- 289 •- 



form to he l^rp-er, more comnresser! and to hove hif^-her umlDones, 

 fewer and more regularly spaced conoentric lamellae, il 'OrTDip-ny 's 

 snecies ma 'he the sei-s as 2* l''''-malatug {0O''<-'^ ' "^1 ^"^ ) , "•'•icli occurs 



(1). -"-rrr. Acad. Pat. Sci., Philadelphia, vol. 7, v. 1?5, lOr^d; 

 Pos. Kedial Ter. , IT. S., p. 44, pi. SI, fi^. '\ 1Q40 (as 

 Astarte lunulata). 



in the Iliocene and '^liocene as v;ell as in the recent fauiia. '''he 

 differences "between gupnyi and gaadalupensis hold for lunulatixs . 

 The dorsal marrrins of the Oaloosahatchie "!. aou'-us Ball (?.) meet 



(2). loc. cit., p. 1479, pi. 50, figs. 1, '. , 1903. 



at a more acute angle and therefore the umbo is more acute; he- 

 sides the shell is more compressed and the concentric lamellae 

 more rounden. According to Dsll (190."^), Giippy's 0_. martinicensis 

 d'Orhigny from the "Pliocene" of Matura, Trinidad (3) is gur^pyi . 



(?■!. loc. cit., 1874; Oeol. Kep-. , decade 2, vol. 2, p. 42, 1875. 



Occurrence .- Io'"er T.'iocene : Bo'.vrien he's, Bo\7den, Jamaica 

 (Gup-ny and Ball, 1896; Dall , 1903). Pliocene (?). i:atura , Trini- 

 dad (Guppy, 1874, 1375; Dell, 190:^). 



