1864.] ' SENATE— No. 22. 51 



C. F. Hartt, 2 species, 25 specimens, Massachusetts Bay. 

 Dr. J. W. Paige, 2 species, Seabrook Island, S. C. 

 A. Agassiz, Yarmouth, 1 species; Nahant, 6 species. 

 Making a total of 240 species, 1,912 specimens. 



Report on the Acalephs, by A. Agassiz. 

 The only large collection which has been added to this class, 

 is the valuable series of Hydroids collected by Dr. Stimpson on 

 the coasts of Great Britain, which contains nearly all the more 

 m common species of those shores. The specimens which have 

 been added have all been catalogued by Mr. A. Agassiz. 

 Mr. Burckhart has made a magnificent series of diagrams of 

 Acalephs, for exhibition above the glass cases. The following 

 are the additions made in this class : — 



Dr. W. Stimpson, Smithsonian ; 21 species, from Oban ; 5 species 

 from Liverpool ; 5 species, from Milford. 



Dr. Sternbergh, Panama, 1 species, from Panama. 



C. Cooke, Salem, 30 specimens of Physalia, from Mozambique 

 Channel. 



C. F. Hartt, St. John, 2 Lucernariae, Chelsea Beach. 



A. S. Bickmore, 2 Physalia?, from Beaufort, N. C. 



Professor F. Poey, Havana, 1 species, Havana. 



A. Agassiz, Cambridge, 4 species, 63 specimens, Nahant. 



Making a total of 40 species. 



A small collection of seven species of Hydroids has been 

 sent to the Lyceum of Natural History at Williamstown. 



Report on the Collection of Corah and Polyps, by A. E. 



Verrill. 

 The collection in this department is now in excellent order, 

 and, with the exception of a large number of fossils and 

 alcoholic specimens, is on exhibition in the show cases. 

 Nearly all the recent specimens, both dry and in alcohol, have 

 now been identified, catalogued, and temporarily labelled. 

 The work of cataloguing the fossils remains, however, still to 



