ASTR.EACEA. 
BVNODIDM. 
THE GEM PIMPLET. 
Bunodcs gemmacea. 
Plate IV. figs. 2, 3. 
Specific Character. Alternate series of large and small warts. Column 
grey or flesh-coloured, with sis equidistant bands of white. Tentacles 
thick, marked with white oval spots. 
Actinia gemmacea. Ellis and Solaxdeu, Zooph. 3. Johnst. Brit. Zooph. 
Ed. 2, i. 223 ; pi. xxsviii. figs. 6—9. Cocks, Rep. 
Cornw. Soc. 1851. 7 ; pi. i. figs. 24, 25, 28. Gosse, 
Dev. Coast, 168 ; pi. viii. figs. 1 — 4. 
venmcosa. Pennant, Brit. Zool. iv. 103. Lamarck, Anim. s. vert. 
iii. 70. Rapp, Polyp. 50. 
1 glandulosa. Rapp, Polyp. 52. 
Oribrina verrucosa. Ehrenb. Corall. 40. 
Cereus gemmaceus. M.-Edwakds, Corall. i. 265, pi. C 1, fig. 3. 
Bunodes gemmacea. Gosse, Tr. Linn. Soc. xxi. 274; Ann. Nat. Hist. Ser. 3. 
i. 417 ; Manual Mar. Zool. i. 29. 
GENERAL DESCRIPTION. 
Form. 
Base. Adherent to rocks ; in general but slightly exceeding the column. 
Column. Pillar-like, rising to a height twice the diameter. Surface 
covered with round warts, arranged in forty-eight vertical rows, according 
to the following arrangement : — six primary rows equidistant, distinguished 
by their white colour, and by their superior size ; six secondary rows, 
intermediate ; twelve tertiary, intercalated between the primary and secon- 
dai-y ; — the difierence in size between these is slight, but is often dis- 
cernible ; finally a row of quaternary warts (twenty-four in all) is placed 
between all the above, and these are much smaller and less distinct. All 
these become indistinct towards the base, being traceable downwards in 
the ratio of their order; while towards the summit they become larger 
and bladder-like, the uppermost individuals of all the series crowning the 
