Sertularia. 



Z. HYDllOIDA. 



125 



Polypidom from one to two inches in height, attached by a creep- 

 ing tortuous tubular fibre, very slender and delicate, of a white or 

 pale horn colour, pellucid, variously branched, the branches bifarious, 

 alternate, patent, similar to the stem. Cells opposite, with a joint 

 between each pair, rather long, tubular, the upper half suddenly di- 

 vergent with an oblique entire aperture. Ellis compares the vesicles 

 to a " Lily or Pomegranate flower just opening," but Pallas asserts 

 that the comparisons, as well as the figures of them in Ellis's work, 

 are inaccurate, — a criticism the truth of which Ellis denies in his sub- 

 sequent volume on zoophytes. They appear in fact to vary some- 

 what according to their age, and also from the manner in which they 

 have been dried. They are large and pear-shaped, subsessile, pucker- 

 ed at the top where they are crowned with several spines ; 



Fig. 14. 



and though scattered over the polypidom, they appear to be produced 

 from one side only, and are often arranged in close rows along the 

 branches. — Our figure is the exact portrait of a beautiful specimen 

 in the collection of Dr Coldstream ; and I have a similar one from Mr 

 Bean, but in general the species is very small and sparingly branched. 



6. S. I^VMiLAy cells opposite, approximated, shortly tubular, the 

 top everted with an oblique somewhat mucronated aperture ; vesi- 

 cles ovate. Doody,* 



Plate IX. Fig. 3, 4. 



" Doody, Samuel, an apothecary in London, contemporary with Ray, Peti- 

 ver and Sloane, admitted F. R. S. in 1695. He was chosen superintendant and 

 demonstrator of the garden at Chelsea, an office which he held for some years 

 before his death, which took place in 1706- Petiver characterises him as an " in- 

 defatigable botanist," and "memorable naturalist." Jussieu speaks of him as 

 " inter Pharmacopoeos Londinenses sui temporis Coryphaeus." Pulteney styles 

 him, " the Dillenius of his time ;"and Brown has crowniedhis praise by bestow- 

 ing his name on a genus of New Holland plants. " In memoriam dixi Samuelis 

 Doody, Pharmacopoei Londinensis, qui primus fere in Auglia plantas cryptoga- 



