NORTH AMERICAN CONCHOLOGY. 9 



Barne$$. — Reclamation of Unios: by D. H. Barnes. (Amer. 

 Journal of Science and Arts, 0. S., vol. xiii. No. 2, pp. 358-364. 

 Date of title, Jan. 1828.) 



[This paper forms a criticism of Valenciennes' Uniones in Humboldt and 

 Bonpland's Zoological Observations. — W. G. B.] 



Page. 



359 Unio ovata Val. = U. carlo sus Say. 



3 Dombeyanus = Conf. U. rugosus and IT. undulatus. 



360 verrucosus = T7. verrucosus b. Barnes. 



360 tuberculosus = TJ. verrucosus Barnes (young). 



360 rostratus = TJ. nasutus Sai/ non Lam. 

 3G1 naviformis Lu?n. = U. cylindricus Say. 



361 rectus Lam. 



361 hians = Alasmodonta undulata Say. 



3G3 Anodonta glauca = An. marginata Say, 

 363 purpurea = Alasmodonta. 



Dildrefh. — Observations on, and descriptions of, the Shells 

 found in the waters of the Muskingum River, Little Muskingum, 

 and Duck Creek, in the vicinity of Marietta, Ohio : by S. P. 

 HiLDRETH, M. D. (In the American Journal of Science, 0. S., 

 vol. xiv, pp. 276-291, 1828. With two plates.) 



Unio crasaus. 

 ellipticus. 

 cuneatus. 

 undulatus. 



plicatus. (Var. otundatus teste Barnes. — Eds. Jour.) 

 uudatus. 



verrucosus purpureus. 

 verrucosus albus. 

 nodosus. 

 tuberculatua. 

 rugosus. 

 cylindricus. 

 phaseolus. 



(White var. of cuneatus teste Barnes. — Eds. Joiir.) 

 orbiculatus. 

 foliatus [Ililtlrethl. 



(New aud distinct, Barnes. — Eds. Journal.) 

 alatus. 

 praelongus. 



gibbOBUB. 



Page. 



Fig. 



278 



1 



278 



2 



279 



3 



279 



4 



2S0 



5 



280 



6,7 



2S1 



8 



281 



9 



281 



10 



282 



11 



282 



12 



283 



13 



283 



14 



284 



15 



2S4 



16 



2S5 



17 



28 G 



18 



286 



19 



