Smith—Algae Found in Wisconsin Lakes 
625 
a bloom of this alga is quite striking since, to the naked eye, the 
lake appears to be filled with small pieces of macerated grass. 
II. Camp (r), Center (rrr), Green (ss), Hooker (cc). 
III. Amicoy (aa), Bear (rr), Beaverdam (rr), Birch (ss), Chetae (sss), 
Chetek (a), Granite (a). Horseshoe (r), Island (ccc). Little Eice 
(sss), Pokegama (a). Prairie (aa), EeserveXrr)j Eice (ss), ShelP 
(rrr), Vermilion (r), Whitefish (rr). 
Family RIVULARIACEAE 
Genus RIVULARIA (Roth) C. A. Agardh 1824. 
Rivularia echinulata (Smith) Born, et Flah. 
Bull. Soc. Bot. France 31: 77. 1884; P. Eichter, Forschungsbr. a. d. biol. 
Stat. zu Plon 2: 31. figs.1-8. 1894. 
III. Bear (rr), Beaverdam (rr), Birch (ss), Chetae (ss). Duck (rr). 
Dummy (rr). Grindstone (rr). Horseshoe (ss). Island (ss), Lae 
Court Oreilles (ss), Owen (rr), Eeserve (rr). Shell (rr). White- 
fish (sss). 
Class CHLOROPHYCEAE. 
Order Volvocales. 
Family VOLVOCACEAE. 
Genus GONIUM Mueller 1773. 
Gonium pectorale Mueller. 
Vermium terrestrium et fluviatilum etc. 1: 60. 1773. 
The mucus projections between the individual cells are more 
fully developed in the plankton individuals of this species. 
(Plate 10, figs. 1-2). 
III. Beaverdam (rrr), Duck (rr). Island (r). Number One (rr). 
Genus PANDORINA Bory de St. Vincent 1824. 
Pandorina morum Bory de St. Vincent. 
Encyc. meth. Hist. Nat. de Zoophytes 2: 600. 1824; G. !3. West, Brit. 
Freshw. Algae 193. jigs. 76a-76h. 1904. 
II. Camp (rr). Center (cc). Hooker (s). 
III. Birch (rr), Chetae (rr), Chetek (sss). Duck (ss). Grindstone (s). Lac 
Court Oreilles (ss). Little Eice (r). Number One (rr), Pokegama 
(r), Prairie (r), Eeserve (rr), Eice (r), Whitefish (ss). 
40—S. A. L. 
