Fi. LXXXIV. - Asi.n,,. ,,nn,iuc..r,„r u. sp.. ?. - 1. Shell s,..,, fron, the side: 21 X. 2. bhcl sh., frou, b.lo^^; IS X, 

 . '^..osterin,. par, ol' Ih/ ihl valv- s..,, fro.n inside: U>. X. 4. The lixing spots of ll.e shell nn.selo; n,ht v.lv.. 

 seen fro-n .e.lside: 1 Id ^ . .V l!i..hl 11-1 ;,nlr„,K, seen frnn, onlsidr. 10:, X. f,. Hishl nK,xdl:, s., n Ikmu ,ns„le: 11., X. 



