A STRJBA CEA . B UNO DIB >JZ. 



THE GEM PIMPLET. 



Bunodes gemmacea. 



Plate IV. figs. 2, 3. 



Specific Character. Alternate series of large and small warts. Column 

 grey or flesh-coloured, with six equidistant bands of white. Tentacles 

 thick, marked with white oval spots. 



.4 ctinia gemmacea. Ellis and Solander, Zooph. 3. Johnst. Brit. Zooph. 



Ed. 2, i. 223 ; pi. xxxviii. figs. 6—9. Cocks, Rep. 



Cornw. Soc. 1851. 7 ; pi. i. figs. 24, 25, 28. Gosse, 



Dev. Coast, 168 ; pi. viii. figs. 1 — 4. 

 verrucosa. Pennant, Brit. Zool. iv. 103. Lamarck, Anim. s. vert. 



iii. 70. Rapp, Polyp. 50. 

 ? glandulosa. Rapp, Polyp. 52. 

 Cribrina verrucosa. Ehrenb. Corall. 40. 

 Cereus gemmaceus. M.-Edwards, 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- 

 dary ; — the difference 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 



