Clare Island Survey — Fresh-water Algae. 16 27 



Oocystis elliptica West. — C, I. 

 Nephrocytium Naegelii Gran. — C ; plankton of LG-. 

 lunatum West.— C, L, Cr, W. 

 agardhianum Nag. — L, I. 



*obesum West. — C, M, CI ; Cr, size of cells in colonies of 25-27 x 15-16^. 

 colonies 60 x 48/*. 

 Eremosphaera viridis De Bary. — C, up to 151/* broad ; M, average 139/". broad ; 



IT, W, D. 

 *Palmellocoecus miniatus (Kiitz.) Chodat. — C, mostly 3/* broad. 

 *Chlorella vulgaris Beyer. — C, L, D, W. 



Sub-fam. Tetraedrieae. 

 Tetraedron caudatum (Corda) Hansg. — L, VL, DL, W, C. 

 *limneticum Borge. — VL, DL ; plankton of LG. 

 regulare Kiitz. — C, W. 

 enorme (Kalfs) Hansg. — C, W ; Cr, 35/* wide. 

 Cerasterias longispina (Perty) W. & G. S. West. — D. 



var. HEXACTINUM var. nov. — Var. processibus radiantibus sex 

 ex centro commune. D. 



Sub-fam. Phythelieae. 



Chodatella breviseta W. & G. S. West.— C, D. 



*Lagerheimia genevensis Chodat. — D, from several localities ; C, AS. 

 subglobosa Lemm. — D. 



Sub-fam. Dictyosphaerieae. 

 Dictyosphaerium pulchellum Wood. — L, K ; plankton of EL, abundant ; 

 plankton of LG ; W. 

 ehrenbergianum Nag. — L, LG, W. 

 *Tetracoccus botryoides West.— I ; C, 4"5-5'5 in diameter, in another place 

 not more than 4/t. 

 Botryococcus Braunii Kiitz. - C, L, SL, C, I, Cr. In some of the many places 

 in which it was seen, as in Clare Island, the peculiar state described 

 as Ineffigiata neglecta was the only state observed. 

 *protuberans W. & G. S. West. — C ; Cr, cells 7-8*5/* broad mostly. 



Fain. Palmellaceae. 

 Sub-fam. Palmelleae. 

 Palmodactylon varium Nag.— C, width of cells 63-7*5/*. 

 Palmella mucosa Kiitz.— M; W, 8-8-11/* in diameter. 

 *miniata (Leibl.) Chod. — Mw, 



D 2 



