CONCHOLOGY. 



Genus--- TRIPLEX. SpmYs-TRIPLEX FLAVI- 

 CUNDA and TRIPLEX RUBICUNDA. 



Character. — Shell spiral, univalve; the body, spire, and 

 beak invested with three septa? or membranaceous 

 folds, formed into tubercles or spines, the mouth 

 round and carunculated, varying in its colours in 

 the different species. 



A delineation of the Triplex Foliatus has been already 

 inserted in one of our former numbers of the Arcana, and 

 exhibits similar characters with the two present species. 

 The first, which is now in the possession of Dr. Combe., is 

 of a singular character and colour, and has lately been dis- 

 covered at Botany Bay and New Zealand. The mouth is 

 yellow, the body dark brown, but growing paler and brighter 

 towards the top: this shell may be considered as being very 

 rare and valuable. The second is the Triplex Rubicunda, 

 a scarce shell from the Island of Ceylon, the body and 

 spire of a dark brown colour, with a bright red lip encircling 

 the mouth, which is of a dark grey within. This shell is 

 always rather smaller than the other, and has been impro- 

 perly supposed by some collectors, as being of the same 

 species with No. 1. although the analogy of Nature, one 

 would suppose would sufficiently contradict such an opinion, 

 since the red mouth Triplex is found at so considerable a 

 distance as Ceylon and New Holland. But there is also a 

 very considerable difference in the size and form, when 

 examined by the eye of a critic or connoisseur. 



It will perhaps be necessary to inform the reader, that 

 the shells of the Triplex have a strong likeness or relationship 



