3^ Natural Hiftory of 



to their Cells by the umbilical Ligament, till they are capable 

 of providing for themfelves. 



But whether this Ligament depends upon the Parent- A.ni- 

 mal, as in the Cafe of the veficular Coralline, Plate V. Fig. 

 ^y where the young Polypes are inferted in a tender llefhy 

 Line, that paffes through the Middle of the Branches, we 

 have not been able to diftinguiih, for want of Opportuni- 

 ties of examining them often at the Sea-fide. 



Plate XX. N°. 2. Corallina celUfera ereEia^ ra??iofa &^ plumo/a, fphce- 

 '^■''' ' rulas tejlaceas^ fwmna pai~te aviumque capiium formas^ a 

 latere cellularwn^ ge?'ens. 

 Bird's-head Coralline. 



This curious celliferous Coralline rifes from fmall Tubes, 

 which unite, and pafs into Branches of femi-cylindrical 

 Cells difpofed in two Rows, articulated one into another : 

 Their Openings face the fame Way : On the Outilde of each 

 Cell, we difcover by the Microfcope, the Appearance of a 

 Bird's Head, with a crooked Beak, opening very wide ; the 

 Ufe of which is as yet unknown to us, not having yet feen this 

 Species recent in its proper Element. 



^The Balls, or little teftaceous Figures, are much the fame 

 as in the former Species. This Coralline is of a glafly brit- 

 tle Nature. 



Fig. a^ gives us the Appearance of this Coralline, as it is 

 commonly found. The Specimen, from whence the Draw- 

 ing was taken, was received, among other marine Produdlions, 

 from the Sea-coafl near Dublin. 



Fig /Jj fhews a Branch with its Tuhuli^ Cells, and other 

 Parts magnified. 



N°. 3. 



