MEMOIRS OF THE CARNEGIE MUSEUM. 



The first to report an exact locality for this species in Pennsylvania was 

 Conner (1904) Still Creek, at Quakake, Schuylkill Co. This creek is not named 

 on the sheets of the U. S. Topographic Atlas, but it is, as I have ascertained, a 

 tributary of the uppermost Little Schuylkill, and the place Quakake is no doubt 

 the same as Quakake Junction, not far from Tamaqua. In the same general 

 region, near Tamaqua, this species once used to be abundant in the headwaters 

 of the Little Schuylkill, and its metropolis was in Locust Creek (See fig. 1) but the 



(ort l-Union 



Fig. 1. 

 Glacial Preserve of Margaritana margaritifera in Pennsj'lvania. 



recklessness of the pearl-hunters has nearly exterminated it. At the present time 

 living specimens are rare in Locust Creek. The natives also report that it used 

 to be found in Pine and Hosensock Creeks. 



This species also occurs to the South of Tamaqua, in tributaries of the Little 

 Schujdkill, in Cold Run, above Hecla, and in Indian Run, at Rene Mont. The 

 latter localit}^ marks the southernmost extension of the range of the species. Other 

 creeks in this region also may have formerly contained this shell, but, as for instance 

 in the case of Panther Creek, it must have been destroyed long ago by the pollution 

 from the coal-mines. 



The headwaters of the Little Schuylkill in Schuylkill County appear to be 

 the only region in Pennsylvania where this species is found. It has never been 

 reported from any other part of the state (except the spurious records mentioned 

 above), and the efforts of myself, of Conner, and of Pilsbry to locate it elsewhere 

 have only proved its absence. The writer devoted much time to hunting for it, 

 or to securing information about its presence, in northern Schuylkill County, in 



