354 Notes on Marine Algce. By Edward A. L. Batters. 



Parasitical on Corallina oficinalis, wHch it sometimes almost 

 entirely covers, oftener however it is found in small quantity on 

 the fronds of the '' host plant. " 



[In article I. "Berw. Nat. CI. Proceedings," 1883, p. 113, line 

 11 from bottom for " pond " read '' frond ;" p. 114. line 5 from 

 bottom for " Areschong's " read " Areschoug's."] 



EXPLANATION OF PLATES. 



Plate VIII. 



Fig. 1. Phloeospora tortilis. Natural size. 



Fig, 2. Transverse section of a young branch, 500 diam. 



Fig. 3. „ an old „ 500 diam. 



Plate IX. 



Fig. 1. Nitophyllum reptans growing on Laminaria digitata. 

 Natural size. 



Fig. 2. The same detached from the Laminaria stem so as to 

 show shape of frond. Natural size. 



Fig. 3. Surface of frond, 240 diam. 



Fig. 4. Vertical section of frond, 500 diam. 



Fig. 5. Machista Grevillii -growing on Cladophora rupestris. 

 Natural size. 



Fig 6. Section of same showing unilocular sporangia, &c., 

 500 diam. 



Plate X. 



Fig. 1. Thamnidion intermedium growing on Ahnfeldtia. plicafa. 

 Natural size. 



Fig. 2. Branch and spores, 125 diam. 



Fig. 3. Group of tetraspores, 500 diam. 



Fig. 4. Sphacelaria caspifula growing on Laminaria digitata. 

 Natural size. 



Fig. 5. Portion of same. 125 diam. 



Fig. 6. Joints of same. 500 diam. 



Fig. 7. Phyllitis Fascia. Natural size. 



Fig. 8. Section of same. 125 diam. 



Plate XI. 



Fig. 1. Melolesia corallines. Natural size. 

 Figs. 2. and 3. same. Different forms. 75 diam. 

 Fig. 4. Surface of frond. 125 diam. 

 Fig. 5. Spores. 500 diam. 



