150 SPECIES OF UNCERTAIN PRESENCE 



Illinois literature undoubtedly resulted from a case of mistaken 

 identity. 



Gastrodonta intertexta (Binney). Page 121. 



This species is reported from White County by Hinkley 

 and from Vermilion County by Marsh. Curiously enough, all 

 specimens labeled under this name have been found upon exami- 

 nation by the author of this fieldbook to belong to J'entridens 

 ligerus. Ventridens intertextus, as Gastrodonta intertexta is now 

 named, may possibly be found in Illinois, since it is common in 

 Indiana. 



Gastrodonta gularis (Say). Page 121. 



Calkins recorded this species, now named Ventridens gularis, 

 from northern Illinois. This record is very doubtful, and 

 authentic material must be found before the species can be 

 admitted to the Illinois fauna. This is a southern species, the 

 only authenticated record north of the Ohio River being from 

 near New Albany, Floyd County, Indiana. 



Gastrodonta interna (Say). Page 121. 



This species is recorded from Macoupin County by Marsli. 

 The record is probably a case of mistaken identity. Gastrodonta 

 interna occurs in southeastern Indiana, and its presence in Illi- 

 nois is very doubtful. 



