163 

 APPENDIX. 



A few days previoufly to the Appendix going to the prefs Lepas 

 this fpecies of Lf/»ti.v (which is eileemed so extremely rare) rAscicuLARis. 

 was thrown up in confid^rable abundance on the fouth coafl: 

 of D von, between Milton and Thudjlone: of these we ob- 

 tained alive all the intermediate fizes, from the fmalled or 

 moft infant ftate, to that of full an inch in length. They 

 were attached in groupes to various fubftances, but particu- 

 larly to a remarkably yellow variety of Fucus veficidofus : 

 others were obferved on fome flcnder leafed Conferva ; one 

 groop on the quill feather of a Gull ; and another on a bit 

 of charcoal. Many of the clufters are furniflied with a 

 whitilh veficular membrane, of confiderable tenacity, as a 

 common base ; pofTibly the fpawn of the larger animal 

 from wliich the young iiTue. The colour of the lliell while 

 the animal inhabitant is frefli, is blueilli, participating of the 

 tint of the animal by reafon of its pellucidity. The peduncle 

 is fliorter than the fhell, and nearly deflitute of wi'inkles, 

 that of the larger fpeciuiens hyaline-blue, the fmaller are 

 paler. 



The body of the animal is blue, furniflied with, twelve 

 bifid tqntacula of a funilar colour but paler, fpotted with 

 brown. 



The only fpecimeii we had before feen, is defcribed in 



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