OBSEBVED AT MOGABOR. 189 



in a very similar coudition. Instead of being as usual plain- 

 coloured, it is mottled all over, like young C. Neptuni (Gm.), 

 with suffused paler spots. This example was erroneously named 

 by me also at the time (as were others subsequently by D'Or- 

 biguy) V. porcina, Lam. ; and it is the very shell referred to by 

 tliat name in a MS. list of all the shells sent to me by "Webb in 

 1829, with which, at his request, I furnished him, and which he 

 subsequently, it appears, entrusted to M. D'Orbignj^ 



The only Cymhium I could obtain in Lanzarote, diu'ing a sojourn 

 there from about the middle of February to that of April 1859, 

 was this C, ruUginosv/ni (Swains.), var. jG, of which three fine 

 specimens, in fresh, though most unsavoury condition from still 

 containing the remains of their inhabitants, were presented to me 

 by the excellent and active British Vice-Consul at Arecife, 

 J. T. Topham, Esq., whose kind and efficient attentions claim the 

 grateful recollection of all visitors to Lanzarote. They had been 

 brought as usual by the fishermen from the opposite coast of 

 Africa ; and I could obtain no reliable evidence that the shell was 

 ever really taken living on the shores of either Lanzarote, Puerte- 

 ventura, or any other of the Canary Islands. 



Of the three existing Cymbia inD'Orbigny's collection, the two 

 larger agree precisely witb my Lanzarotan examples. The third, 

 marked Voluta Neptuni, is merely, in my judgment, a smaller, 

 rather more ventricose, or broader and shorter, form than usual of 

 the same, such as I possess a large example of amongst my Lan- 

 zarotan specimens. It is much too solid, thick, and heavy for a 

 V. Neptuni or Navicula of its size, besides being quite differently 

 shaped, and having a deep narrow sutural channel, with the edge 

 inflexed, round the distinct mammilla, and the shoulder rounded. 

 The pillar is 3-plaited. There can remain, I think, no reasonable 

 doubt of its being anything but a dwarf adult state of C. ruhigi- 

 nosum, jj. It is a wretched, battered, old example, ground or 

 worn down and bleached perfectly white. 



No example marked by D'Orbigny V. prohoscidalis, or other- 

 wise in any way entitled to that name, exists in his Canarian col- 

 lection ; and I also never received from Webb any shell rightly 

 referable thereto. This throws much doubt on D'Orbigny 's 

 enumeration of it as a Lanzarotan species found by "Webb, and 

 raises strong suspicion of confusion or mistake, arising possibly 

 from some previous misnomer of one of the three or four examples 

 of C. rtibiginosum (Swains.), var, ft, actually obtained by Webb in 

 Lanzai'otc. 



