Monography of the family Unionidæ : or, Naiades of Lamarck (fresh water bivalve shells) of North America ... . iquoideMS,Barne, • me rariitttus-, Lamarck. CONTENT S n ,rT S Fig. I, Unio Mortoni. Plate VI. \ J 2; Unio fragosus, ,, VII. Unio costatus.,, VIII. Unio retusus. ry S Fig. 1, Unio parvus. t m 2, Unioglans. v J Fig. 1, Unio siliquoideus. t )» 2, Unio radiatus. JVo. 3. MONOGRAPHY FAMILY UNION ID JE , OR NAIADES OF LAMARCK, (FRESH WATER BIVALVE SHELLS,) OF NORTH AMERICA, ILLUSTRATED BY FIGURES DRAWN ON STOJME FROM NATURE. BY T. A. CONRAD, CURATOR OF THE ACADEMY OF NATURAL SCIENCES OF PHIL
Monography of the family Unionidæ : or, Naiades of Lamarck (fresh water bivalve shells) of North America ... . iquoideMS,Barne, • me rariitttus-, Lamarck. CONTENT S n ,rT S Fig. I, Unio Mortoni. Plate VI. \ J 2; Unio fragosus, ,, VII. Unio costatus.,, VIII. Unio retusus. ry S Fig. 1, Unio parvus. t m 2, Unioglans. v J Fig. 1, Unio siliquoideus. t )» 2, Unio radiatus. JVo. 3. MONOGRAPHY FAMILY UNION ID JE , OR NAIADES OF LAMARCK, (FRESH WATER BIVALVE SHELLS,) OF NORTH AMERICA, ILLUSTRATED BY FIGURES DRAWN ON STOJME FROM NATURE. BY T. A. CONRAD, CURATOR OF THE ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA, HONORARY MEMBER OFTHE GEOLOGICAL SOCIETY OF PENNSYLVANIA. PHILADELPHIA:J. DOBSON, 108 CHESNUT STREET. LONDON:O. RICH, No. 12, RED LION SQUARE. PARIS:ARTHUS BERTRAND, FILS, RUE HAUTEFEUILLE No. 23. HAMBURG:PERTHES & BESSER, No. 22, AM JUNGFERNSTIEG. E. G. DORSEY, PRINTER. February 1836. //. Z- . . ). Vniofiecterosux, C. «~ VMO fasctoliiS, fiaf- 25UNIO PECTOROSUS. Plate XI.—Fig. Shell elliptical, inflated, moderately thick, yellow-ish or olive, with unequal green rays, the larger rayshaving distant dark spots; anterior side compressed,extremity acutely rounded; ligament margin parallelwith the base; umbonial slope angular; umbo broad,prominent, summit obtusely rounded; beaks distantfrom the anterior extremity; within white, with awide greenish margin; cardinal teeth thick, promi-nent, direct; cardinal plate dilated. SYNONYME. U. pectorosus, Nob. New fresh water shells, p. 37. pi. vi. fig. 1. May, perdix, Lea. Trans. Amer. Philos. Soc. new series, vol. v. p. 72. pi. xi. fig. 31. Sept. Jl. N. S. No. 2102. OBSERVATIONS. This shell has so nearly the outline of ,that I have figured both on the same plate for com-parison. It differs from that species in the rays,dilated cardinal plate, &c. It is allied to U. ovatus,Say, but i
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Keywords: ., bookcentury1800, bookdecade183, booksubjectmollusks, bookyear1836
