154 MR. W. WEST OK THE FRESHWATER 



Wat. Alg. of 



New Zeal. Sf Austr. p. 47, tab. 5. fig. 8.) 

 I. Near Westport. 



tfVar. Boergese^ii, nov. var. [C. subpunctulatum, 

 Nord., forma, Boerg. {Bidrag til Bornh. Desmidie-Flora, 



p. 144, tab. 6. fig. 4).] (PI. XXI. fig. 9.) ■ 

 A forma typica differt granulis validioribus, iis (circiter 8) ad 



medium submajoribus, seriebus transversis duabus, apicibus 



distincte sed minute granulatis. 



Long. 29 \x ; lat. 28 fi ; lat. isthm. 9 /x. 



I. Lakes, Clifden to Roundstone ; Ballynahinch. 



f60. C. Arsellii, Boldt. (Siber. Chlor. Taf. 5. fig. 15.) 

 ft Forma compressa. (PI. XXI. fig. 10.) . 

 Forma parvior relative latior quam forma typica, seriebus 

 transversis granulorum validioribus et propioribus basi semi- 

 eellularum. 



Long. 42 fA ; lat. 37 //; lat. istlim. 16 p. 

 I. Lakes, Clifden to Eoundstone. 



61. C. Blyttii, Wille. {Bidrag til Kundsk. omNorg. FersJcv. 

 p. 25, tab. 1. fig. 7.) 



I. Atbry Lougb ; Grlendalough ; Letereen Lough ; Lough 

 Aunierin, — II. Lough G-uitane; near Lough Brin; Cloonee 

 Lough; Adrigole. 



tt62. C. SYNTHLIBOMENini, UOV. sp. (PI. XXI. fig. 11-) 



C. perpusillum, circiter tarn longum quam latum, leviter con- 

 strictum, sinu lato et obtuso ; semicellulse ellipticae et com- 

 pressae, granulis parvis exilibus decern circiter iu ambitu ; a 

 vertice visse elliptic© ; a latere visae subcirculares ; membrana 

 leviter et sparsim subgranulata ; pyrenoidibus binis . 



Long. 12-12-5 a ; lat. 11-125 fx ; lat. isthm. 8-9 h ; crass. 



6-8 



P 



I. Ballynahinch. 



This is much smaller than C. orthostichum, Lund, var. 

 pumilum, Lund (Desm. Suec. p. 25, tab. 2. fig. 10), which it 

 somewhat resembles; but differs in the longitudinally com- 

 pressed cells and in its much broader isthmus as well as in 1 s 

 binate pyrenoids, and much fainter granules, and other cbara ^. . ' 

 It is distinct from G. sphalerostichum, Nord. (Nord. et Wittr. 



