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OBSERVATIONS 



GENUS UNI 



TuiiETUEit wrrii 



DESCllIPTIO-NS OF NEW SPECIES, THEIll SOFT PAKTS, AM) K.MJiilYOXJC F,,!!M,., IX 

 TFTE FAMILY UNIONID.T}. 



RKAD lirU'ORl-: THI-; ACADEMV op natural SCIENTGES of I'Hir.ADICMMllA AM) 



I'unr.TSHKD IX TriKiu tourxal. 



SAAO LEA, LL. D, 



I'llESIDEXT OF THE ACADEMY OF XATUIlAr, SCIKXCES OF 



WITIf T\VI-:\TV-|-nK l'l,\TKS. 



A'OL. r. f - 



!■ H 1 I. A I) E L r H 1 A : 



I'lnXTIil) I-'UIJ THE AUTllOH. 



