4^9 



Mhich those species are distinguished; we therefore admit the 

 species, but not without au impression that it may possibly be 

 only the young state of those mentioned above. 



29. Spondylus ciliatus (pi. Ixxxix, f. 52,), 7w6is. S. acu- 

 leatus, JBrod. Proc. Zool. Soc, 1833, p. 5. 



S. testa parva, rotundata, subdepressa, alb^ : spinis aculeatia 

 subrecurvis, frequeutibus, gracilibus horrida ; interstitiis minutis- 

 sime aculeatis. 



A small, thin, rounded shell, crowded with long gracefully 

 curved, extremely slender spines. It is necessary to give a new 

 name to it, in consequence of the name S. "aculeatus/' having been 

 previously apphed to another species by Chemnitz. 



From Lord Hood's Islands, in the Pacific Ocean. It was found 

 by Mr. Cuming attached to a piece of coral on the reefs. 



30. SpOxXDYLUs zoNALis (pi. Ixxxv. f. 12, 18. pi. Ixxxvi. f. 27. 

 pi. Ixxxix. f. 60.), Lam. Anim. s. vert. 6. v. i. p. 183. CAenu. 

 pi. vii. f, 3, 4. S. Herinaceus, C/ienu. Illust. conch, pi. xxv. f. 3, 4. 

 p. 6. 



S. testa ovah, tenui; costis vix elevatis 20 ad 23, spinis sub- 

 numerosis, subdepressis, plerumque truncatis, interstitiis laevibus ; 

 colore fusco purpurascente, inter spinas fasciatim diaposito, umbone 

 albo, nigro radiatim maculato. 



The species nearly resembles S. aurantms, but the spines, or 

 rather scales, are more numerous, and generally flattened at the 

 termination. The interstices are smooth. The umbo is white, 

 spotted with black, as in S. aiirantius and S. Nicobaricus, and the 

 colour, which is generally purple, is arranged in ribands between 

 the spines. We had thought of separating the shell represented 

 by tig. 18, under a new name, and also of admitting Chenu's S. 

 herinaceus to be distinct, but the shell figured (no. 27), presents 

 in the central part, the usual character of S. zonalu, near the 

 margin on the left-hand side, it has the short yellow scales upon a 

 dark purple ground, for which fig. 18, is remarkable, and on the 

 right-hand side, the spines which characterize S. herinaceus ; thus 

 combining the whole. 



Prom the Mauritius, Torres Straits ; Mr. Cuming has them 

 from Isles Ticao, and Minodro, Philippines. 



31. Spondylus candidus (pi. Ixxiv. f. 3, 4, 5.), Lam. Hist, 

 nat. anim. s. vert. vol. vi. p. 188. 



