ERRATA. 



p. MODESTtTM, Lea, p. 130. This species must bear the name of its synonyme 

 P. KxoxENSK, Lea, because lo modesta. Lea, previously described, is also a 

 Plvurocera. 



P. TORTUM, Lea, p. 84. This species may be called P. Parkeri, nob., after Mr. 

 Charles F. Parker, a conchologist of Camden, New Jersey. P. toetum. Lea, p. 

 117, will stand as a species. 



G. INOSCULATA, Lea, p. 302, read G. 03Ctn.ATA, Lea. 



G. NIGUINA. Lea, p. 280, is made a syiioDynie of G. DRAYTOsn. but should be 

 cancelled. This species I now consider distinct and I have so treated it, vide 

 p.'2U. 



Pal. nttmerosa, Anth., p. 421, read HtnaEROSA. 



