416 



"Shell ovate, oblong, considerably ventricosCj orange, saffron 

 colour or cliesnut, marbled with white. Spines broad, open, and 

 somewhat distant. PiUar with tliree plaits. Epidermis brown. 

 Aperture wade, of an orange colour.''^ 



Moreton Bay, in New Holland. 



10. Melo umbilicatus (pi. Ixxxii. f. 18. pi. Ixxxiii. f. 29, 

 30.), Brod. 



" M. testa ventricosissima, subcompressa, fiava albo-marmorata, 

 vel alba flavo reticulata, bifasciata, fasciis transversis nigro-casta- 

 neis, subtessellatis ; spira apicem longe prsetereunte, spinis magnis, 

 raris; apertura latissima; columella quadriplicata ; epidermide 

 pallide virescente, tenuissima; long. 12|. lat. 9. poll. 



" Shell very ventricose, somewhat compressed, yeUow or reddish- 

 yellow, marbled with white, or white reticulated with the same colours, 

 girt with two narrow, blackish chesnut, somewhat tessellated bands. 

 The spire projects far beyond the apex, which in old specimens is 

 seen as it were at the bottom of an excavation, while in very 

 young shells it projects beyond the spire. The spines are large, 

 long and somewhat distant. The aperture, wliich is of a light 

 yellow, or very pale orange, is very wide, measuring upwards of 

 six inches and a haK in old individuals. The pillar has four plaits, 

 in some very young shells, and in all the old ones which I have 

 seen ; those of intermediate growth have generally but tliree. As 

 the shell increases in growth the colours become less vivid, and 

 the bands more interrupted, till at last both are almost lost." 



Moreton Bay, New Holland. 



LIST or FIGUKES IN PLATES LXXXI. TO LXXXIII. 



1,2, 3,4, 5. M. Indicus, sp. 1. 



6, 7, 8. — tessellatus, sp. 2. 

 9, 13, 14, 19. — iJ:thopicus, sp. 3. 

 10, 11, 12. — nauticus, sp. 4. 



15, 21, 22. — armatus, sp. 6. 



16, 17, 20. — diadema. sp. 5. 



18, 29, 30. — umbihcatus, sp. 10. 



23, 28. — mucronatus, sp. 9. 



24, 25. — Miltonis, sp. 7. 

 26, 27. — Broderipii, sp. 8. 



