71 



fered fome change in this refpedt. It is irregularly and repeatedly divided 

 with branches, which are moftly oppofite, but often alternate and not un- 

 frequently crowded together. The ultimate ramuli are very long. What 

 to the naked eye appears to be a (ingle filament, under the higher powers 

 of the microfcope, is feen to confift of many agglutinated, or adhering 

 clofely together in the fame manner as thofe of C.fcetida, with which I 

 apprehend this fpecies poffefles confiderable affinity. Each individual of 

 thefe extremely fiender filaments is feparately jointed. The length of the 

 joints is about equal to their diameter, and fo far as I am able to judge 

 from a dried fpecimen, they each include a globule, of the fame nature 

 with thofe of C. foetida. The fkelch at Plate F (made by Mr. Hooker 

 from a dried fpecimen magnified 4 and 2) will ferve to convey fome idea of 

 the plant, but I apprehend that it fuffers more than moll other fpecies in 

 drying, and it is principally from the obfervations of Mr. Borrer that this 

 deicription has been made. 



116. nana. C. fills ramofis, minutiflimis, fufco viridibus ; ramis ramulifque 

 fub alternis acuminatis ; articulis diametro duplo longioribus. T. 30. 



117. mhiutijjlma. C. fills fub-ramolis, rr.inutifiimis, hyalinis ; ramis fparfis, 

 furcatis, obtufiufculis ; difTepimentis obfoletis ; articulis longitudine varia- 

 bilibus. T. F. 



On Conferva: in the Sea. 



This fpecies, which has been obferved both by Mr. Borrer and myfelf 

 growing parafitically on feveral of the Marine Confervse, is fo extremely 

 minute as to be nearly imperceptible to the naked eye, and even the higheft 

 power of my microfcope is hardly fufficient to afcertam its nature. The 

 filaments are fometimes fimple, but have moil ufually two or three branches 

 which are frequently forked. Difiepiments may now and then be faintly 

 diftinguifned at uncertain diflances from each other, but with this ex- 

 ception no mark of internal organization or even color can be obferved. 

 For the drawing at Plate F, which reprefents the plant magnified 2 and I, 

 I am indebted to Mr. Woods. 



