SERTULARIAD.E : PLUMULARIA. 99 



of branches from a rootlike fibre. In these specimens, of course, 

 several of the distinguishing characters were wanting, but the spe- 

 cies was easily to be recognised by the cells and ovarian capsules^ 

 This variety, Mr. Peach says, is constant : " the stems are in clusters, 

 and rise from trailing: roots." 



To this very distinct and elegant species I have taken the liberty 

 of assigning the Christian name of the lady to whom this work is 

 indebted for by far the greater portion of its illustrations. 



* * Stem composed of many parallel tubes. 



7. P. MYRioPHYLLUM, clustered^ the stems undivided, bellied 

 at distant intervals^ pinnate ; pinna leaning to one side ; cells 

 shortly tubular, seated in the axil of a curved spinous process, 

 the aperture wide and nearly even. Ellis. 



Plate XXIII. Fig. 4, .5. 



Corallina fruticosa pennata, Petiv. Plant. Ital, tab. 2, fig. 11. — Pheasant's -tail Coral- 

 line, Ellis Corall. 14, no. 13, tab. 8, fig. a. A. — Sertularia myriophyllum, Linn. 

 Syst. 1309. Pall. Elench. 153, Ellis and Soland. Zooph. 44. Berh. Syn. i. 

 217. Don's PI. and Anim. of Forfar, 36. Esf.eT Pflanz. Sert. tab. 5, fig. 1—3. 

 Oliv. Zool. Adriat. 288. Z>. Cliiaie, Anim. s. Vert. Nap. iv. 145. — Aglaoplienia 

 myriophyllum, Lamour. Cor. Flex. 168. — Plumularia myriophyllum, Lam. Anim. 

 s. Vert. ii. 124 : 2nd 6dit. ii. 159. Flcm. Brit. Anim. 547. Templeton in Mag. 

 Nat. Hist. ix. 466. Stark Elem. ii. 440. liisso L'Europ. Merid. v. 312. Blainv. 

 Actinolog. 477, pi. 83, fig. 4. Landsborough in Scott. Christ. Herald for April 

 1840, 244. Hassall in Ann. and Mag. N. Hist. vii. 285. Couch. Zooph. Cornw. 

 18 : Corn. Faun. iii. 36, pi. 9. 



Hah. Deep water, rare. Near Dublin, Ellis. Coast of Devon- 

 shire, Dr. Coldstream. " Found by R. Brown, Esq., on the shore at 

 Ballycastle. In Dublin Bay," Teirijileton. Youghall, Miss Ball. 

 Dredged from forty fathoms' water at Sana Island, Mr. Hyndman. 

 Off Whitehead, Belfast Lough, W. MCalla. Coast of the Isle of 

 Man, E. Forbes. Lamlash, coast of Ayrshire, Rev. D. Landsborough. 

 Coast of Cornwall, occasionally parasitical on the Spider and Corwick 

 Crabs, Charles W. Peach. Near Aberdeen, J. Macgillivray. " Of 

 this I have only found one specimen on this coast" (Angusshire), 

 Mr. Don. 



This polypidom is very beautiful, eminently plumous, of a yel- 

 lowish colour, and six inches or more in height. The roots are 

 matted together with numerous entangled fibres. Stalk as thick as 

 a crow-quill, yellowish-brown, straight or slightly curved, swollen at 

 intervals on the back, and simple or once divided : it is composed of 



H 2 



