130 AMERICAN JOURNAL 



Megerlia truncata, Lin. sp. Fig. 14. 



Anomia truncata^ Lin., Syst. Nat. 1152. Born., Mus. 118, 

 pi. vi, fig. 14. Chemnitz, Conchyl. Cab. viii, 90, pi. 77, 

 fig. 701. Gmel., S. N. 3343. Dillwyn, Rec. Shells, i, 

 p. 292. Poli, Test. Sicil. p. 191, pi. xxx, fig. 16, 17. 

 Terehratula truncata, Retz., Nov. Gen. p. 14. Lam., Hist 

 An. sans Vert, vi, p. 247. Ed. 2, vii, p. 333. Shy. 

 Thes. Conch, vii, p. 354, pi. 71, fig. 64-67. Blainv. 

 Diet, des Sci. Nat. liii, p. 139. Phil., Moll. Sicil. i, p 

 95, fig. 12, pi. vi. Quenstedt, Handb. p. 462, p. 37, fig 

 10. 

 Terehratella truncata, D'Orb., Ann. Sci. Nat. 1848, viii, p. 



m, pi. vii, fig. 11, 12, 16, 37. 

 Terehratula ynoustrosa, Scacchi, Oss. Zool. ii, p. 1. 

 Anomia disculus, Pallas, Misc. Zool. p. 184, pi. xiv, fig. 1, 



1766. 

 Terehratula disculus, Blainv., Diet. Sci. Nat. liii, p. 138. 

 Orthis truncata, Phil., Sicil. ii, p. 69. 

 Terehratula ohlita, Mich., Brach. p. 4. 

 Orthis ohlita, Mich., Faun. Mioc. pi. ii, fig. 21. 

 Megathyris ohlita, D'Orb., Prod, iii, p. 134. 

 Terehratula scohinata, Gmelin, + T. decussata de Blainv. + 



T. irregularis de Blainv. fide Rve. 

 3Iegerlia truncata, King, Permian Foss. p. 145. Dav., Ann. 

 Nat. Hist. 1852, p. 369. Gray, Brit. Mus. Cat. p. 103, 

 fig. 15, 16. Rve., Conch. Icon, pi. xi, fig. 47 a, b, c. 

 Journ. de Conchyl. 1861, p. 133. Woodw., Man. Rec. 

 and Foss. Shells, p. 219, fig. 122, pi. xv, fig. 9. Chenu, 

 Man. de Conchyl. ii, p. 205, fig. 1053-55 (not 1052 -= 

 Kingena lima, Dav.) Angas, Austr. Sh. H. and A. 

 Adams, Gen. Rec. Moll, ii, p. 578, pi. cxxxi, fig. 3, 3 a, 

 3 b, 3 c. Jeffreys, Brit. Conch, p. 22, ii. 

 Hah. Mediterranean and adjacent shores of the Atlantic. 

 Australia (Angas). Smithsonian Cabinet, 14,560, 14,561, 11,- 

 781. 



Woodward's figure (122) of this well known species is not 

 very good. In none of the specimens whicii I have seen does 

 the septum appear so prominently or extend so far beyond the 

 apophyses. 



The collection includes a specimen from New South Wales 

 (Coll. Angas), sent under the above name. The shell and apo- 

 physes presented no constant difference from Mediterranean 

 specimens. The animal was in a perfect state of preservation 

 in both, and I noticed the following difierences, of which only a 

 much larger series would be sufficient to establish the constancy. 



