16 4 



Proceedings of the Hoyal Irish Academy. 



CONTRACTIONS USED FOR LOCALITIES. 



Ac = Lough Acorryinore, Achill 



Island. 

 AS = Near Achill Sound. 

 B = Church" Lake, Inishbofin. 

 C = Clare Island. 

 CP = Croaghpatrick. 

 Cr = Near Castlebar. 

 CI = Caher Island. 

 Cn = Croaghaun, Achill Island. 

 D = Near Dugort, Achill Island. 

 DL = Doo Lough. 

 I = Inishbofin. 



IT = Lake on Inishturk. 



K = Keel Lough, Achill Island. 



L = Near Louisburgh. 



LG = Lough Gall, Achill Island. 



M = Near Mulranny. 



Mw = Mweelaun. 



RL = Roonah Lough. 



S = Slieveinore, Achill Island. 



SL = Sraheens Lough, Achill Island. 



VL = Valley Lough, Achill Island. 



W = Near Westport. 



LIST OF SPECIES. 



Class RHODOPHYCEAE. 



Order NEMALIONACEAE. 



Fam. Helminthocladieae. 

 Batrachospermum vagum Ag. — C, AS, I, D, Cn. 



Fam. Lemaneaceae. 

 Sachem mamillosa Sirod. — C. 



Class CHARACEAE. 



The following localities are taken mostly from papers on the botany of 

 the district between Mulranny and Castlebar by Rev. E. G. Marshall,' and of 

 Clare Island, Achill, and Inishturk, by R. LI. Praeger • ; the balance are from 

 MS. notes by the latter. All Mr. Praeger's specimens were verified by 

 H. and J. Groves. I did not collect Characeae during my two visits. 



Chara fragilis Desv. — Newport ; Castlebar ; Clare I. ; Achill I. ; Inishturk. 



var. barbata Gant. — Clare I. 



var. delicatula Braun. — Clare I. 

 H. aspera Willd. — Newport ; Castlebar ; Achill. . 



var. subinermis Kuetz. — Achill. 



1 Jouvn. Bot., xxxviii, IS4. 1900. 



-Irish Nat., xii, 277, 1903: xiii, 205, 1904; xvi, 113, 1907 



