260 



Dr. Jackson presented, in the name of Amos Otis, Esq., 

 a brick of peculiar shape, and apparently imperfectly- 

 made, which was found at Monamet, near Sandwich. 

 It came from a locality, interesting in a historical point 

 of view, as having been the spot where the Pilgrims 

 built a trading-house in the year 1627. The thanks of 

 the Society were voted for the gift. 



Mr. C. K. Dillaway exhibited the tooth of a Narwhal, 

 [Monodon monoceros, Lin.) It was about seven feet in 

 length, and a very beautiful and perfect specimen. 



Messrs. Thomas R. Sullivan and Joseph Willard, Jr., 

 were elected Resident Members. 



September 2, 1857. 



The President in the Chair. 



Mr. Theodore Lyman read the following paper on a 

 new species of Coral : — 



In October, 1848, and April, 1849, Milne Edwards and Jules 

 Haime published two monographs on the Astreida;, (Annales des 

 Sciences Nat. S^""*^ Serie, torn. 10 et 11.) Under this name they 

 included only a part of the Astra3ans of previous authors, namely, 

 such only as had platforms or dissepiments between the lamellie, 

 and these they call traverses. They further divided the family 

 into two sub-families, Eusmilinos and AstreinjB ; the former com- 

 prising those with smooth-edged lamellje ; the latter, those whose 

 lamella3 bore teeth. Descending to genera, they subdivided 

 these to a very great extent. Dana's Genus Euphyllia is sepa- 

 rated into nine groups ; Lamarck's Genus Astrosa, as understood 

 by Dana, is multiplied to nearly twenty ; and, in addition, there 

 are added to the family some forty or fifty quite new genera, 

 many of them comprising only fossils. To sum up ; the family 



