122 



sns. Lea. Marais des Cygnes River, and Ottawa Creek 

 at Garnett (Snow). 



Unio subrostratiis, Say. Ellis (Watson) ; Soldier Creek. Silver Lake 

 township (Quintard) : Little Arkansas River near Wichita (Mead) ; 

 Mumin's Creek, Elk Creek and Lake Thayer, Thayer, Cedar Creek at Mt. 

 Ida, creek at Moline. Marais des Cygnes River at Malvern, arid Ottawa 

 Cr^ek at Garnett (Snow). 



This name will include, also, those specimens which appear in the Sur- 

 vey's and State University's collections under the name of Ukio fopekaensis, 

 Lea. See Contributions to a Knowledge of Kansas Mollusca, No. III. It 

 will be seen from these localities that this species is probably found in all 

 parts of the State. 



I'nio tnberciiiatus, Barnes. Whitewater River at Towanda (Mead) ; 

 Verdigris River at Coffeyville (Snow). 



Unio undnlatus, Barnes. Neosho River (Newlon) ; Mission Creek, 

 Shawnee Co. (Quintard); Cowskin Creek (Mead); the following localities 

 are all certified by material in the Snow collection : Deer Creek, Lawrence ; 

 Walnut Creek, El Dorado; Cedar Creek, Mt. Ida; Marais des Cygnes 

 River at Malvern ; Elk River at Howard ; Verdigris River at Coffey ville, 

 and Spring River at Baxter Springs. 



A very common, usually abundant form, often confounded with U. pli- 

 catiis, which see. 



Genus MARGARITANA. 



Margaritana complaiiata, Barnes. Soldier Creek and Silver Lake. 

 Shawnee Co. (Quintard); Neosho River (Nev\lon); Cowskin Creek and 

 Little Arkansas River at Wichita (Mead). 



Ranges from Lake Winnepeg; to New York, to Texas, and Kansas. This 

 is the only symphynote or alate form in the genus, and is readily distin- 

 guished by this character. 



Genus ANODONTA. 



Anodonta arkaiisensis, Lea. Ottawa Creek at Garnett ; Ninnescah 

 River at Reno (Platt and O'Hara); Whitewater River at Towanda, and 

 Little Arkansas River at Wichita (Mead). 



This species is a member of the group typified by Anodonta edentul'i, 

 Lea, from which ic is certainly not specifically distinct. It, is described and 

 figured in Vol. X, 2d Series, Trans. Am. Phil. Soc., pi. IX, fig. 56. The 

 specimens contributed by Mr. Mead are from near the typical locality, 

 " the Little Arkansas, where the road to Santa Fe crosses it." 



Anodonta bealii, Lea. Little Arkansas River at Wichita, and Cowskin 

 Creek (Mead). 



The southernmost known range of this shell is central Texas, where it 

 was originally collected. It groups in that extensive natural series which 

 may be headed by Ano. grandis, Say. and is close to certain forms of Ano. 

 piano, and Ano. opaca. The succeeding form is a member of the same 

 group, and offers, in some Kansas specimens, so close resemblance to many 

 forms of Ano. beUi as to make specific identity questionable. 



Anodonta danielsii, Lea. Elk Creek, Thayer, and Marais des Cygnes 



