-■?A - 



Genus I^'!^TA:]A TTirton. 

 Sectioi- Lyrtaea s. s. 



■'-':TAEA LILIOICI Dall. 



"::-rtaea linionlg-ga Dall. lOn."^ Trans. V/agner ?ro^ ^.-... b. Sei., 



Philadelphia, vol. S, Tot. 6, p. 1358, pi. 52, fig. 10. 



SeF^oription .- "Shell small,, thin, suh equilateral, somewhat 

 longer than high, only moderately convex, though hardly com- 

 pressed; healcs snBll and low; liinule depressed, narrow, suhlance- 

 olate, small; surface gov ere "^ v^ith fine, sharp, thin, elevated, 

 concentric lamellae, separated "by wid r interspaces and m.ore 

 elevated near the dorsal margins, eSTeoiallj; behind the beats, 

 where in ■'Terfect specimens five or six of them are --■-'^-■'— q-"' ■^ s 

 small leaflets, "rhich, however, are usua'^ly broken off; hinge 

 with a single rig^'t am t\70 left cardinal teeth, the laterals 

 obsolete; sop'^^ r-^rmal; the margin of' the valves entire. Alt. 

 8, Ion. 9, diam. 4 mm." 



"This species, thouQ-h very similar, is more elongated, less 

 elevated, and more densely lamellose than "". carta [ponr^d (l)- 



(1). Am. Jour. Gonch., vol. 1, pp. 8, 139, 212, pi. 20, fi:^. l--f, 

 1865. 



