December, 1842.] 227 



Mactra Braziliensis ; Cytherea fulminata, two specimens; 

 Helix spherica, Sow., two specimens; H. Lamarckii, Sow, 

 two specimens: H. Iloconensis, Sow. ; Pupina nunesii ; Egg of 

 Bnlimus ovatus. 



By Mrs. Lucy W. Say: 



Alasmodonta confragosa, two very large specimens; Unio 

 suborbiculatus, Lam., (globulus, Say;) U. apiculatus, Say; U. 

 Nashvillianus, Lea ; U. obesus, Lea ; U. nasutus, variety. 



By Dr. William Walker, of Nashville, Tennessee : 

 Unio teres ; U. sulcatus ; U. oriens ; U. glans, Say ; XJ. fascio- 



laris ; U. plicatus, Say ; U. rectus, Lam. ; U. heros, Say ; U. 



olivarius, Raf. ; U. truncatus ; U. dromas, Lea; U. triqueter; 



TJ. interruptus, Raf.; U. capillaris ; U. mytiloides, Raf.; U. 



tseniatus, Con. ; U. Haysianus, Lea. ; U. metanever, Raf. ; TJ. 



alatus, Say; U. Edgarianus, Lea; U. niger; U. foliatns ; U. 



stegarius, Raf.; U. torsus, Raf.; U. nexus, Say; U. crassns, 



Say ; U. pustulosus, Raf. ; U. scalenius, Raf. ; U. dilatatus, 



Raf. ; U. lineolatus, Raf. ; Melania Troostensis, Lea. 



DONATIONS TO LIBRARY. 



Annales des Mines. Tome XX., VI. Liv. de 1841. In 



exchange. 

 Transactions of the American Philosophical Society. Vol. 



8. New Series. Part II., 1842. From the Society. 



WRITTEN COMMUNICATIONS. 



A letter was read from Mr. Henry Piddington, dated 

 Calcutta, February 21, 1842, referring to his published 

 "Note on the Fossil Jaw sent from Jubbelpore by Dr. 

 Spilsbury," (a copy of which is contained in the Library 

 of the Academy,) and requesting attention to the subject 

 of which it treats. 



