86 TRANSACTIONS LIVEEPOOL BIOLOGICAL SOCIETY. 



Cohort VII.— DICTYOTIN^. 

 Order I. — Dictyotace^. 

 Di'ctyota dichotoma, Lamx. 



I. of Man, Puffin I., Anglesea. 

 var. i77iplexa, J. Ag. 

 Puffin I. ! 

 Taoni'a atomaria, J. Ag. 

 Anglesea. 



Series IV.— KHODOPHYCE^. 

 Cohort I.— POEPHYKIN^. 

 Order I. — PoRPHYRACEiE . 

 Porphyra laciniata, C. Ag. 



Puffin I. !, Hilbre I. !, I. of Man ! 

 Bangia fuscopurpurea, Lyngb. 

 Puffin I. !, Anglesea ! 



Cohort II.— NEMALIONIN^. 

 Order I. — Helminthocladiace^. 

 Tribe I. — Chantransiese. 

 Ghantransia virgatula, Thur. 



Hilbre I. !, Puffin I. !, Eastham, I. of Man ! 

 G. secundata, Thur. 



Puffin I. ! 

 C. daviesii, Thur. 



Puffin I. !, I. of Man, Anglesea, Mersey. 

 Tribe II. — Nemalieae. 

 Helminthocladia purpurea, J. Ag. 

 I. of Man. 

 I leave this species in the list, and do not place it among 

 the " doubtfuls " in Appendix L, because the flora of the 

 I. of Man appears to include many rare forms which one 

 would not expect so far north. I have my doubts, how- 

 ever, as to its being a native of our district. Tliis i-ecord 

 stands on Mr. Talbot's authority. 



