[405] THE ALG^E 169 



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

 In a freshwater pond, Popof Island. 

 Diameter 35 /i, length 51 ,u. 



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

 In freshwater, Popof Island. 

 Diameter 35-43 /-*, length 40-52 /*. 



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 ;j.. 



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



'SO 

 Freshwater pond, Seldovia, Cook Inlet. 



Diameter 21 ,u, length 32 //. ; isthmus 9 /j. broad; sinus 5 !* 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 /*. 



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



In a freshwater pond near Seldovia, Cook Inlet. 



Diameter 74 ,, length 66 /./, isthmus 12 /a 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 //. 



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

 In freshwater near Seldovia, Cook Inlet. 

 Diameter 24 /*, length 27 /j. ; sinus 3 p. broad; isthmus 4 /./. broad. 



Cosmarium costatum Nordst. 



In freshwater near Virgin Bay, Prince William Sound. 

 Diameter 40 [j.. 



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

 In freshwater near Kukak Bay. 

 Diameter 38 /./., length 52 p. 



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

 In freshwater near Virgin Bay, Prince William Sound. 

 Diameter 33 /a, length 40 ;i. 



