94 Rev. R. T. Lowe on the Discovery of Helix coronula recent. 



peculiar globosely conoidal shape, elevated cupola or dome-like 

 spire, flattened volutions, and distinct fine superficial spiral lines 

 (like those of the common normal recent var. a), but passing so 

 gradually into the flatter normal forms of /3 major, through cer- 

 tain intermediately convex examples of the latter, that, consider- 

 ing also the width of varietal range exhibited already under H. 

 calva, I cannot venture to go further than regard it as consti- 

 tuting at most a third var., 7. galeata, of that species. 



Several examples of this fine and interesting shell were found, 

 late in the spring of 1861, by a man employed in collecting for 

 the Baron along the new Levada da Fajaa dos Vinhaticos, in the 

 Ribeiro do Fayal, towards or near the place where I discovered, 

 two years ago, H. delphinuloides (Ann. Nat. Hist. July 1860). 



2. The discovery of two recent living examples, in Madeira 

 proper, of H. coronula, Lowe (a shell only hitherto known as a fossil 

 of the South Deserta, or Bugio) is a second and still more im- 

 portant addition, by the Baron's persevering industry, to the 

 existing Molluscan Fauna of Madeira. They were found, two 

 or three months ago, along the south coast of the island, to the 

 east of Funchal, "on declivities above the sea between the 

 Garajao or Canico and S ta Cruz," unwittingly, by a collector 

 employed by the Baron de Paiva, who himself happily detected 

 them amidst a miscellaneous heap of various other living Ma- 

 deiran submaritime Pneumonobranchiates, consisting chiefly (as 

 I myself observed) of Achatina tornatellina /3, Helix bifrons, H. 

 polymorpha «, Cyclostoma Moniziana, &c, such as occur usually 

 along the south coast of Madeira to the eastward. One of the 

 examples is considerably more convex than the other, which is 

 also frequently the case in the South Desertan fossils, and is 

 pale chalky white, like H. tiarella, Webb ; whilst the other is of 

 a brownish flesh-colour, like H. delphinuloides usually. The 

 sculpture altogether, and especially the spiral grooves and can- 

 cellations underneath, are in both examples less distinct than in 

 the fossil shells from the Bugio ; but they are both more deci- 

 dedly bicarinated than the latter. The animals were almost 

 colourless or pale subpellucid whitish ash, tinged with very pale 

 ochraceous or raw sienna, strikingly different from the peculiarly 

 dark or blackish animals of H. tiarella. These two most rare 

 and interesting shells have been generously added by their 

 fortunate discoverer to my own collection. 



On revision, therefore, of the list in my Appendix above quoted 

 of the Canical fossils, the only absolute corrections will be the 

 insertion of H. tiarella, Webb, in the right-hand column of re- 

 cent homologues at p. xiii., reading, moreover, H. arcinella a &/3 

 for H. fausta /3. minor and 7. minima, and Achatina Cylichna for 

 A. truncata (a name preoccupied by Gmelin) in the left-hand 



