CALL-PA RVUS GROUP OF UNIONID.'E. 47 



Unio texasensis Lea. 



(Read March 24, 185;.) 



"Obsorviitions on the Genus Unio" Vol. VIII, p. 39, PI. 

 LXI, Fig. l«i. 



Unio bairdianus Leu. 



(Read April 7. 1857.; 



"Ohsorv.'itioiis on the Genm Unio" Vol. VIII, p. 42, PI. 

 LXI, Fig-. 18(5. 



Unio (jramdutiis Leu. 



(Read March 5, i860.) 



''Observations on the Genus Unio" Vol. XI, p. ;32, PL 

 XVI, Fig. 46. 



Unio gerinanus Lea. 



(Read February 5, 1861.) 



"Observations on the Genus Unio" V'ol. XI, p. 53, PI. 

 XIX, Fig. 54. 



Unio bealii Lea. 



(Read June j, 1862.) 



"Observations on the Genus Unio, Vol. IX, p. 2(5, PI. 



XXX, Fig. 273. 



Unio marginis Lea. 



(Read >.'ay it, 1S65.J 



"Observations on t!i3 Genus Unio" Vol. XII, p. 15, PI. 



XXXI, Fig. (iy. 



Unio cromu'ellii Lea. 



(Read May i6. i86=.l 



"Obssrvatioas on th • Gewis Unio" Vol. Xll, p. 18, PI. 

 XXXI, Fig. 54. 



Unio cylindreUus Lea. 



(Read June 2, 1868.) 



"Observations on the Genus Unio, Vol. XII, p. 68, PI. 

 XLVIII, Fiir. 121. 



