Smith—Algae Found in Wisconsin Lakes . 
553 
Plankton; Lake Mendota. Along shore; Cedar, Helen 
(Winchester), Minocqua, Muskallonge and Waubesa Lakes. 
Scenedesmus dimorphus (TURPIN) KUTZING, in 
Linnaea, 8 (1833) p. 608. Achnanthes dimorphus Turpin, in 
Mem. du Mus. d’Hist. Nat. Paris, 16 (1828) p. 313, t. 13, 
fig. 12. 
Along shore; Devil’s, Found, Mendota and Waubesa 
Lakes. 
Scenedesmus arcuatus LEMMERMANN, in Fors- 
chungsbr. a. d. Biol. Stat. zu Plon, 7 (1899) p. 112, t. 1, 
figs. 2-4. 
Plankton; Cranberry, Long, Mendota, Meta, Pardee and 
North Turtle Lakes. 
var. platydisca SMITH, in Trans. Wis. Acad. ined. 
Plankton; George Lake. Along shore; Kegonsa and Rozen 
Lakes. 
Scenedesmus bijiiga (TURPIN) LAGERHEIM, in 
Nuova Notarisia, 4 (1893) p. 158. Achnanthes bijuga , Tur¬ 
pin, in Mem. du Mus. d’Hist. Nat. Paris, 16 (1828) p. 310, 
t. 13, fig. 4. 
Plankton; Fowler Lake. Along shore. Clear, Helen (Win¬ 
chester), Muskallonge, Mud (Waupaca Co.), Old Taylor’s 
and Razorback Lakes. 
var. alternans (REINSCH) BORGE, in Arkiv for Bo- 
tanik, 6 (1906) No. 1, p. 57. Scenedesmus alternans Reinsch, 
in Abh. Senckenbergischen Naturf. Ges. 6 (1866) p. 135, 
t. 20, fig. D5. 
Plankton; Muskallonge Lake. Alongshore; Devil’s Lake. 
Scenedesmus denticulatus LAGERHEIM, in Ofvers. 
Kgl. Vet.-Ak. Forh. 39, No. 2 (1882) p. 61, t. 2, figs. 13-17. 
Plankton; Lake Mendota. Along shore; Clear Lake. 
Scenedesmus brasiliensis BOHLIN, in Bih. t. Kgl. Sv. 
Vet.-Ak. Handl. 23, Afd. 3, No. 7 (1897) p. 22, t. 1, figs. 
36-37. 
Plankton; Old Taylor’s Lake. Along shore; Carroll, 
Devil’s, Minocqua, Rozen and Waubesa Lakes. 
Scenedesmus acutiformis SCHRODER, in Fors- 
chungsbr. a. d. Biol. Stat. zu Plon, 5 (1897) p. 45, t. 2, fig. 4. 
Plankton; Lake Mendota. Along shore; Found Lake. 
Scenedesmus serratus (CORDA) BOHLIN, in Bih. t. 
Kgl. Sv. Vet.-Ak. Handl. 27, Afd. 3 No. 4 (1902), p. 44, t. 1, 
