100 Cincinnati Society of Natural History. 



one of the most distinctl}^ defined species of Planorhis yet found 

 in this country, and certainly one of the most beautiful. The form 

 of the aperture and the characters of the shell in P. glahratus 

 and P. Duryi, warrant the statement that the}"^ do not belong to 

 an}' group of the Planorbinae yet established, though we leave them, 

 for the present, in Helisoma. 



OBSERVATIONS ON BIRDS. 

 By Charles Dury and L. R. Freeman. 



In the following paper are given a number of heretofore unpublished 

 dates of occurrence of birds in the vicinity of Cincinnati, with notes on 

 some of the species : the captures in this locality of Tringa bairdii^ 

 Sterna hirundo and Helminthophaga clirysoptera are for the first 

 time recorded. Most of these observations were made in the neigh- 

 borhood of Avondale, and at Locust Corner, near the Ohio River, about 

 eleven miles above the cSXy. The aquatic birds were taken, with few 

 exceptions, at the mouth of the Little Miami River, where the}' frequent 

 the bars exposed at low water. 



November 22, 1879. 



Tdrdus mustelinus, Gm. Wood Thrush. — October 7, 1877. 



Turdus fuscesoens, Steph. Wilson's Thrush. — September 1. 1879, 

 several specimens, 



Turdus alici^, Bd. Gray-cheeked Thrush. — September 16, 1879. 



Turdus swainsoni. Cab. Swainsons Thrush. — May 18, 1879; 

 September 2 and 21, 1879. 



Turdus pallasi, Cab. Hermit Thrush. — October 20, 1878. 



Regulus calendula, Licht. Ruby-crowned Kinglet. — May 0, 1879. 



Polioptila c^rulea, Scl. Blue-gray Gnatcatcher. — September J, 

 1879. 



LopHOPHANES BicoLOR, Bp. Tuftcd Titmouse. — Noticed on Ma}' 25, 

 1878, that a tufted titmouse had selected as its breeding-place the dis- 

 carded nest of some large bird, in the top of a tall, slim sapling. The 

 little eccentric had deposited six eggs (nearly' hatched when found) 

 on a layer of dry grass, which nicely lined quite a large hole which she 

 had excavated in the side of the rough structure. 



SiTTA CANADENSIS, Liuu. Red-bellied Nuthatch. — September 15, 

 1878 ; April 27, 1879. 



Certhia pamiliaris AMERICANA, Bp. Browi) Creeper. — September 

 23, 1878 ; April 12, 1879. 



