74 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



Tribe III. — Vaginariese. 

 Microco/eus chthonoplastes, Thur. 

 Point of Ayr. 



Section II. — HeterocystecB. 

 Order II. — Kivulariace^. 

 Tribe 11. — Mastichotricheae. 

 Calothrix confervicola, C. Ag. 



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

 C. pulvinata, C. Ag. 



Puffin I. ! 

 C. scopulorum, C. Ag. 



Puffin I. ! 

 Riuu/aria hiasolettiana, Menegh. 



Eastham!, Hilbre I.!, Point of Ayr. 

 B. atra, Koth. 



Hilbre I., Mersey, Anglesea. . 



Order V. — Nostochacej^. 

 Anabcena toridosa, Lagerh. 



{SphcBTOzyga carmichcBlii, Eeport I.) 

 Eastham, Point of Ayr, Anglesea, 

 Nodularia harveyana, Thur. 

 Point of Ayr. 



Series II.— CHLOROPHYCE^. 

 Cohort II.— CONFERVIN^. 

 Order I. — Blastosporacej^. 

 Prasio/a stipitata, Suhr. 

 Hilbre I. ! 



Order II. — Ulvace^.. 

 Monostroma grevillel, J. Ag. 



Puffin I. ! , I. of Man ! . En teromorpha iiitestinalis, 

 var. cornucopia', Ahln. recorded from the I. of 

 Man, is only a form of this species. 

 Diplonema confervoicles, Holm, et Batt. 

 Point of Ayr. 



