APPENDIX. 267 



the more typical form in the following particulars. Its colour is 

 deep fulvous ; its volutions are of rather quicker enlargement, 

 and not so decidedly swollen ; the breadth of the penult turn is 

 not quite double its height. There is no well pronounced chink, 

 as the pillar lip, instead of being elevated, is attached, or very 

 nearly so, and connected by a layer of white shelly matter (or 

 enamel) with the outer lip. In several of our specimens, which 

 were received from Mr. Pickering, as taken at " Grays ; " the 

 apices were truncated. 



Vol. iii. p. 139. Turbo disjunctus. 



Fleming has likewise figured this shell in the " Edinburgh 

 Encyclopaedia " (vol. vii. pt. 2, pi. 205). His representation seems 

 derived from Laskey's drawing, but shows the whorls more regu- 

 larly and compactly coiled, so as to approach still nearer to 

 ventrosa. 



Vol. iii. p. 154. Jeffreysia opalina. 

 Plate CXXXIII. fig. 6, and (animal) Plate MM. fig. 2. 



Having now received examples of this Ampullaria-like shell, 

 that measure nearly two lines in length, we are enabled to amend 

 the description and figure we had derived from immature indi- 

 viduals. When adult, the shape is ovate-conoid, and the fragile 

 shell, which is composed of four ventricose coils, that swell out so 

 abruptly from the suture, as to produce an obscure shoulder 

 near the outer lip, exhibits some minute and crowded longitu- 

 dinal wrinkles on the upper part of the body-whorl, which latter 

 occupies three-fifths of the entire length. The penult turn 

 displays a rapid increase of growth. The apex is blunt, but is 

 symmetrically coiled. The large mouth, which is about as long 

 as the spire, is of a subpyriform ovate figure. The outer lip juts 

 abruptly from the body. The pillar lip is white, continuously 

 oblique (not twisted), not to be called broad, and more or less 

 curved at its anterior extremity. The chink is wholly or par- 

 tially concealed. 



The animal has been examined by Mr. Alder and by Mr. 

 Clark ; it proves to be a true Jeffreysia, differing from the dia- 



