72 



MOLLUSCA. 



Turbo. 



apex ; aperture ovale, rounded beneath, and contracted and 

 pointed above; outer lip thin, even; pillar lip slightly reflected 

 at the base. 



Found by Dr. Fiiton in the Green Sand of Blackdown. 



6. P. STRIATA The Striated Phasianella, pi. XXXVII.* 



fig. 9, 10. 



Phasianella striata. Sowerby, Geo. Trans. IV. 2nd series, 

 p. 343, pi. 18, fig. 15. 



Shell elliptical ; body very large in proportion to the spire, 

 which is very short, consisting of four abruptly tapering, slightly 

 inflated volutions, terminating in an acute apex, and occupying 

 not more than a fifth of the total length of the shell ; entire 

 surface covered with strong, regular spiral stria- ; aperture oval, 

 rounded below, and acute above; outer lip plain, and thin; 

 inner lip slightly reflected on the columella. 



Found by Dr. Fitton in the Green Sand of Blackdown. 



7. P. FORMOSA. — The Handsome Phasianella, pi. 

 XXXVII.* fig. 7, 8. 



Phasianella firmosa. Sowerby, Geo. Trans. IV. 2nd series, 

 p. 343, pi. 18, fig. 14. 



Shell oblong-oval, subcyhndrical, smooth ; body very large ; 

 spire very small, occupying about a fifth of the entire length of 

 the shell, consisting of four, not very oblique, slightly inflated 

 volutions, and well defined by the suture line ; base with a few 

 stria", conforming to the outline of the pillar lip ; aperture 

 elliptical, slightly contracted below, and acutely pointed above; 

 outer lip thin, and even ; pillar lip slightly reflected on the 

 columella. 



Found by Dr. Fitton in the Green Sand of Blackdown. 



Fig. 7 is the natural size of the species. 



Genus XXXI TURBO — Litmceus. 



Shell turbinated, spiral, and solid; spire most com- 

 monly of mediocre leny^tli, sometimes very short ; aper- 

 ture nearly circular, but sometimes a little transverse 

 and slightly trapizoidal, with the outer lip acute, but 

 not reflected, and subefluse at the base; operculum solid, 

 testaceous, covered internally with a spiral horny plate, 

 and extremely variable in its aspect. 



1. T. CARiNATLs The Keeled Turbo, pi. XXXVIII. fig. 



30 and 37. 



Turbo carinalus. Sowerby, Min. Conch. III. p. G'J, pi. 240, 

 fig. 3. Fleming, Brit. An. p. 301. 



Shell conical, oblong-ovate ; body large ; spire rather short, 

 consisting of five or six deeply divided volutions ; whole shell 

 covered with many strong, spiral, crenulated ridges ; the centre 

 volution provided with a prominent, thick spiral carina; aper- 

 ture slightly ovale. 



Found in the Green Sand. 



2. T. MUBlCATUS. — The Prickly Turbo, pi. XXXVIII. fig. 

 41,42. 



Turbo muricalui. Sowerby, Min. Conch. III. p. 70, pi. 

 240, fig. 4. Turbo, Smith, Strat. Syst. p. 49. Strata identified, 

 p. 20. Coral Hag, fig. 1. Phillips, Geo. of Yorkshire, I. p. 

 102, pi. 4, fig. 14. 



Shell short, subconic ; body large, about double the length 

 of the spire, with four moderately ventricose volutions, which 

 suddenly decrease in size, and terminate in a sharp apex; bodv 

 considerably inflated ; surface invested with many spiral, muri- 

 cated, regular ridges, which are equal in breadth to the inter- 

 mediate spaces; the spines are short, scmicylindrical, and hollow, 

 forming a beautiful fimbriated appearance on the margin of 

 the outer lip, which is plaited internally ; inner lip reflected on 

 the columella, with a longitudinal indentation, or subumbilicus, 

 behind it, at the base of the sliell. 



Found in the Coral Rag at Steeple Ashton. 



3. T. OHNATUS.— The Embellished Turbo, pi. XXXVIII. 

 fig. 43, 44. 



Turbo ornatus. Millers, MSS. Sowerby, Min. Conch. III. 

 p. 69, pi. 240, fig. 1, 2. Fleming, Brit. An. p. 301. 



Shell conical, subturreted ; body and spire of nearly equal 

 length ; the latter consisting of four or five volutions, termi- 

 nating in a rather obtuse apex ; whole shell longitudinally 

 striated ; each volution furnished with three or four strong, 

 acutely tuberculatcd spiral ribs, the middle one being consider- 

 ably larger than the others ; tubercles a little flattened, and 

 connected, in transverse ridges, by narrow carina; ; base pro- 

 vided with three or four small concentric ridges, with blunt 

 tubercles ; aperture entire, and nearly orbicular. 



Found in the Lower Oolite at Dundry. 



4. T. MONiLiFERUs^-The Collared Turbo, pi. XXXVIII. 

 fig. 48, 49. 



Turbo tnonUiferus. Sowerby, Min. Conch. IV. p. 131, pi. 

 395, fig. 1. Fleming, Brit. An. p. 301. 



Shell conical, short ; body and spire of nearly equal length ; 

 the latter consisting of five slightly inflated volutions, separated 

 by a channelled suture ; each volution provided with a granu- 

 lated fillet on its superior margin, and the spire with very small 

 granules; whole surface furnished with many wide, equidistant, 

 prominent stria?; with a prominent base, which is simply and 

 finely striated; provided with a large, wrinkled umbilicus, which 

 is granulated within, and undulated on its edge; aperture nearly 

 orbicular. 



Found in the Green Sand at Blackdown. 



5. T. suLCATUs. — The Ridged Turbo, pi. XXXVIII. fig. 

 31, .33. 



Turbo sulcatus. Pilkinlon, Linn. Trans. \ II. p. 118, pi. 11, 

 fig. 9. Fleming, Brit. An. p. 301. Turbo sculplus, Sowerby, 

 Min. Conch. IV. p. 132, pi. .395, fig. 2. 



Shell conical ; body somewhat longer than the spire, which 

 consists of four abruptly tapering, inflated volutions, termi- 

 nating in an acute apex, and deeply divided by the canaliculate 

 sutural line; whole shell invested by strong, deep spiral grooves, 

 crossed by minute longitudinal stria; ; base rounded, provided 

 with a small umbilicus, near to which is a recurved expansion ; 

 aperture nearly circular, slightly angulated on the upper part, 

 corresponding with the upper edges of the volutions ; outer lip 

 thin, and slightly serrated on the margin ; inner lip a little 

 reflected on the columella, narrow above, and becoming broader 

 as it descends. 



Found in the London Clay at Barton Cliff. 



6. T. coNicus.— The Conical Turbo, pi. XXXVIIL fig. 

 50,51. 



