127 



This, compared with the last is a stout species. It is 

 abnndantly found towards autumn among the malted roots 

 of the larger fuci J in tiiese situations it grows in great pro- 

 fusion so as to fill up every crevice. It is calcareous, wliitf\ 

 and sometimes tinged with red, and rarely exceeds one inch 

 in heii2;ht, being more inclined to spread than rise. As it 

 thus trails along, many of the branches come in contact with 

 the substance on which it grows, from these points long 

 slender tendrils arise, wl)ich hrmly clasp the fiici and secure 

 the polypidom in its situation. The ct;lls are in the branches 

 and do not stand prominently out as in the last species; they 

 are alternate, and open by oval oblique apertures which have 

 a stout blunt spine on the upper and outer rim. The aper- 

 tures all face on one plane, and the lower portion of ono 

 orifice is immediately above the upper margin of another. 



CREEPING CORALLINE. C. Repfans. Calcareous, 

 creeping, dichotomously branched ; cells semi-allernate, 

 with oblique apertures, arn)ed with four or five spines at 

 their outer rims. PI. xxiii,, fig. 3. 



Creeping Coralline, Ellis' Coral., p. 3", pi. 20, fig. b B. 

 Sertularia reptans, Turton's Lin., vol. 4, p. (J85. Stewart's 

 Elem., vol. 2, p. 448. Cellularia reptans, Fleming's Brit. 

 An., p. 540. Johnston's Brit. Zooph., p. 29!, pi. 3B, tigs. 3 

 and 4. Bellamy's South Devon, p. 270. Crisia reptans, 

 Templeton in Mag. Nat. Hist., vol. 9, p. 409. Lamouroux's 

 Cor. Flex., p. 140. 



Nab. On the roots of the larger fuci, every where 

 common. 



This species is very si»nilar to the last in its habits and 

 spreading character. It is calcareous, spreading and grows 

 to the height of about three quarters of an inch. It is 

 dichotomously branched; and llie branches are linear and 

 diverging. The cells are biserial, alternate, and very 

 loosely arranged ; the apertures are oval, oblique, divergent, 

 and have at their superior and external rim several long 

 tubular spines. These spines, however are much shorter 

 than those of C ciliala, rarely exceeding in length the dia- 

 meter of the cell. The number of these appendages varies 

 in different specimens; Ellis has figured it as having only 

 two, a number I have also seen, but they most commoniy 

 amount to three or four and very rarely indeed to five ; but 

 whether two, three or four, the same number generally per^ 

 vades the whole specimen. At the joints, where they come 

 in contact with the substance on which the polypido-a 

 grows, a few slender tendrils arise, with books, by wliiqU 

 the animal is firmly rooted. 



