222 



Voted, that the First Vice President be placed on that Com- 

 mittee in lieu of the President, deceased. 



Dr. Gay announced the donation, by Francis Alger, Esq. 

 of two hundred specimens of Minerals, to be selected from 

 his Cabinet by the Curator of Mineralogy. 



April 21, 1847. 

 Dr. Cabot in the Chair. 



Dr. Gould read descriptions of the following species of 

 Melania, from the Collection of the Exploring Expedition. 



Melania Cybele. Testa ovata, turrita, crassa, fuliginosa, epi- 

 dermide velutina induta ; spira ad apicem valde erosa, anfr. 

 superstit. ad 3 planulatis, superne tabulatis, et pinnis curtis acu- 

 tis arrectis ordinatim disposilis, coronatis : apertura angusta, 

 elongato-ovalis, poslice angulata ; intus livida. Long. 1, lat. f 

 poll. Hah. Feejees, Navigators, &c. 



Probably confounded with M. amarula. That shell is lighter 

 colored, shorter, smoother and destitute of the velvety epidermis : 

 the spines are less numerous, longer and sharper and stand out 

 somewhat from a vertical position : in this species they resemble 

 mural battlements. 



Melania tetrica. Testa oblonga, turrita, ponderosa, fusca, 

 liris paucis cincta : spira truncata, anfr. superstilibus 3-4 convex- 

 iusculis, postice sub-angulatis et spinis validis acutis 5 ad basim 

 decurrentibus armatis, interdum muticis : sutura profunda : aper- 

 tura arete elliptica ; intus livida. Long. 1^, lat. ^ poll. Hab. 

 Feejee Islands. 



More slender than the preceding, and with more convex whorls. 

 It has nearly the same form as M. belUcosa, Hinds, but is larger 

 and has fewer spines. It is especially distinguished by its few 

 stout spines directed outwards. 



Melania Terpsichore. Testa elongato-turrita, solidula, oli- 

 vacea, plngis flexuosis fuscis picta, longitudinaliler creberrime 



