62 THE NAUTILUS. 



but as their impressa is probably not sufficiently distinct irom 

 their convexa to deserve a name, I propose the use of that name 

 convexa, and do not rename it. Probably all should be referred 

 to Goniobasis, as is usually done. 



Cerithium tenerum Hall was described from the western Terti- 

 ary in 1845 (Fremont's Expl. Exped., Ore. & Cali., p. 308, 

 PI. 3, fig. 6), and was transferred to Goniobaxis by Meek in 

 1870. Meantime, Melania tenera Anthony, was published by 

 Reeve in 1861 (Monog. Melania, sp. 407), and was transferred 

 to Goniobasis by Try on in 1872 (L. & F.-W. Shells, Pt. 1, p. 

 264). This gives Hall's species priority, and Anthony's should 

 be renamed unless it has already been renamed or is considered 

 a synonym of something else. A revision of the group includ- 

 ing G. tenera Anth., based upon adequate material, is desirable. 



Melania multistriata Meek and Hayden, now known as Campe- 

 loma multistriata, was described in 1856 from the Fort Union 

 Tertiary (Proc. Acad. Nat. Sci., Phila., VIII, 1856, p. 124). 

 Wheatley used the same name in 1845, attributing it to Lea 

 (Cat. of Shells of U. S., p. 147). His catalogue was a list, 

 without descriptions, and I do not find that Lea or anyone else 

 ever used that specific name in either Melania or Campeloma. 

 Hence Meek and Hayden' s name should stand. Dr. Pilsbry 

 writes that he finds no specimens bearing such a name in 

 Wheatley 's collection in the Academy of Natural Sciences at 

 Philadelphia. Dr. Bryant Walker, in a letter just received, 

 says: "Neither Wheatley nor Lea ever described a species as 

 Melania multistriata. The use of that name by both of them 

 seems to be owing to a lapsus calami of Lea, who in his remarks 

 on his M. buddii compared it with ' the striate variety of Mr. 

 Say's virginica, which he called midtistriata.' Say's species 

 was M. multilineata, and Tryon makes the correction on p. 295 

 of his monograph." 



Paludina imdtilineata Meek and Hayden, Fort Union Tertiary, 

 Fort Clarke, North Dakota, was described in 1856 (Proc.- Acad. 

 Nat. Sci., Phila., VIII, p. 120), and renamed by the same 

 authors Viviparus nebrascensis (Proc. Acad. Nat. Sci., Phila., 

 XII, 1860, p. 430), because they said multilineata was preoccu- 

 pied in Paludina by Say, 1829. Later, after the Meek and 



