139 



colour or pale green. It grows in tufts on rocks, or stems 

 of fuci, in deep water ; it is dichotomously branched, and tho 

 branches are filiform and spreading. The joints are long, 

 slender, and cylindrical, of equal thickness throughout, or but 

 slightly enlarged at the upper extremity. The two following 

 species are considered to be varieties of this, by Fleming, 

 Larnouroux and Johnston. 



COCK'S-COMB CORALLINE. Jania Rubens, (var. b.) 

 Dichotomously branched, the upper part of the last joint 

 but one very much enlarged ; the upper part of the lower 

 joint less so. 



Crested or Cock's-comb Coralline, Ellis' Coral., p. 51, 

 no. 7, pi. 24, fig. f F. Corallina cristata, Turton's Lin., vol. 

 4, p. 672. Stewart's Elem.,. vol. 2, p. 440. Ellis and So- 

 lander's Zooph., p. 121. Jania rubens, var. B, Fleming's 

 Brit. An., p. 514. Laniouroux's Cor. Flex., var. C. 

 (Cristata.) 



Hab. Common on fuci on all our shores. 



The chief differences between this and the last are, that 

 the internodes are shorter and stouter, being about two aud 

 a half times as long as they are thick; the superior extre- 

 mities of the joints are more enlarged, especially the last 

 joint but one; and from the joints being shorter, and two 

 branches arising from every joint, it is also stouter, and more 

 bushy than the last. 



It is also liable to great variations of colour, but is gene- 

 rally either red or green; but when washed ashore it is 

 generally bleached. 



SEED-BEARING CORALLINE. Jania Rubens, (var. c ) 

 Dichotomously branched ; the joints swollen, but the ter- 

 minal ones most so. 



Seed-Bearing Coralline, Ellis' Coral., p. 51, no. 8, tab. 21, 

 fig. g G. Corallina spermophoros, Turton's Lin., vol. 4, 

 p. 672, Stewart's Elem., vol. 2, p. 410. Ellis and So- 

 lander's Zooph., p. 122. Jania rubens, var. D. Lamouroux's 

 Cor. Flex. Fleming's Brit. An., p. 514. Templelon in 

 Mag. Nat. Hist., vol. 9, p. 169. 



Hab. On fuci, common. Polpcrro, Laniivet bay. 



This approaches very nearly the Var. B. in character, 

 but the branches are more loosel) agregatedj more Spreading, 

 and rarely found in such tufts. 



These two last are, I think, undoutedly varieties of each 

 other, and the figures of Larnouroux at pi. 9, Bg8. 6 and 7, 

 are very characteristic. 



