218 BANGIA. 



On rocks and wood in the sea, near high-water mark ; not uncommon. 

 Forming a lubricous, blackish-purple, occasionally greenish stratum. 

 Filaments several inches long, straight or curled, variable in breadth ; the 

 narrow ones containing often but a single row of granules; the broader con- 

 taining 4 or 5 rows. Granules large, dark purple, square, closely set. 



2. B. ciliaris, Carm. ; " filaments gregarious, very minute, 

 simple, straight, compressed, purple ; granules binate, glo- 

 bose." Carm. MSS. ; Hook. Br. Fl.p. ii. p. 316. 



On the old leaves of Zostera marina, Appin, Capt. Carmichael. Annual. 

 Spring. " This, the minutest of all the Bangice, grows on the edges of the 

 leaves in the form of a delicate pink-coloured fringe. Filaments half a line 

 in length, gelatinous, straight, compressed, rather torulose. Granules large, 

 globular, arranged in pairs." Carm. The granules are occasionally in a 

 single series. 



3. B. ? ceramicola, Lyngb. ; filaments very slender, flaccid, 

 rosy ; articulations equal in length and breadth ; endochrome 

 at length globular, and escaping through the tube. Harv. I. 

 c. p. 355 ; Lyngb. Dan. t. 48 ? 



In rocky pools on various small Algae, at Appin, Capt. Carmichael. 

 " Filaments very slightly tufted, or rather gregarious, about an inch long, 

 very slender and flaccid, of a purplish rose-colour. Articulations about as 

 long as broad, becoming at length gibbous, when the internal mass, which 

 was at first square, assumes a globular form, and bursts through the tube." 

 Carm. 



4. B. ? carnea, Dillw. ; " filaments simple, slender, short, 

 pale red ; articulations torulose, 2 or 3 times longer than 

 broad, endochrome contracted into a solitary globule." Dillw. 

 Conf. t. 84 ; Harv. 1. c. p. 355. 



On Conferva in the river near Loughor, Glamorganshire, near its conflu- 

 ence with the sea, Mr. W. W. Young. 



5. B. ? elegans, Chauv. ; filaments minute, dichotomously 

 branched, with very patent axils ; branches containing a 

 single row of simple or binate, purple, grain-like cells. 

 Harv. Phyc. Brit. t. ccxlvi. 



Parasitical on the smaller Algae, very rare. Annual. Dredged in 

 Strangford Lough, at Portaferry, adhering to Gracillaria confervoides, Mr. 

 W. Thompson (1838). Forming minute tufts, 1 2 lines long, resembling 

 Callithamnia Daviesii in colour and size. The younger parts of the fila- 

 ments contain a string of closely set lenticular grains or cells, arranged 

 like those of a Lyngbya. In the older parts the cells are less regularly 

 placed, and are more distant, of a broadly spindle-like form with a division 

 in the centre, as if composed of two conical or sugar-loaf bodies. These 

 are probably the ripe spores, which escape on the bursting of the tubular 

 filament. This plant can hardly remain in Bangia, and will probably form 



