1864.] NATURAL HISTORY SOCIETY. 235 



From Mr. W. Hunter. — The yellow-bellied Woodpecker iCen- 

 twus Jlaviventris, Swainson) ; the golden-winged "Wor dpecker 

 (Cohiptes auratus, Linn.) ; 2 Robins (Tardus migratorins, 

 Linn.); 1 blue yellow-backed Warbler [Panda Ajnericana, 

 Bonaparte). 



To THE Library. 



Preliminary List of the Plants of Buffalo. — From the Buffalo 

 Society of Natur il Sciences. 



Arboretum et Fruticetum Britannicum, by J. C. Loudon ; 8 

 vols. Svo., illustrated.- From James Ferrier, jun., P]sq. 



Bombay Magnetical and Meteorological Observations, 1862. 



New Members. 



John Tempest, and Alexander S. Ritchie, Esqs., were elected 

 ordinary members of the Society. 



Proceedings. 



The Recording Secretary then read a communication by Dr. 

 Bowerbank, on two new N. American Sponges. The fir,>t of these 

 was a small marine form ;of the genus Tethea), dredged by Dr. 

 Dawson off the coast of Portland, Maine. The second was a 

 green fresh-water species (of the genus S2yo7iglUa), occurring in 

 quiet little bays along the St. Lawrence about Montreal, also in 

 Upper Canada, in which places it has been taken by Dr. Dawson, 

 Rev. A. F. Kemp, Mr. R. J. Fowler, and others. Dr. Dawson 

 remarked that a great number of the N. American sponges differed 

 somewhat from allied European forms, and were probably new 

 species. The present paper, he remarked, might be looked upon 

 as the first instalment of a somewhat elaborate memoir upon these 

 very ill-understood and low forms of animal life, to the study of 

 which Dr. Bowerbank has paid much attention. Dr. Dawson 

 then gave an account of several species of Annelida and Bryozoa, 

 from Mingan and Metis. The Mingan specimens were collected 

 by Mr. Richardson, jun., of the Geol. Survey, and the Metis forms 

 by Mrs. H.Parkinson. The doctor commenced by making draw- 

 ings explanatory of the structure of the animal of the genus 

 Spirorbis. He explained that these creatures were marine worm- 

 like animals, which constructed small, flattened spiral shells, which 

 were generally attached to sea-weeds, stones, or shells. He then ex- 



