IN THE ALLEGHENY REGION OF SOUTH-WESTERN VIRGINIA. 247 



James. Micropterus* AmhlopUtes and Pomoxi/s cease. 



Potomac. Percopsis, according to Prof. Baird (verb, com.), ceases here. 



Susquehanna. Geratichthys, ExogJossum, Ghrosomus and Carpiodes cease. 



Delaware. CUnostomus, Hypsilepis analostanus, Enneacanflius and Lepidosteus cease. 



Hudson. Semotilus corporalis, according to F. W. Putnam (verb, comm.), ceases. 



The Atlantic types remaining in the New England district (IV) are first, then, 

 Salmo, Esox, Angidlla, Perca ; and, secondly, the general types SemotUm, Hypsilepis, 

 Stilhe, Hyhopsis (hifrenatii-s), Fundulus, Amiurus, and by the Lake types Lota and 

 • Coregonns. 



* It appears from statements made to me by J. Delaplaiiie, of Wheeling, and Prof. J. B. Davis, of Roanoke 

 College, Va., that the Mioropterus fasciatus was introduced from sixteen to twenty years ago into the head 

 waters of the Potomac, from the Ohio, and that they have greatly increased since that time. They are now 

 said to be very abundant in the Shenandoah. By subsequent reference to the Smithsonian Report for 1854 

 (p. 290), I find that this fact has been recorded there by John EoCf, of Wheeling, who states that this transfer, 

 which has been so successful in its results, was made by William Shriver, of the same place. 



63 



