Proceedings. 6s 



fawn yellow colour, the type being grey. This variety might be 

 termed O. gibbosa flavesce?is. A specimen was also exhibited 

 with the basal fasciole extended across the body of the shell, 

 no other signs of malformation being evident, thus present- 

 ing a very beautiful effect. This had been obtained at the 

 sale of the Dennison collection, in 1865, by Mr. Melvill, who 

 had only seen one other similar instance since, in some 

 public museum, no other shell in his experience ever 

 having been subject to such a monstrosity. This speci- 

 men he had for years differentiated in his cabinet as 

 var. monstr. mediocincta. The genera Agaronia (Gray) 

 and Olivancillaria (Bolteri) do not at present seem well 

 defined. Oliva nebulosa and acuminata, both nearly allied 

 to the shell under discussion, were classed by Tryon 

 under Agaronia in company with A. hiatula, to which they 

 are not closely allied. 0. nebulosa especially comes so near 

 to some forms of O. gibbosa, less inflated than usual, as to 

 suggest a possible identity, but there are certain fine dis- 

 tinctions still to keep them separate. At all events the two 

 shells should be placed in the same genus. 



General Meeting, November 12, 1889. 



Professor Osborne REYNOLDS, M.A., LL.D., F.R.S., 

 President, in the Chair. 



Mr. W. J. WlLLANS, of Manchester ; Mr. H. E. Hadlev, 

 Demonstrator in Physics, Owens College ; and Mr. C. J. 

 Hall, Doc. Mus. (Lond.), of Southport, were elected 

 ordinary members. 



