Dec 1847.] 335 



Phillips, being " Descriptions of a new freshwater shell, and observations on 

 Glandina obtusa, Pfeif ;" five by Joseph Leidy, M. D., viz ;, " Remarks 

 upon the Anatomy of the Abdominal Viscera of the Sloth, Bradypus tridac- 

 tylus, Linn. ;" " On the Anatomy of Spectrum femoratum, Say," " De- 

 scription of a new genus and species of Entozoa," " On the mechanism 

 which closes the wings of the genus Locusta," and " On the situation of the 

 olfactory sense in the terrestrial tribe of the Gasteropodous Mollusca ;" 

 two by Prof. S. S. Haldeman, viz., " Description ^f Unio Abacoides, a new 

 species,'' and " On several new genera and species of Insects ;" one by 

 Richard Owen, F. R. S., &c, being " Observations on certain Fossils from 

 the Academy of Natural Sciences, of Philadelphia; and one by Mr. John 

 Cassin, viz., "Note on an instinct probably possessed by the Herons, 

 (Ardea, Linn.)" 



The following amendments to the By-Laws have been made during the 

 same year, (1846) viz : 



Chap. V. Art. VI. to commence thus : " The duty of the Librarian shall 

 be to attend daily at the Hall, from 11 o'clock, A. M. to 2\ P. M., &c. ;"' 

 and to add to the same chapter, 



" Art. VIII. The chairman of the Curators shall attend daily at the Hall, 

 from 1\ o'clock, P. M., until sunset, to perform the duties of his office." 



From the commencement of the present year (1847) to the present time, 

 there have been elected thirteen Correspondents and nineteen Members. 



In the first five numbers of this year's " Proceedings" have been published 

 thirteen valuable original written communications, as follows : one by Prof. 

 S. S. Haldeman, being " Descriptions of several new species and one new 

 genus of Insects ;" one by Mr. M. Tuomey, State Geologist of South Caro- 

 lina, being a " Notice of the discovery of a cranium of the Zeuglodon ;" 

 one by Mr. John Cassin, being a " Description of a new rapacious bird in 

 the Museum of the Academy of Natural Sciences, of Philadelphia ;" three 

 by Joseph Leidy, M. D., viz., "Description and Anatomy of a new and 

 curious subgenus of Planaria," " Description of new species of Planaria," 

 " On the fossil Horse of America ;" one by Lieut. Abert, U. S. A., 

 being a " Description of Ortyx Squamata ;" one by Major George A. 

 M'Call, being a " Description of a supposed new species of Columba 

 inhabiting Mexico, with some account of the habits of the Geococcyx 

 viaticus, Wagler ;" one by Robert W. Gibbes, M. D., of Columbia, S. C, 

 being a " Description of a new species of Squalides from the Tertiary Beds 

 of South Carolina ;" one by Dr. J. W. Dawson, of Pictou, Nova Scotia. 

 "On the Gypsum of Nova Scotia;" one by Edward Hallowell, M. D., being 

 a " Description of a new species of Coluber inhabiting the United States ;" 

 one by Mr. T. A. Conrad, being " Observations on the Eocene Formations 

 and descriptions of one hundred and five new fossils of that period, from the 

 vicinity of Vicksburg, Mississippi, with an appendix." In addition to these 

 communications, there are several papers in progress of publication for 

 the November and December number of this year. A number of very 



44 



