On the Pithophorace^e. 



71 



INDEX OF SPECIES AND SYNONYMS. 







Page 



66. 





Conferva 





55. 





66. 



» 





55. 



» 





66. 







48. 







64. 





50. 







58. 



» 





52. 







55. 







62. 







66. 







48. 



» 





64. 



ABBREVIATIONS. 



ay. = average. — cm. = centimeter. — fig. or figs. = figure or figures. — 

 1. = length. — (.i = 0,001 millimeter. — pag. = page or pages. — par. or parag. 

 = paragraph. — pi. = plate. — th. = thickness. 



