123 



River at Malvern (Snow) ; Smoky Hill River at Wallace (Col. N. S. Goss) ; 

 Ellis (Watson); Turkey Creek, Barber Co. (Cragin). 



This shell originally came from a point near Topeka. See the preceding 

 species. 



Aiiodonta K-raiidis. Say. Verdigris River at Coffeyville and creek at 

 Moline (Snow) ; Cowskin Creek and Little Arkansas River near Wichita 

 (Mead). 



A full discussion of this extensively distributed form, the type of a large 

 group of ponderous Anodontse, is reserved for a separate paper. It can 

 now be stated that very many so-called species must fall under grandis as 

 synonyms. It ranges from Lake of the Woods to Texas, and east to New 

 l^ork. Anodonta plana. Lea, is plainly a highly colored or ornamented 

 variety. 



Anodonta ovata. Lea. Lake Thayer at Thayer (Snow). 



These specimens settle plainly the identity of this variety, and permit 

 its appearance in this Contribution without the mark of doubt that has ac- 

 companied it heretofore. 



Anodonta plana, Lea. Cedar Creek, Mt. Ida. and Elk River at How- 

 ard (Snow) ; in tributary to Soldier Creek, Shawnee Co. (Quintard). 



See preceding note under Ano. grandis. 



Anodonta suborbiculata, Say. Silver Lake, Shawnee Co. (Quintard). 



Mr. Quintard has supplemented the single valve submitted by Col. Goss, 

 from Neosho River, by a single specimen from the above locality. The 

 form is everywhere considered a rare one, and does not generally appear in 

 collections. It is, however, abundant near Muscatine, luwa, and at Spring- 

 field, Illinois. 



CORBICULIDJE. 



Genus SPH^RIUM. 



spiia i iinii striat {num. Lamarck. Brook in Silver Lake township, 

 Shawnee Co. (Quintard) ; Neosho River (Newlon) ; Little Arkansas River 

 near Wichita (Mead); Wabaunsee Co. (Miss Lillian A. Baldwin); and 

 the following localities certified by material contributed by Prof. Snow : 

 Mumm's Creek, Thayer; Cedar Creek. Mt. Ida; Elk Creek, Thayer; Ver- 

 digris River at CoiFeyville. 



GASTEROPODA. 



LIMN^EID^E. 

 Genus HELISOMA. 



ii <i iso ma Mcarinata, Say. Cedar Creek, Mt. Ida (Snow) ; Barber Co. 

 (Cragin); McDowell Creek, Riley Co. (Cragin); drift-wood on shore of 

 Kansas River (Quintard). 



From the amount of material submitted, this does not appear to be a 

 very common form. It will doubtless be found in all portions of the State. 



Helisoma trivolvis. Say. Silver Lake, Shawnee Co. (Quintard) ; Sedg- 

 wick Co. near Wichita (Mead) ; Cedar Creek, Mt. Ida (Snow). 



