch. III. 

 p. 180, pi. 303, fig. 2. 



Shell conical, elongated ; spire and body abruptly tapering 

 to a short point ; spire not a third the length of the shell ; 

 surface covered with numerous close-set, minutely toothed, 

 transverse striae ; aperture contracted, and equal to two- 

 thirds the length of the shell. 



Found in the Clay at Barton. 



Genus II. — OLIVA. — Bruguiere. 



Shell subcylindrical, convolute, smooth, and glabrous ; 

 spire short, with canaliculated sutures ; above wliich 

 the volutions are coated with a fine enamel ; aperture 

 elongated, rather narrow, emarginate at the base ; 

 columella obliquely striated, or plaited, having a varix- 

 like appendage. 



1. O. BiiANDERi. — Brander's Oliva, pi. XXX. fig. 18. 19. 

 Oliva Branderi. Sowerby, Min. Conch. III. p. 159, 



pi. 288, upper figure. Fleming, Brit. An. p. 335. Valuta 

 Jspidula, Brander, Foss. Hant. Coll. fig. 7-'. 



Shell oblong-ovate, smooth ; spire produced, with four, volu- 

 tions terminating in a somewhat pointed apex ; body ventri- 

 cose ; aperture oblong ; outer lip thickened, inner lip plaited, 

 and a little varicose near the base ; diameter of body equal to 

 half the length of the shell. 



Found in the London Clay, Hampshire. 



2. O. Salisburiana. — Salisbury's Oliva, pi. XXX. fig. 

 16, 17. 



Oliva Saltsburiatia. Sowerby, Min. Conch. III. p. 160, 

 pi. 288, lower figures. 



Shell ovate, smooth, short, ventricose ; its diameter equal 

 to two-thirds its length, the thickest part being near the 

 upper margin of the body, from whence it is the shape of 

 a reversed cone ; aperture oblong, somewhat contracted 

 above, widened in the centre, and again becoming narrower 

 at the base ; both lips tumid above, separating the body 

 from the spire, which is short, conical, consisting of four 

 volutions, and ending in a pointed apex. 



Found in the London Clay. 



