Botany and Zoology. : 437 
the descriptions of new species, and the rest of the volume by obser- 
ide of the United States. Many of the new species described were 
collected by Prof. Wyman in South America. Other South American 
ies, with a few from Asia, were contributed by Mr. C. M. Wheatley, 
and others from Asia by Mr. Taines. 
The number of known species of North American Unionide has been 
by the author, since the publication of his ninth volume, by 
thirty-six, making in all seven hundred and ten ; and still others, Dr. Lea 
observes, are in his possession. 
ides descriptions of the shells and animals, Dr. Lea makes some 
critical remarks on certain subdivisions of the family which have been 
= by Professor Agassiz. 
The Introduction announces that the eleventh volume will consist 
chiefly of indigenous species of Unionide and Melanide, but with some 
exotic species of the former, descriptions of which have already appeared 
at various times in the Proceedings of the Academy. 
by We may here add, that, in January last, Dr. Lea declined being a can- 
didate for re-election to the office of President of the Academy; where- 
“That this Academy hereby expresses its most grateful sense of the 
entire faithfulness, impartiality, and eminent ability with which Dr. Le 
—otarsetbongg the duties of President during the lengthened term of his 
ment of the interests of science in the United States. 
8. List of the Polyps and Corals sent by the Museum of Comparative 
: : : E 
Zoology, Cambridge, Mass.—This “list” is much more than a list, it 
Sontaining notes by the author at considerable length on the characters 
md synonymy of many of the species, and descriptions of a number o 
‘Species, “The author shows a thorough acquaintance with the de- 
torte which has been under his charge in the Museum of Compara- 
i Zoology at Cambridge, and contributes much in his paper toward 
atin of this department of zoology. 
G rospectus of a Monograph of the Tetraonine, or Family of the 
gang ; issued by the author, D. G. Extrot.—* It is proposed to com- 
lifes, very shortly the publication of this work, including plates with 
l of this family, especially with that portion of it comprising 
| = ‘luding the great number received by the Smithsonian Institution, 
its various expeditions,) the author trusts that he will be enabled 
— some new ig ) 
