Supplementury List. 47 
45. Nawicula rhomboides Erb. In material collected at Minden by Dr. 
Hapeman, (C.) 
46. Pleurosigma spenceri (Quek.) W. Sm, Lincoln, (C.) 
47, Gomphonema dichotomum Kuetz. Minden, (H.) 
48 Gomphonema geminatum S, & F. Minden, (H.) 
49. Cocconets striata Ehrb. In material collected at Minden by Dr. Hape- 
man, (C,) 
50. Lpithemia argus Kuetz. Minden, (H) This species was doubtfully 
recorded in the catalogue (No. 100) as from Lincoln. 
51. Lpithemia sorex Kuetz. Pauline, (H ) 
52. L£pithemia zebra (Ehr.) Kuetz. Minden, (H.) 
53. Syedra affinis Kuetz. Minden, in material coll. by Dr. Hapeman, (C.) 
54  Synedra ulna (Nitzsch) Ebr. var. /ongissima (W. Sm.) Brun. In ma- 
terial collected at Minden by Dr. Hapeman, (C). 
55. fragilaria virescens Ralfs. Minden, in material collected by Dr. 
Hapeman, (C) 
56. Nitsschia communis Rabh. In the basin of the artesian well. Lin- 
coln, Dec. 1891, (S ) 
57. Wilsschia thermalis (Ehr.) Auersw. In salt water. Lincoln, (C.) 
58. Nelsschia vermicularis (Kg.) Hantz. Minden, (H.) 
59: Nilsschia vitvea Norm. Minden, (H.) 
60. A\Vésschia vivax W.Sm. Minden, (H.) * 
ZYGNEMACE.E 
61, Alougeotta senufiexa (Dillw.) Ag. Lincoln, (C.) 
62. Zygnema pectinatum (Vauch.) Ag., var, axomalum (Hass.) Kirch, Min- 
den, Coll. by Dr. Hapeman, (W.).. 
63. Spirogyra crassa Kuetz. South Bend, (C.) Filaments 136 mmm. in 
diameter. 
OEDOGONIACES. 
64. Ocdogonium pringsheimii Cram Minden, Coll. Hapeman, (W.) 
65. Ocdogonium welleanum Wittr. Minden, Coll. Hapeman, (C.) 
CoLEOCHETACE#. 
66. Coleochwte scutata Breb. In material from Minden, collected by Dr. 
Hapeman, (C.) 
SPHERIACEA. 
67. \i daria polymorpha (Pers.) Grev., var. spathulata Pers. Lincoln, (C.) 
68. Ardaria polymorpha (Pers.) Grev., var. acrodactyla Nits. Lincoln, (C.) 
69. “vpoxvlon epiphloeum B. & C. Lincoln, (W.) 
DorTHaIDIACEz. 
70. Dothidia ribesia Pers. Lincoln. On stems of Ribes gracile Michx. (W.) 
PEZIZACE#. ; 
qi. Lachnea scutellata Linn. On earth in greenhouse. Lincoln, (C.) 
72 Sclerotinia durewana Tul. On ground in woods. Lincoln, Apr. 
1892, (C.) 
73. Sclerotinia trifoliorum Eriks. Raymond, (C.) 
74. Sclerotinia gracilis Clements, u.sp. Cup thin, hemispherical, bright 
\ brown, margin entire, darker: stipe elongated, flexuous, thick, 1.5— 
