rOL. L.] PHILOSOPHICAL TRANSACTIONS. 133 



ments, two polypes, a, a, may be seen — Fig. 7- Cancer arachnoides, on which were seated two 

 species of polypes. A single or simple one at a, and many, inhabiting cells, at b. — Fig. 8. An 

 animal called narsgat, which adheres to the wood of floodgates and ships : on this grew a small 

 plant of coralline, in which I could not perceive any polypes ; but several, b, b, were seated on the 

 animal itself. 



N. B. The delineator has represented the tails of these, and the polypes of the preceding 

 figure too long, in order that they might come the better into view. 



Fig. 9. A branch of red coralline in its natural size. — Fig. 10, The same viewed by the micro- 

 scope, and in which three species of polypes may be seen. — a, b. Two different species, fixed by 

 the tail or hinder part of the body to the coralline. — c. A third species, inhabiting the cells.' — d. 

 A dead polype, — e. The cells of the polypes. — Fig. II. A plant of the corallina tubularia laryngi 

 similk, in its natural size.— -Fig. 12. Avery large branch of this coralline viewed by the micros- 

 cope, in which are discovered 5 different polypes. — a. llie first and largest species, which I name 

 the scarlet polype, and which is shewn at fig. \7 , still more strongly magnified.^ — b. The same sort, 

 but a smaller polype. — c. The third, which is the same as that at fig. 10, letter b, — d. The 4th, 

 which is the same as letter c, fig, 10. — e. The 5lh and least kind, and which is represented again 

 at fig. l6, as well as very highly magnified- —f. The cells which the fourth species inhabits — 

 Fig. 13. Carnllina erecta pmnata, dentkulis alternis cauli appresds : in this there were no polypes, 

 unless in the cellules aflRxed here and there about the trunk. — b. The shells which are shewn magnified 

 at B, fig. 14. — c Eschara millepora minima Crustacea cellulis tubifurmibus, serving as a lodge- 

 ment to animals, and magnified at c. — Fig. 14. Corallina ahietis forma : this I received in Decem- 

 ber 3 its branches were beset with vesicles or eggs, a, a, disposed by pairs in regular order — a. 

 One of these vesicles or eggs shown by the microscope, b, shells, and c, eschara minhna, as in 

 the former figure, where they are represented magnified at b, c, d, d. Two brown corpuscles, 

 which being viewed by the microscope, represent a nidus of worms, d, — Fig. Ij. Corallina pen' 

 tiata et siliquata, taken from an oyster-shell : in this, besides 3 species of polypes, a, a, b, b. (the 

 same as at fig. 10,) c, c, six other insects were observable, which are represented in fig, 2.3, 30, 

 32, — Fig. \6- A kind of very small branched polypes, allied to the jbo/^/>c60 Aow^we^ of fresh water. 

 — A. A polype of this kind adhering to a g)-een marine conferva, and hardly visible to the naked 

 eye. — b. The same viewed by a common magnifier, and at c, by a microscope of consider- 

 able power. — J-ig. 17, The scarlet polype, represented both in its natural size, and magnified 

 at fig. 1 1 and 12, and here shewn very highly magnified. — A- This polype, with its arms expanded, 

 waiting for its prey. — b. The same animal, in the act of contracting its arms when catching its 

 prey, — a. The larger inferior arms, 16, 18, or 20 in number — b. The upper shorter arms, 12, 14, 

 or i6" in number. — c. The upper, pear-shaped part of the body, affixed to the lower. — d. The 

 lower compressed part of the body. — e. The pkce where the polype adheres to the coralline. — c. 

 The same polype seen in front, with the body contracted into a globular form, which is more visi- 

 ble in the larger kind, figured at iPj 20, 21. — Fig. 18. A similar scarlet polype, larger than the 

 rest, from the body of which (where the parts c and d are joined) 8 small branches grew, whicb 

 on their tips had two or three globules with a red spot on the middle of each, and which I in vain 

 hoped would have grown into young polypes. — a. The longer inferior arras of this polype — b. 

 The upper shorter arms. — c. This seems to be the mouth, in the middle of the pear-shaped body 

 of the polype,— Fig. 19- A larger kind, as it should seem, of polypes, called klapkonten, seated 

 on oyster-shelis, and which, when irritated, withdraws its arms entirely into its body. — Fig. 20, The 

 same polype, with its body extended, spreading its arms. — Fig. 21 . The same contracting itself,- 

 having caught its prey — 22, Three species of luminous animalcules represented highly magnified in a 



small drop of sea-water, — Fig. 2 i. A wonderful animal found on corallines taken from buoys 



A. Of this kind were hundreds. — b. Ten or twelve were of this size. — c. The same animal seen 

 through a microscope.— a. antennae — b. the first pair of arms or legs. — c. The second pair. — 



