SPONDYLUS. 



Fig. 28 b. (Mus. Cuming.) 

 The very elegant shell here represented is a white va- 

 riety of S. iniperialis, in which the spines are unusually 

 elongated. 



57. (Mus. Cuming.) 



SpoNDYLUS viOLACEUS. Sjiotid. testd nubtrigono-ovatd, 

 solidiusculd, gibbosa, radiatim Uratd et striata, liris 

 spinis brevibm fortibtm subdistatitibus armatk ; nlbidd, 

 pttrpurascente-violaceo plus minus tinctd. 



The violet Spondylus. Shell somewhat triangularly 

 ovate, rather solid, gibbous, radiately ridged and 

 striated, ridges armed with short strong rather dis- 

 tant spines; whitish, more or less tinged with purple- 

 violet. 



Hab. ? 



A rather solid gibbous Pecten-shaped shell, armed at 

 distant intervals with spines, peculiarly short and strong. 



58. (Mus. Cuming.) 

 SroNDYLUs USTULATUS. 5^;oKf7. testd ovatd, densl radia- 

 tim Uratd, liris priiicipalibus plam-sqimmaiis, squamis 

 spatkulatis, tmmerosis, regularibus, liris intermediis 

 tenuispimsis ,• intense nstulato-riibidd, infra squamas 



The burnt Spondylus. Shell ovate, densely radiately 

 ridged, the principal ridges flatly scaled, scales spa- 

 thulate, numerous, regular, intermediate ridges finely 

 spined ; rich burnt-red, white beneath the scales. 



Ilab. Bermudas. 



Chiefly distinguished by its regular rows of flat spa- 



thulate scales, the shell being of a rich burnt-red colour, 



except at the root of the scales, where it is white. 



Species 59. (JIus. Cuming.) 



Spondylus vexillum. Spond. testd subtrigono-ovatd, 

 planiuscttld, radiatim Uratd, liris distantibus, squa- 

 mis spathulatis armatd, interstitiis tenuistriatis, spar- 

 sitn. spinosis ; rufescente-spadiced, sangvineo circa uni- 

 bonem undnlatd. 



The flag Spondylus. Shell somewhat triangularly 

 ovate, rather flat, radiately ridged, ridges distant, 

 armed with spathulate scales, interstices finely stri- 

 ated, sparsely spined ; reddish-fawn, waved with 

 blood-red round the umbo. 



Hab. 



Of a peculiar reddish-fawn tint of colour, rayed with 

 distant rows of spathulate scales, the interstices between 

 which are loosely set with prickly spines. 



June, 1856. 



