38 Clarence J. Elmore 



2. Lysigonium distans (Kiitz.) Kuntze. Rev. Gen. Plant., If, 



p. go 2. i8pi. 



Meloseira distans Kiitz. Bacill., p. 54, pi. 2, fig. 12. 1844. 



PI. I, figs. 6-10. 



End of cell flat, 4-20 fi in diameter, covered with large scattered 

 dots; sides of cell covered with granular striations, 13-14 in 10 /w, 

 slightly spiral; ends of cell with a row of marginal spines. End 

 view shown in fig. 10. 



Among moss with Spirogyra at Snake River Falls, Culbertson ; with 

 other algae at Oakdale, Scottsblufif, Valentine. 



Fossil : Agate. 



Stockton, Cal. 



3. Lysigonium crenulatum (Kiitz.) Kuntze. Rev. Gen. Plant., 



II, p. po2. i8pi. 



Meloseira crcnidata Kiitz. Bacill., p. 55, pi. 2, fig. 8. 1844. 



Gallionella crcnulata Ehr. Verb., pi. 2, fig. 41. 1843. 



PI. I, figs. 11-13. 



End of cell plane, finely punctate, puncta scattered ; margins 

 showing well-marked teeth ; cells much longer than broad, showing 

 near the end of the cell a faint sulcus ; sides of the cell striate, with 

 striations usually somewhat oblique, about 18 in jo /jl, consisting of 

 somewhat elongated puncta. Diameter, 2.5-20 /x; length of cell, 



12-17 )U,. 



Crawford, Oakdale, St. Paul, Snake River, Thedford, Wann. 



Fossil : Loup City. 



Belvidere, Blackpipe, S. Dak. ; Stockton, Cal. 



4. Lysigonium granulatum (Ehr.) Kuntze. Rev. Gen. Plant., II, 



p. p02. i8pi. 



Gallionella granulata Ehr. Verb., p. I2y. 18 4^. 



Meloseira granulata R3.\is in Pritch. Inf., p. 820. 1861. 



PI. I, figs. 14-15. 



End of cell plane with large granules, scattered, indistinct ; mar- 

 gin much indented ; cells without sulcus, elongated, the sides with 

 very coarse, distinct granules arranged in longitudinal lines, 7-9 in 

 10 fx. Diameter, 5-17.5 ju. 



In ponds, lakes, creeks, etc. Atkinson, Brownlee, Chadron, Dewey 

 Lake, Gordon Creek, Grand Island, Hackberry Lake, Halsey, Pelican 



