[405] THE ALG^E 169 



Cosmarium pseudogranatum Nordst. (Plate XLIII, fig. 21.) 

 In a freshwater pond, Popof Island. 

 Diameter 35 /z, length 51 /z. 



Cosmarium botrytis Menegh. (Plate XLIII, fig. n.) 

 In freshwater, Popof Island. 

 Diameter 35-43 p-, length 40-52/01. 



Cosmarium conspersum Ralfs. (Plate XLIII, fig. i.) 

 In a freshwater pond, Cook Inlet (424). 



Cosmarium caelatum Ralfs. (Plate XLIII, fig. 2.) 



In a freshwater pond, Glacier Bay ; only one specimen seen. 

 Diameter 40-45 //. 



Cosmarium portianum nephroideum Wittr. (Plate XLIII, figs. 12, 



'SO 

 Freshwater pond, Seldovia, Cook Inlet. 



Diameter 21 //, length 32 /.t; isthmus 9 fj. broad; sinus 5 [i wide. 

 The verrucas are short, absent from the sinus. 



Cosmarium ochtodes Nordst. (Plate XLIII, fig. 10.) 

 In a freshwater pond near Seldovia, Cook Inlet. 

 Diameter 64 /*, length 97 p.. 



Cosmarium intermedium Delp. (Plate XLIV, fig. i.) 



In a freshwater pond near Seldovia, Cook Inlet. 



Diameter 74 p, length 66 /*, isthmus 1 2 fj. wide. The plant is cov- 

 ered all over with large pearly granules. 



Cosmarium subcrenatum Hantzsch. (Plate XLIII, fig. 20.) 

 In freshwater ponds, Glacier Bay ; Kukak Bay. 

 Diameter 26-30 //, length 35-40 ;j.. 



Cosmarium phaseolus Br6b. (Plate XLIV, fig. 8.) 

 In freshwater near Seldovia, Cook Inlet. 

 Diameter 24 /*, length 27 n ; sinus 3 /* broad; isthmus 4 fi broad. 



Cosmarium costatum Nordst. 



In freshwater near Virgin Bay, Prince William Sound. 

 Diameter 40 /*. 



Cosmarium pulcherrimum Nordst. (Plate XLIII, figs. 18, 19.) 

 In freshwater near Kukak Bay. 

 Diameter 38 //, length 52 ft. 



Cosmarium quadrifarium Lund. (Plate XLIII, fig. 22.) 

 In freshwater near Virgin Bay, Prince William Sound. 

 Diameter 33 /*, length 40 p. 



