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DESCRIPTION OF CYMBIOLA MANGERI, A SUPPOSED NEW 

 SPECIES FROM THE FALKLAND ISLANDS. 



By H. B. Preston, F.Z.S., etc. 

 Read 10th May, 1901. 

 The nearest allies of this form are C. ancilla, Sol., C. Magellanica, 

 Cliem., and C. Brasiliana, Sby. It differs, however, from C. Brasiliana 

 and C. Magellanica by the length of its spire and by the absence of 

 nodulations. Moreover, C. Magellanica has very distinct, though 

 irregular, colour-markings ; while the present species is entirely 

 destitute of painting, and presents a very worn and weathered appear- 

 ance, which seems to be quite normal and is exceedingly characteristic. 

 The form of C. Mangeri distinguishes it readily from (J. ancilla. 



/ 



Cymbiola Mangeri, n.sp. 



Diagnosis. — Shell irregularly fusiform ; spire long and deformed ; 

 whorls about six, sharply increasing, rounded, marked with very 

 irregular growth-lines, but destitute of other sculpture ; sutures very 

 irregular ; texture of the shell rather horny, or cretaceous, externally 

 weathered, interior glazed ; columellar folds three ; callus broadly 

 expanded. Height 103, breadth 56 mm.; length of aperture 78, 

 breadth 32 mm. 



Hob. — Falkland Is. 



The type has been acquired by the British Museum. 



It is with great pleasure that I associate with this species the name 

 of my friend Mr. W. T. Manger, to whose kindness I am indebted for 

 the specimen. 



