100 



Crisia luxata, Fleming's Brit. An., p. 540. Johnston's 

 Brit. Zooph., p. 262, pi. 31, fig. 5, 6. 



Hab. On the roots of sea-weed, corallines, back of the 

 Corwich crab, very common. Lantivet bay, Talland sand 

 bay, Polperro, "Whitsand bay. 



This species bears a very close resemblance to the last. 

 It is calcareous, jointed, erect and about one inch in height ; 

 it grows in small and elegant tufts which are united to 

 each other by hollow, calcareous, black jointed tendrils. 

 The root, immediately below the first internode is straight 

 and narrow, but above is large and globular and from 

 its inferior surface numerous slender jointed tendrils pro- 

 ceed, embracing the surface on which it grows and firmly 

 root it to the spot. It is dichotomously branched, and in 

 young specimens, the branches all arch inwards. The cells 

 are biserial, semi-alternate, tubular, adnate, frequently rough 

 or frozen, and speckled. The apertures are oblique, and 

 slightly uneven. The joints are black, which give the poly- 

 pidom a speckled appearance; the inlernodes are of various 

 lengths and bear an unequal number of cells; below, they 

 are narrow and gradually dilate into the two lower cells. 

 Beside the hollow tendrils which form the roots, others arise 

 from various parts of the polypidom near the joints, which 

 are also hollow, jointed, and assist the rooting the poly- 

 pidom to the spot. 



This is a more robust species than the last, and has its 

 joints always black. The cells are sometimes prominent 

 and the apertures divergent, as in the Crisia eburnea, but 

 as it is always black jointed and much stouter it cannot be 

 mistaken. 



NOTAMIA. Fleming. 



Generic Character: Polypidom plant- like, sub-calcareous, 

 rather soft and flexible when dry ; dichotomously 

 branched; cells opposite, united by the back, a joint above 

 and below each pair. 



COAT OF MAIL CORALLINE. Notamia Loriculata. 

 Cells sub-cylindrical and obliquely truncated ; apertures 

 plain. PI. 18, fig. 4. 



Muscus coralloides mollis elatior ramossissimus Raii, 

 Synop.. vol. 1, p. 34, no. 6. Coat of Mail Coralline, Ellis' 

 Coral., p. 40, no. 7, pi. 21, fig. b B. Cellaria loriculata, Ellis 

 and Solander's Zooph., p. 24. Sertularia loriculata, Tur- 

 ton's Lin., vol. 4, p. 684. Stewart's Elem., vol. 2, p. 447. 

 Notamia loriculata, Fleming's Brit. An., p. 541. John- 

 ston's Brit. Zooph., p. 263, pi. 30, figs. 12 and 13. 



Hab. Near the shores, rare._ Polperro. R. Q. C. 

 Goran Haven. Mr. Peach. 



