60 
IOWA ACADEMY OF SCIENCE 
South Gar Lake. 1904. Buchanan. 
North Gar Lake, on weeds in shallow water, 1904. Buchanan. 
Allamakee County. 1905. L. H. Pammel. 
Family II. 
Camptotrichaceae. 
No species or genera belonging to this family have as yet been described 
from the state. 
Subclass. 
Glaucocystideae. 
None of the representatives of this more highly differentiated group of the 
Myxophyceae have been reported from Iowa. Perhaps Glaucocystis may be 
found in the northern part of the state. 
Class II. 
BACILLARIEAE (DIATOMS). 
Although a large number of Diatoms have been collected when 
collecting other forms of algae, no attempt has been made to classify 
them with the exception of one or two cases. The diatoms have an 
almost universal distribution over the state. Some work on their 
distribution in this state has been done by other authors, but a 
most interesting field is here for anyone who has the time and 
ability to take it up. Species belonging to the following genera 
have been noted, with only occasional specific identification: 
Centricae. 
Discoideae. 
Melosiraceae. 
46. Melosira. M. granulata. Lake Okoboji and Gar Lake. 
Coscinodiscaceae. 
47. Stephanodiscus. S. niagarae Ehr. Gar Lake, surface. 
Pennatae. 
Fragilarioideae. 
Tabellariaceae. 
48. Tabellaria. T. fenestrata. (Lyngb) Kutz. Gar Lake. 
Meridionaceae. 
Meridion. 
Diatomaceae. 
49. Diatoma. D. vulgare Bory. Pond, Eagle Grove Buchanan. 
Fragilariaceae. 
Fragilaria. 
Synedra. 
Eunotiaceae. 
Eunotia. 
