54 BIBLIOGRAPHY OF PUBLICATIONS OF ISAAC LEA, LL. D. 



64. 



1851. Lea, Isaac. [Ou the fossil bones of a Reptilian Quadruped from Upper Mil- 

 ford, Lebigb Co., Pa.] <^Proe. Acad. Nat. Sci.,v,Y>]). 171-172. No. 8, March 

 and April, 1851. 



Communication made April 8, 1851. (See Proc. Acad. Nat. Sci., Pkila., v, 1851, p. 211.) 

 In this paper Mr. Lea proposed the specific name Pennsylvanicus for these bones, but 

 deemed it adviaablo to postpone a geneiic one until a further examination shall prove the 

 diagnosis, and then apply a descriptive one. The generic name f?cp«.v«fwn(« was proposed 

 by Mr. Lea for this animal May 20, 1851. See No. 67. 



65. 



1851. Lea, Isaac. [On a communication from Prof. Agassiz to the Natural History- 

 Society of Boston relating to the soft parts of American fresh water Mol- 

 luscs.] <^Proc. Avier. I'Mlos. Soc, v, pp. 187-189, No. 46, Jan. -June, 1851. 



Remarks made before the American Philosophical Society March 21, 1851. (See Proc. 

 Amer.Philos. Soc.,Y, 1851, T). 212.) 



In this paper Mr. Lea calls the attention of the American Philosophical Society to several 

 papers of his read before the Society and published in its Transactions, describing several 

 of the important parts mentioned by Prof Agassiz in his communication to the Boston So- 

 ciety of Natural History. See also No. 74. 



66. 



1851. Lea, Isaac. [Ou the great size of certain Naiades from the neighborhood of 

 Cincinnati, Ohio.] <^Proc. Amer. Philos. Soc, v, pp. 191-19:^, No. 46, Jan.-June, 

 1851. 



Communication made April 4, 1851. No. 4C, Jan.-June, 1851, of the Proceedings received 

 by the Smithsonian Institution on or before July 16, 1851. {See Proc. Amer. Philos. Soc, v. 

 1851, p. 212.) 



The weights of the hard parts of the following species are given : 



TTnio mtdtiplicatus. 



Unio crassidens. 



TTnio crassus. 



Margaritana complanata. 



TTnio pustidosus. 



TTnio rmdulatus. 



TTnio alatus. 



Margaritana undidata. 



tfnio tuberculatus. 



Tfnio verrucosus. 



TTnio lacrymosus. 



TTnio obliquus. 



TTnio rectus. 



TTnio ruhiginosiis. 



TTnio securis. 



67. 



1&51. Lea, Isaac. [The generic name Clepsysaurus applied to the fossil reptile dis- 

 covered by Dr. J. Y. Schelley in Upper Milford, Pa.] <^Proe. Acad. Nat. Sci., 

 PMIa.,Y, p. 205, No. 9, May and June, 1851. 



Remarks made before the Academy Natural Science, Philan, May 20, 1851. No. 9, May and 

 June, 1851, of the Proceedings was received by the British Museum on or before October 7, 

 1851. (See Proc. Acad. Nat. ScL, Phila , v, 1851, p. 307.) 



Clepsysaurus, Lea, n. g 205 



Clepsysaurus pennsylvanica, Lea 205 



The specific name was proposed by Mr. Lea April 8, 1851. (See No. C4.) 



68. 



1851. Lea, Isaac. [A new locality for Zircon, Reading, Pa.] <^Proc. Acad. Nat. Set., 

 Phila., Y, p. 211, No. 9, May and June, 1851. 

 . Verbal communication made before the Academy Natural Sciences, Phila., June 3,1851. 



(See Proc. Acad. Nat. Sci.. Phila., v, 1851, p. 307.) 



