350 PROCEEDINGS OF THE ACADEMY OF [Apr., 



Ericymba buccata Cope. 



Yellow Creek, Indiana County. 



RMnichthys atronasus (Mitchill). 



Media and Robertson's Brook, Delaware County; White's Island, 

 Bucks County; Lime Kiln Run, Hellertown and Saucon Creek, 

 Northampton County; Pocono Creek, Tunkhanna Creek, Toby- 

 hanna Creek, Pocono Lake, Snyderville, Monroe County. 



Sowego Creek, York County; Laurel Run, Huntingdon County. 



North Branch of Altman Creek, Lucus Pond, Brick Pond, and 

 Brush Creek, Indiana County. Many from the last locality are 

 greatly infested with protozoan parasites. 



Hybopsis kentuckiensis (Rafinesque). 



Sowego Creek and Susquehanna River at Peach Bottom. Muddy 

 Creek, York County. 



Exoglossum maxillingua (Le Sueur). 



Muddy Creek and Sowego Creek, York County. . 

 Cyprinus carpio Linnsus. 



TuUytown; Erie; Lucus Pond, Indiana County. 

 Carpiodes thompsoni Agaasiz. 



Erie. 



Catostomus commersonnii LacepMe. 



Robertson's Brook, Delaware County; Tullytown Creek, Fall- 

 sington, Bucks County; Linie Kiln Run, Saucon and Monocacy 

 Creeks, Northampton County; Peach Bottom, York County; 

 North Branch of Altman Creek, Lucus Pond, and Brush Creek, 

 Indiana County. 



About a dozen examples were received from Erie, some of which 

 are nearly two feet long. One of these was immediately noticed 

 to be pale or whitish, besides being silvery tinted. When opened 

 it contained a large cestode measuring 530 mm. in length. The 

 parasite was submitted to Dr. J. P. Moore, who kindly informs me 

 that it is the larval stage of Dibothrium ligula Donnadieu. He says 

 it also occurs, in the larval form, in many birds, and in the mature 

 stage, in fish-eating birds. The parasite was wound in several 

 coils loosely through the liver and about the al)dominal cavity. 

 No distension of the abdomen, such as being swolkni out, was noticed. 

 No parasites were found in the other fishes. 

 Catostomus nigricans T>c Smur. 



Peach Bottom, York County, North Branch of Altman Creek, 

 Indiana County. 



