148 



Z. HYDROIDA. 



Pl-umularia. 



interval between them. Be- 

 tween the cells there is a series 

 of minute tubular or tooth-hke 

 cells, visil)le only with a high 

 mag-nifier. The ovarian vesicles 

 are produced in summer : they 

 are stalked, shaped like a pear 

 or vase, solitary, scattered, and 

 originating always at the base of 

 a polype cell. From the interme- 

 diate cellules, particularly from 

 the one next the polype-cell, 

 there often grows up a small 

 trumpet-hke tube ; and I have 

 seen, in one specimen, all the 

 ends of the branches terminated 

 by four of these tubes diverg- 

 ing in pairs. — 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 nearly all its illustrations. 



" O quse fontibus integris 



Gaudes, apricos necte flores, 



Necte meo Lamiae coronam, 

 Pimple'i dulcis ! nil sine te mei 

 Possunt honores." Hor. Carm. i. ode 26. 



* * Stem composed of many parallel tubes. 

 7. P. MYRiOPHYLLUM, clustered, the stems undivided, bellied 

 at distant intervals, pinnate ; pinncR leaning to one side ; cells 

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

 aperture wide and nearly even, Ellis. 



Plate XIX. Fig. 4, 5. 



Corallina fruticosa pennata, Petiv. Plant. Ital. tab. 2. fig. 11. Pbea- 



sanfs-tail Coralline, Ellis, Corall. 14, no. 13, tab. 8, fig. a. A Ser- 



tularia myriophyllum, Linn. Syst. 1309. Pall. Elench. 153. Ellis and 

 Soland. Zoopb. 44. Berk. Syn. i. 217. Turt. Gmel. iv. 678- Turt. 



Br. Faun. 213. Stew. Elera ii. 443. Bosc, Vers,iii. 109 Aglaophenia 



myriophyllum, Za7Bo«r. Cor. Flex. 168. Corall. 74. Plumularia myrio- 

 phyllum, Zam. Anim. s. Vert. ii. 124. 2de edit. ii. 159. Flem. Brit. Anim. 

 547. Templeton in Mag. Nat. Hist. ix. 466. Stark, Elera. ii. 440. 



Risso, L'Europ. Merid. v. 312 La P. myriophylle, Blainv. Actino- 



log. 477, pi. 83, fig. 4. 

 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," Templeton. 



4 



