864 



62. Cerithium dubium (pi. clxxxi. f. 120), Nobis. 



Cerith . testa pyramidali, fulva ; anfractibus angulatis, ventri- 

 cosis, ad angulum pliciferis, subtus ad suturam moniliferis, ultimo 

 subtus unicarinato ; carina rubro punctata ; apertura subquadrata ; 

 canali breviusculo. 



We describe this provisionally, from a single and not quite 

 complete specimen in Mr. Cuming's collection from Van Diernen's 

 Land. The whorls are angulated and pliciferous in the centre, 

 beaded at the suture ; the last with a beaded keel, red spots be- 

 tween the beads. 



63. Cerithium NovyE-Hollandije (pi. clxxvih. f. 54), A. 

 Adams, MS. 



Cerith. testa pyramidali, ad suturam, aperturam et apicem alba, 

 ad medium anfractuum fusco variegataj anfractibus ad suturam 

 inflatis et nodulosis, medio spiraliter striatis et costis interruptis 

 nodulosis cinctis ; apertura paululiim elevata, superne uniplicat-a, 

 antice subangulata; canali brevi, obliquo. 



The suture of this shell is bordered by a white, swelled, nodu- 

 lous band, and the other part of the whorls is girt by two or three 

 beaded and spotted ribs, only one of which is visible in the upper 

 whorls. New Holland, Mr. Cuming's collection. 



64. Cerithium vulgatum (pi. clxxviii. f. 43 ; pi. clxxix. f. 

 67), Brug., E. M. no. 13. Strombus nodosus, Schmt. Murex alu- 

 coides, Ollv. Cerithium thymetus, Meusch.,jid. March. C. vulga- 

 tum variis spinosa, tuberculata, nodulosa, plicata, gracilis. 



Cerith. testa turrita, plerumque ventricosa, grisea. vel fulva, 

 nigro vel fusco variegata, plerumque obtuse echinata, spiraliter 

 striata ; anfractibus tuberculatis, super angulum subexcavatis ; 

 apertura magna, ovali ; canali brevi, aperto. 



The species is common in the Mediterranean, and it is with dif- 

 ficulty that one recognizes the identity between the several varie- 

 ties, particularly the extremely narrow one, f. 67. 



65. Cerithium subnodosum (pi. clxxviii. f. 47), A. Adams. 



Cerith. testa elevata, solida, pallida, fusco varia; anfractibus 

 acute plicato-nodulosis, striatis ; apertura ovali ; margine simplici. 



This shell nearly resembles the narrower varieties of C. vulgatum, 

 but it is of a different texture and lighter colour. The specimen 

 figured is in Mr. Cuming's collection from New Holland. 



