119 



Uiiionidse. submitted by Prof. Snow. It was subsequently lost. In a later 

 consignment of shells, from Mr. Quintard, there were included a number of 

 examples of this interesting limnaeid, all but two being immature. Care- 

 ful search upon submerged sticks, leaves, stones, bark, and especially dead 

 bivalves, will no doubt bring to light abundant specimen?. This species 

 forms one of a group of univalve rnollusks concerning which at least so 

 of American forms liitle satisfactory information can be given. In Proc. 

 Phila. Acad. Nat. Sci. for 1883, pp. 214-240 and plate X, Dr. Benj. Sharp 

 has done for certain European Forms* a work which is urgently needed for 

 our own. If Kansas collectors will collect, in alcohol, some of these mol- 

 lusks, a beginning may be made. 



B. NEW LOCALITIES FOR SPECIES PREVIOUSLY REPORTED. 



LAMELLIBRANCHIATA. 



Family UNIONID^. 



Genus UNIO. 



Unio ai.-Hus. Say. Mara is des Cygnes River at Malvern ( Snow). 



Unio anodontoides, Lea. Verdigris River at Coffeyville (Snow); 

 small stream at Wellington (Snow); Marais des Cygnes River, Chippewa 

 Hills, Indian Reservation (Snow); Elk River at Howard (Snow); White- 

 water River (Mead); Cowskin Creek ( Mead) ; , Lirtle Arkansas River 

 near Wichita (Mead); Soldier Creek, Shawnee Co. (Quintard). 



From these data it will be seen that this form is probably of general dis- 

 tribution throughout the State. It is one of the most widely distributed 

 forms of the eastern United States, ranging from New York to Georgia, 

 to Texas, to Michigan. It is also the least variable of the Utu'ones. 



Unio camptofloii, Say. Lake Thayer, and Mumm's Creek, Thayer 

 (Snow); in a tributary to Soldier Creek, Shawnee Co. (Quintard); Cow- 

 skin Creek ( Mead ), and Turkey Creek, Barber Co. (Cragin). 



The examples of this form which have been seen are not numerous, but 

 the species is probably quite generally distributed in the eastern and south- 

 ern portions of the State. It is known from Ohio under the name of U. 

 xayii. Ward, and from trie southern States as U. declivis, Say, and U. man- 

 nbius, Gould. It is remarkably constant in its characteristics when its 

 wide distribution is considered. 



Unio coccineiis, Hildreth. Verdigris River at Coffeyville, and Spring 

 River at Baxter Springs (Saow). 



This form has proven to be of somewhat rare occurrence within the 

 limits of Kansas. It is generally abundantly distributed throughout the 

 Mississippi Valley. 



Unio coriiutus, Barnes. Mill Creek, Wabaunsee Co. (Quintard). 



Unio cyiindricus. Say. Neosho River ( Dr. Newlon) ; Spring River, 

 Baxter Springs ( Snow). 



One entire shell and two odd valves are all that have been hitherto sub- 

 mitted by the Survey. It ought to be found, not uncommonly, on gravel 



*Ancylus fluviatilis, Muell., and Ancylus lacustris, Geof. 



