470 
APPENDIX. 
[B. 
RADI AT A. 
CENTRONIA. 
1. Echinus Ovum ? Veron and Lesueur, Lam. Hist. iii. 48. 
This specimen, presented to the Museum, agrees very well with the 
short description given by Lamarck of this species. 
2. Echinus Variolaris. Lam. Hist. iii. 47. 
This specimen, agreeing very well with the description of one 
found by Peron, is very remarkable ; and has the larger area agru- 
late and ornamented with two rows of white tubercles, nearly as 
large as those in the genus Cidaris ; the pores in the upper part 
are not perforated, and are placed in segments of circles round 
small tubercles. 
3. Echinometra LTJCUNTER. 
Echinus lucunter. Gmel. Sys. Nat. i. 3176. 
Icon. Ency. Method, t. 134. f. 3, 4, 7. 
ANOMALIA. 
Physai-ia Megalista ? Ph'on Voy. i. Lam. Hist. ii. 4S1. 
Icon. Phon, Voy. Atlas, t. 29. f. 1. 
No specimen of this animal was preserved, but Captain King ob- 
serves, that the animal he caught, of which he made a drawing, 
dilfered from Lesueur s figure of P. megalista, in being of smaller 
size, and with fewer tints ; the colour of the tentacula was a brighter 
purple tipped with yellow globules, and the crest of a greenish hue, 
but the general colour of the animal was purple. It measured from 
three-quarters to one inch in length. Captain King considered it 
to be a variety of P. megalista. 
Porpita gigantea. Peron, Voy. ii. Lam. Hist. ii. 485. 
Icon. Peron and Lesueur, Atlas, t. 31. f. 6. 
A very beautiful and accurate drawing of this curious animal was 
made by Lieutenant Roe, M, Lesueur’s figure is also very cor- 
rectly drawn. 
