15 94 Proceedings of the Royal Irish Academy. 



FUCOIDEAE. 



Phoeospureae. 

 Phoeoeoecus adnatus West, comb. nov. — CB, AS, c. See note. 

 Desmarestia viridis Lam. — CI, CB, /'. 



aculeata Lam. — c. 



ligulata Lam. — CI r. 



[Dresnayi Lam.] — Roundstone (teste Johnson, 1899). 

 Dictyosiphon foeniculaceus Grev. — CB, AS, BB, c. 



hippuroides Kiitz. — CI, CB, c. 

 Phoeostroma pustulatum Ruck. — CI r. See note. 

 Litosiphon pusillum Harv. — CI r ; CB, AS, c. See note. 



Laminariae Harv. — CI/. On Alaria. 

 Phloeospora brachiata Born. — CI /. On Bhodymenia palmata. 

 Stictyosiphon tortilis Rice. — CB, BB, c. 



subarticulatus Hauck. — CB c. 

 I adriaticus Kiitz. — Bartraw r. See note. 

 Striaria attenuata Grev. — CB c, AS r. In shallow sub-littoral region. 

 Punctaria plantaginea Greo. — CB r. 



latifolia Grev,— CI, CB,/. 



tenuissima Grev. — CB /. On Zostera. 



undulata J. Ay. — CB '-, BB /-. On Zostera. 

 *Phyllitis zosterifolia Bke. — CI r. 



Fascia Kiitz.— CI, CB, AS, /. 

 Scytosiphon lomentarius J. Ag. — c. 

 Asperococcus fistulosus Hook. — c. 



bullosus Lamour. — CB, CI, c. 

 *Streblonema sphaericurn Derb & Sol. — CI r. In Nemalion multifidwn. 

 ;t Ectocarpus clandestinus Sauv. — CI I. On Fucus serratus, October, 1910. 



luteolus Sauv. — CI/. 



* microspongium Batt. — CI r. On Balfsia verrucosa. 

 tomentosoides Farl. — CI r. On Hiinanthalia and Laminaria. 

 velutinus Kiitz. — CI/. On Himanthalia. 



* Battersii Bom. — CB r. On Taonia atomaria. 

 simplex Cm. — CI c. On Codium tomentosum. 



* Holmesii Batt. — CI, AS, r. In caves and on dark ledges, 

 globifer Kiitz.— CI r. On exposed ledges. 



Mitchellae Harv. (= E. virescens Thur.) — CI r. 

 confervoides Le Jol. — c. 



var. arctus Kjellm. — CB/. 

 siliculosus Kiitz. — c. 



fasciculatus Harv. — CI c. On Laminaria and Himanthalia. 

 tomentosus Lynqb. — c. 

 Hincksii Hare. — CI /'. On Laiiunaria diyatata. 



