Veficulated Corallines. 25 



In September 1753, I receiv^ed a recent Specimen of one of 

 this Species in Sea-water, and had an Opportunity to difco- 

 ver in the Microfcope the Form and Motion of the Polype 

 that poflHied the Infide of it, and of tracing the main Body 

 through all its undulated Cafe, as it is exprefl'ed in the 

 magnified Figure at C. In the fame Plate, Fig. c, is the na- 

 tural Size of the Piece magnified. Since this Obfervation, I had 

 an Opportunity, \n June ij ^a^.^ 2i\. Brighthelmjlone^ of feeing 

 this Coralline in a more perfect manner ; and have had the 

 Honour of laying the Account of ir, with a very curious 

 Drawing by Mr. Ehret^ before the Royal Society. 



The Form of the Veficles is like a Cup, in which the princi- 

 ple Parts of the Animals are placed: We have feen them thruft- 

 ing out their Claws or Tefitaculi in fearch of Prey, and have ob- 

 obferved them at the fame time moving their Cups with their 

 fcrew'like Stalks atPleafure; whilft the whole Trunk of the Po- 

 lype in the Infide ot the Stem, or horny Cafe, was at the fame 

 time affedled with their Motions ; for they appeared but as fo 

 many Arms united to, and ot a Piece with, the Body. 



N°. 20. Corallina rajnofa^ ramis Jlngulh equi^tiformibust ^^ Plate xiir. 

 fummis capillament'is contortis et ve?'ticillatijn difpoJttJSj vc- ^'*' "' ^' 

 Jiculas campaniformes gere?is, 



Horfe-tail Coralline with bell-fhaped Cups. 



This curious Coralline was colledled on the Sea-coaft near 

 Whitehaven^ in Cutnberland^ by that learned and eminent Phy- 

 fician Dodlor William Brownrigg^ F. R. S. ; and appears thro' 

 the Microfcope to be of the moft lingular Strudure oi any 

 yet defcribed. 



It confifts of fundry Branches, and every Branch is com- 

 pofed of many ftrait united fmall Tubes, which, at certain 

 equal Diftances, fend off fmall capillary fcrew-like Stalks, each 



of 



