Fig. «, ji. 



z6 Natural Hiftory of 



that, as if by common Confent, upon fome Warning given, 

 the whole Company at once funk down, and contracted them- 

 felves into the Figure of a Mulberry or Bunch of Grapes, like 

 that at Fig. C. After it had continued for fome Seconds in 

 this Form, it again expanded itfelf as before, and in this 

 manner continued expanding and contradling itfelf, during 

 the whole Time of Obfervation. 



This Species of Polype feems to agree with Mr. Trembkyz 

 Cluftering Polypes ; only his were in frefh, and thefe in Sea, 

 Water. 



Plate XV. N°. 2ii CoralUna exigua repenSj de?iticulis ahernisy fruc^ 

 tus medicce cochieatce cemidis. 

 Snail-trefoil Coralline. 



This very fmall but curious Coralline was found creeping 

 on the narrow-leafed Hornwrack of i?^'s Sy?7opfis^ called by 

 him, Fuci telam lineam fericeamve textu?'a fna mnulantis al- 

 tera /pedes auguftior. R. S. pag. 43. N^. 10. 



From the irregular creeping tubulous Roots, by which it 

 adheres to the Fucus abovi -mentioned, arife little Spikes or 

 Branches, furnifhed with alternate Denticles, mod: curioufly 

 furrowed, like the Seed-Veffels of the Plant called the Snail- 

 trefoil. 



Fig. tty N**. 23. fhews the natural Size of this Coralline, 

 creeping on the Hornwrack. 



Fig. Ay reprefents the creeping Tubes with the Denticles, 

 and one Veficle magnified. While I was at Bright he hnjione, 

 June 1754, I difcovered the Veficles of this Coralline; for 

 I had before apprehended the Denticles to be Veficles ; they 

 differ but little from the Denticles, only in the 3 Teeth that 



are 



