EXPLANATION To PLATE XXXI. 



Fie. 1. Diphasia pulchra Nuttiiij;. T\\ hydn>tlKv;r (greatly enlarged). 



'1. Diphaaia pulehra. Part i>f rolmiy (enlarged). 



:\. DipJiasia pulchra. Part of branch (rnlarf.'rd i. 



4. mjilnixiii. jiiiiii-iiiiniiii Nutting. Part of liranrh with mule ^'manjria (cnlarfii-il ). 



r>. iiijtiimsin imiii-iiiiiiiiii. Female gonangium (cnlaryi'd). 



il Dipliasia paarmanni. l\ml nf hyilmtlicc-a, showing operculum iimn-h (.nlarjicil). 



7. Ili/iliiixin l.-iiiniii/i ( Niitliii'jl. Histal end of liraiich \villi ^miaiij;ia I cnlar_'i j il). 



s. l>i/ih<ixiti l.-iiiriiiili. Kcnir hyilnillii'i-i' (irrfiitly I'li 



it. niiilixxiii kiiicuiili. (iiiiiainiiuin (itruatly ciilarjird 



