PLATE CLIX. 



TURBINELLA Pyrum : testa supernfc ventricoso-clavat& pyriformi 

 caudata , albido fulva, maculis spadiceis puncti- 

 formibus picta ; spira parva, mucrone tenui ter- 

 minate : apice mamillato ; cauda longiuscula 

 striata; columella quadruplicate. Lamarck An. 

 sans Vert. T. 7. p. 107. 



In an early part of the present publication (plate 22) will be 

 found a figure and description of that very rare and highly appre- 

 ciated testaceological production, the sacred Chank shell of the 

 Asiatic Indians. That shell is a reverse growth of the kind now 

 before us, and in a more advanced or adult state ; when young, its 

 colours, instead of being a sordid or yellowish white, inclines to ful- 

 vous, and the larger wreath is marked with regular equidistant circles 

 of chesnut-coloured dots, as represented in the annexed plate. Some 

 remains of the fulvous colour of this shell, and traces of the chesnut 

 coloured spots by which it is encircled, are perceptible in the examples 

 of larger growth, but the shell appears in those respects to less advan- 

 tage in the adult than in the younger state, and it has for this reason 

 been deemed adviseable to introduce the present figures of its early 

 growth, in order to render the history of that highly estimated curiosity, 

 the Indian Chank shell, as complete as might be desired. It will be 

 borne in mind, that the Chank shell is one of that kind which concholo- 

 gists denominate reverse shells, that is, having the mouth on the left 

 side of the shell, and the wreaths originating from the mouth in conse- 

 quence turning the reverse way from the generality of turbinated 

 shells : the example now before us presents one of ordinary growth, 

 having the mouth placed on the right side instead of the left. 



