History of British animals - University of Guam Marine Laboratory

Dynamena. ZOOPHYTA. SERTULARIAD/E. 543Height several inches, erect and stiff; base of numerous tubes, which, byuniting, form those larger parallel connected tubes of which the stem consists;the smaller branches are simple, and diverge at a regular angle, each supportinga few alternate tubular cells, with one or two transverse wrinkles ; vesicleson the sides of the branches, irregularly oval, with a tube on one side, a littleproduced at the summit.166. S. muricata.— Stem compound, irregularly branched,cells short and narrow.Sol. Ellis, Zooph. 59. t. vii. 3.—In f. deep water, on old shells, severalfathoms beyond low water-mark.Height two or three inches ; stems erect, irregularly divided ; branches shortand simple, the jointsare well marked ; the cells are short and narrow ; the vesicles,which are attached to the stem by a short and narrow stalk, are globular,with longitudinal spinous ridges. Though not uncommonly brought ashoreby the Newhaven oyster-boats from the Forth, I have never obtained a perfectspecimen. The cells, when most entire, seem cylindrical, wrinkledacross, and somewhat contracted towards the notched orifice.— 167. S. Templetoni. Stems simple; cells short and narrow.Flem. Edin. Phil. Journ. ii. 88—Loch of Belfast, Mr Templeton.Height about an inch ;slightly branched ; cells narrow, tubular, produced ;the vesicles oval, lengthened, narrow at the b.ise, covered towards the summit,with lanceolate spines —This speciesis of a more delicate texture thanthe preceding,the vesicles are of a different shape, and the stem is simple.It was given to me by an accomplished naturalist, the late Mr Templeton ofOrange Grove, Belfast. It adheres apparently to a gramineous leaf, probablyof a zostera, and therefore may be considered an inhabitant of shallowwater.Gen. LXIV. DYNAMENA.—Cells in pairs, opposite, usuallywith a joint above and below each.168. D. tamarisca.— Loosely branched alternately ; cells cylindric,truncated, with an uneven margin.Sea Tamarisk, Ellis, Cor. 4. t. i. f. 1—Sertularia tam. Linn. Syst.i. 1307.Pall. EI. 12!). Lamb. Cor. Flex. 188—On old shells in deep water.Height sometimes nearly a foot ; branches few, spreading ; cells oblique ;vesicles narrow at the base, wide at the top, where it is truncated with a shortcentral tube.169- D. abietina.— Branches rather close, alternate, makingthe stem bifariously pinnated ;cells subcylindrical, with evenmargins.Sea Fir, Ellis, Cor. 4. t. i. f. 2—Sertularia ab. Linn. Syst.i.1307. Pall.El- 133—Lamour. Cor. Flex. 187— Very common beyond low watermark.Height nearly a foot stem ; arising from wrinkled tubes, which adhere tostones or shells ;the cells are usually opposite, sometimes alternate, and thestems seldom exhibit any joints vesicles ;egg-shaped, with a narrow base, anda contracted subtubular summit.170. D. cupressma,— Stem with alternate branches, which are