SPONDYLUS. 



Plate FV. 



Sjjecies 14. (Mus. Cuming.) 

 Spondylus Butleri. Spond. lestd trigono-omtd, rndta- 

 tim striata et Virata, liris versus marginem obsolelis, 

 prope wmbonem oiscure squamato-miiricatis, delude 

 spinosis, spinis siibnmptis, talis, pancis, promiscue con- 

 tort is ; piirpiin-n-iiiijricanle, circa umbonem nebidatd, 

 spinis r/n,/,' ti//,-ii,:iii.i. 

 Butler's Sri>Miyi,i s. Shell triangularly ovate, radiately 

 striated and ridged, ridges obsolete towards tUc iiiar- 

 gin, obscurely squamately prickled near the umbo, 

 then spined, spines rather large, broad, few, promis- 

 cuously twisted ; purple-blackish, clouded around the 

 umbo, spines bright orange. 

 ffab. Philippine Islands ; Cuming. 



Uniformly distinguished from S. aurdutliis by its more 

 regular Pecten-shape growth and blackish ground-colour- 

 ing, and by the broad straggling character of the spines, 

 which are much fewer in number and more distant. 



Species 15. (Mus. Cuming.) 

 Spondylus multimuric.\tus. Spond. testa ovatd, gib- 

 bosd, suhrmli, irrn/nlari, rudintim dense elevato-stri- 



i///ie ariile sqiiiiiiiiild-iiinriciitis, spinis 



cop 



illide 



aid, striis undii^ 



paucis, brevibus, m/di- irriyiilni-ilinf: 

 aurantid, circa iniiboni-in ulbd, purjii. 

 latd. 

 The m.\.ny-pi!1ckled Spondylus. Shell ovate, some- 

 what gibbous, rather rude, irregular, radiately densely 

 elevately striated, strias everywhere sharply squa- 

 mately prickled, with a few short very irregular 

 spines ; bright scarlet -orange, white, faintly spotted 

 with purple around the umbo. 

 Ilab. Philippine Islands; Cuming. 



A shell of somewhat rude growth, of a bright scarlet- 

 orange colour throughout, everywhere covered with mi- 

 nute prickly scales, iuterspersod with a few irregular short 

 spines. 



Species 16. (Mus. Cuming.) 

 Spondylus bakbatus. Spond. testa subtriijouo-ovatd, 



radiitfivi conspiciic lirntd et striata, liris sqnarn,ato- 

 'innncdlix, rersns i.iniujiiirui dense spinosis, spinis nunc 

 anr/nsf/s, pun-is, nunc lute squamato-spathidatis,varie 

 contortis ; pallide spadiced, carneo-roseo plus minus 

 tinctd, prope umbonetn intense rnfo sparsini pnnctatd. 



The bearded Spondylus. Shell somewhat triangularly 

 ovate, radiately conspicuously ridged and striated, 

 ridges squamately prickled, densely spined towards 

 the margin, spines now narrow, small, now broadly 

 squamately spatbulate, variously twisted ; light fawn- 

 colour, more or less stained with flesh-rose, sparingly 

 dotted near the umbo with deep red. 



Ilab. Philippine Islands ; Cuming. 



Of the same peculiar typical character as S. Sinensis, 

 from which it differs, nevertheless, specifically in detail of 

 sculpture. The spines are of a curiously mixed kind, 

 some being small and narrow, others broadly squamately 

 spathulate and contorted. 



Species 17. (Mus. Cuming.) 



Spondylus Ajiericanus. Spond. lestd ocafd, nunc Pec- 

 tiniformi, nunc rude ijibbosd, radiatim striatd et liratd, 

 liris se.v principalibus squamato-spiinosis, spinis inter- 

 dnni lonffis, ad termitium foliaceo-palmatis, liris parvis 

 infermediis plus minus muricatis ; alba, circa umbo- 

 nem pnrpureo- vel coccineo-rufd. 



The American Spondylus. Shell ovate, sometimes 

 Pecten-shaped, sometimes rudely gibbous, radiately 

 striated and ridged, six principal ridges squamately 

 spined, spines sometimes long and foliaceously pal- 

 mated at the end, ridges small, more or less prickly ; 

 white, purple or scarlet-red around the umbo. 



Lamarck, Anim. sans vert. vol. vii. p. 185. 



Eadcm. Spondylus arac/enoides, lont/ispina, et aricularis, 

 Lamarck. 



Ilab. Hennudas. 



This well-known species varies extremely in growth, 



being sometimes rudely gibbously formed, with the spines 



crowded and irregular, as in the specimen here figured, 



sometimes with the spines fewer and more regular, and 



much longer. 



January, 1856. 



