DBLB88EB1 \< I 96 



ub a near resemblance in the fructification. The cells com- 

 posing the frond in the Nullipores or Melobesice are lo 

 ami narrower than those of the Mildenbrandtia, bni ar- 

 ranged in an order nearly similar. It forms a thin skin- 

 Like film, bo closely applied to the surface of the body on 



which it grOWS, that it is impossible to remove a specimen 



without laceration. lis colours are sometimes much 



brighter than at others, especially in places where it is 



exposed to the dripping of fresh water. 



L. HAPALIDIUM. 



162. phyllactidium {The fan-shaped Hapalidium) ; "plani cal- 

 careous, consisting of a single plane of cellules, whic 

 disposed in radiating dichotomoua series forming an ap- 

 pressed flabelliform frond," Ktz. (Atlas, PL XXXV. 

 Fig. 162.) 

 Hah, Common on ! 



The aspect of this little parasite is strikingly similar to 

 thai of a Coleochcste, but the calcareous nature of the 

 cellular membrane seems to point to a differeni affinity. 

 In the absence 1 of information respecting its fructification, 

 1 can form but a guess as to the family in which it may 

 most properly be arranged. In suggesting the ( 'orallinaa a 

 ] am chiefly guided by the calcareous tissue: the habit, 

 indeed, is not unlike that of some of the minute Hfeli 

 Our figure represents the young plant, which afterwards 

 becomes much more lobed and expanded. 



Order 10. DJELJESSESIACJEJB. 

 LI. DELESSEKIA. 



1G3. sang-uinea (The blood-red Delesseria) ; Btem cylindrical, 

 cartilaginous, branched, bearing oblong or obovate, trans- 

 versely-veined leaves, entire at the margin ; midrib per- 

 ourrent, Btrong ; lateral veins opposite; tubercles stalked, 

 attached (in winter) to the membraneless midribs of old 

 leai tensely aggregated in small sporophylla 



(produced in winter) on old midribs, Lamour. Ess. p. L24, 

 (Atlas, PL WWII. Fig. L69.) 



Wormskioldia Banguinea, Spr. Fucus Banguinens, /. 



Hub. [n deep rock-pools, between tide-marks, generally at the 

 shad} Bide of the pool, under projecting ledges of rock. 



biennial. Fruit Lng in v, inter. 



This tin,' plant, whether we regard the splendour of it^ 



