()0 



MOLLUSCA. 



Fuses. 



3. F. LiMA_Tlie File Fi.sus, pi. XXXV. fig. 19. 



Fusus Lima. Sowerbv, Miii. Concli. V. p. 28, pi. 423, 

 fig. 4. 



Fusiform ; spire consisting of six volutions, witli their uppor 

 piigcs elevated and pressed upon the spire, and terminating in a 

 pointed apex; the shell covered with transverse and longitudinal 

 elevated ribs, which at the points of intersection produce an 

 acute spiiiiform appearance upon the lower parts of the shell, 

 but upon the superior portions of the volutions, these become 

 simple slria>, and are decussated by depressed lines of growth. 



Found in the London Clay at Barton Cliff. 



4. F. CONIFERUS. — The Pine-shaped Fusus, pi. XXXVI. 

 fig. 1,2. 



Pusiu conijerus. Sowerby, Min. Conch. II. p. 19J, pi- 187, 



Shell greatly elongated ; spire consisting of six or seven 

 inflated, deeply divided volutions, slightly flatteded above, and 

 terminating in an acute apex ; body and beak with twelve or 

 thirteen spiral, distant, narrow, and slightly elevated ribs, the 

 volutions of the spire with four or five only, the intervals with 

 numerous close-set, irregular, slightly undulating stria', crossed 

 bv distant, longitudinal, unecjually elevated undulations, which 

 arc obsolete on the upper part of the volutions; aperture oblong- 

 ovate, about half the length of the shell, wide above, narrowed 

 below, and ending in a short, wide canal; iimer lip smooth and 

 narrow ; outer lip sharp and even on the edge. 



The volutions of the spire appear as if they were tubereulate, 

 from the ribs passing over the longitudinal undulations, which are 

 more prominent than on the body. 



Found at Highgatc Hill. 



.O. F. STBiATUs The Striated Fusus, pi. XXXVI. fig. 



2G. 



Murex striatus. Sowerby, Min. Conch. I. p. 61, pi. 22, fig. 

 1,2,3. 



Ventricose ; spire short, being not quite a fourth of the length 

 of the shell, consisting of five or six rounded volutions, and ter- 

 minating in a somewhat obtuse apex ; the whole shell covered 

 by numerous, distant, rounded, and rather flattened narrow 

 transverse ribs, with from three to five fine, parallel, but not 

 very equal stria?, occupying the intervening spaces ; these are 

 crossed by obsolete lines of growth and stri;e ; aperture semi- 

 ovate, rounded above, and rather narrow below, and ending in 

 a short, wide, and nearly straight canal ; inner lip smooth and 

 broadly reflected on the columella, which is widest above, and 

 contracts as it descends, with a duplicature behind at the beak ; 

 outer lip smooth and even. 



This shell varies in size from three to four inches and a quarter. 



Found in the Crag-pits of Suffolk and Essex, and at Holy- 

 well, near Ipswich. 



G. 1". CAKINATUS. — The Keeled Fusus, pi. XXXVI. fig. 

 45. 



Murex alriatus, variety a carittalus. Sowerby, Min. Conch. 

 II. p. 13, pi. 109, fig. 1. 



Oblong-ovate; spire short with four volutions, terminating in 

 an obtuse apex, body with six or seven rounded and prominent 

 transverse ribs, and two on the volutions of the spire, inter- 

 vening spaces covered with irregular spiral stria?; crossed by 

 nearly obsolete, longitudinal wrinkles and lines of growth ; aper- 

 ture oblong-ovate, slightly pointed above, and terminating in a 



short, slightly oblique, open canal ; pillar lip smooth and broadly 

 reflected on the columella ; outer lip regular and rather blunted 

 on the edge. 



Found in the Crag pits of Essex and Sussex. 



This species is liable to considerable variety in the disposition 

 and character of its transverse ribs. 



7. F. EniiANS — The Wandering Fusus, pi. XXXVI. fig. 

 33, 34. 



r'ltsus ei-ra)i.t. Sowerby, Min. Conch. IV. p. 139, pi. 400. 

 Strombus ei-rajis, Brander, Foss. Hant. p. 23, pi. 2, fig. 42. 



Oblong-ovate ; spire acute, subturreted, and of medium 

 length, consisting of six volutions flattened above and ending in 

 a pointed apex ; body, with two large prominent, and several 

 lesser intermediate transverse ribs ; the whole shell covered by 

 fine s])iral stri.i;, these decussated by minute, longitudinal lines 

 of growth, which are most conspicuous above the larger ribs ; 

 aperture oblong-ovate, narrowed above and below, ending in a 

 nearly straight, slightly compressed canal ; columella nearly 

 straight ; the inner lip smooth ; outer lip thin, angular above, 

 and waved below. 



Found at Ilordwell and Barton Cliffs, and it ha.s also been 

 discovered at Slubbington. 



It is distinguished from the following by always having more 

 than one transverse rib, and also by its inferior size. 



8. F. BiFASCiATUS. — The Two-faced Fusus, pi. XXXVI. 

 fig. 43, 44. 



Fusus bifasciatus. Sowerby, Min. Conch. III. p. 49, pi. 

 228. Fleming, Brit. An. p. 352. 



Shell elongated ; spire long, being nearly equal in length to 

 the body, consisting of six turreted volutions, flattened at top, 

 and much produced in the centre, nearly in the shape of a keel, 

 which extends over the centre of the body volution, and termi- 

 nates in the outer lip ; the sides of this carina are nearly equal 

 in inclination ; the whole shell covered by strong, rough, longi- 

 tudinal and transverse stria; ; body somewhat ventricose below 

 the keel ; aperture oblong, widest above, and contracted beneath 

 into a short, nearly straight canal. 



Found at Highgatc Hill, 



9- F. TRiLiNEATUS The Three-lined Fusus, pi. XXXVI. 



fig. 35, 36. 



Murex trilincatus. Sowerby, Min. Conch. I. p. 80, pi. 35, 

 fig. 4, 5. 



Shell considerably elongated; spire short, consisting of five or 

 six not much inflated volutions, and terminating in a rather ob- 

 tuse apex; whole shell covered by numerous, transverse, narrow, 

 projecting ribs, each divided into three thread-like divisions; 

 aperture elongated, pointed above, and terminating below in a 

 straight, short, open canal ; inner lip narrowly reflected on the 

 columella; outer lip thin, even at the edge, with nine or ten 

 folds within, situate a little way from the margin 



■Sometimes extends to upw.irds of two inches in length. It is, 

 however, usually the size of our figure. 



Found in the London Clay at Highgate. 



10. F. CORNEUS. — The Horny Fusus, pi. .\X.XV. fig. 20. 



Murex coriieus. Sowerby, Min. Conch. I. p. 79- |>1. 35. 

 Three upper figures. 



Shell elongated, somewhat slender ; spire long, nearly equal 

 in length to the body, consisting of seven or eight slightly in- 

 flated volutions, terminating in a somewhat obtuse apex ; whole 



