CerdiLTin vennstum Oe:^-h^ 187:^, . Am. Philos. Soc, G'-r., 



voi. ir, ij. .'.'1, ' _. verms far: ^------■■.^^ 1361. 



Gardiimi ( laevioarilixTa ) serratiiiu la.. , , 1381, Jour. Acad. 



^"at. Sci., Pliilar'.elpliia, ^n^ ser., vol. 8, p. 7.74. 



Q.nrdinia serratiim linric -a, .^all, 1 1, ^llII. ::..- . Oonpt. Zool. 

 Harvard, vol. 9, p. 1?,1; 1886, vol. 12, p. S70. 



O.qr^AiTm R erratum Lin:. , C>T:ippy and Dall, 1895, ^"roc. U. 3. lat. 



F-i'c;., vol. 19, n. -'-'-. 



Jardlnm f Laevicarri iiTm ) serratum linneaus, Lall, 1900, Trans- vVag- 



ner ?ree Inst« Sci., Philadelphia, vol. 5, pt. 5, "o-. 



1110-1111. 

 Jardj-gm ( Laevicar'^itiin ) serratimi Linnaeus, Dall, 1901, Proc. U. 3, 



ITat. Mus., vol. 2 3, p. -587. 

 Qardium ( Laevicardium ) serrat^xm Linnaeus, Dall and impson, 1902, i'''*^ 



Bull. U. S. Pish Oomm., ' . -";0, pt. 1, p. 489. 

 Laevicardium serratum (Linnaexis ) Bo-:, 1906, Bol. Inst. Geol. 



niexieo, no. 22, p. 30, pi. 11, i'ig. . 

 ? 3ardium ( Laovioardii.m ) dalli Toula, 1908, ." . K.-k. geol. 



Reichsanstalt, vol. 58, p. 722, pi. 27, fir-. G (not C. 



( Traohyoarni,j::i } aa-.li lieilprin. 1887). 

 Qardium f laevioardiujii ) serratnjn Linnaeus, Brown ilsbry, 1911, 



Proc. Acad. Ilat. Sci., Philadel^^hia, vo': . 63, p. 367. 

 ? '3ardium ( Laevicarlium ) -'^.al li J- .-la, ^ Pilsbr;-, 1911, 



ir^em. 



Dc scripti-u .- The speciniens referred! to this species arc of 

 medium size, frf^ile, v/ell inflate"^, usually obliquely produce""' 



