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Messrs. SHarpz and Dresser read a paper some new or little- 
known points in the economy of the Common Swallow (Hirundo 
rustica), The authors drew special attention to the changes of 
plumage through which this species passed during its residence in 
Southern Africa. 
Mr. G.B. SowERBy communicated descriptions of 48 new species 
of Shells from various localities. 
The next Meeting of the Society will be held at the Society’s 
House in Hanover Square, on Thursday, the 12th of May, 
1870, at half-past Eight o’clock, p.m., when the following commu- 
nications will be made :— 
1.—Dr. CunnincHam.—Notes on some points in the anatomy of certain 
Kingfishers, 
2.—Mr Grorce GuLLIvVER.—On the taxonomic characters afforded by the 
muscular sheath of the esophagus in Sauropsida and other Verte- 
brates. 
3.—Mr, Arrrep SaNDERS.—Notes on the myology of Platydactylus. 
Japonicus. 
4.—Mr. R. B. Suarre.—On the Hirundinide of the Ethiopian region. 
