170 HARPA. 



the upper part of the whorls, and by the square and pointed flu- 

 tings of colour between the ribs. Fig. 21 is a close-ribbed variety 

 of this species, and in fig. 18 the markings have become irregular 

 and zebra-like. Kg. 25 represents the young shell. 



3. H. nobilis, Rumph., f. 1, 2, 3. — H. testa subcylindrica, inter 

 costas laevigata, maculis fuscis et rubris seriatim picta; costis pla- 

 nulatis, latis, pallide roseis, transverse nigro-lineatis, ad angulum 

 acutis, infra crenulatis ; apertura mediocri, labio externo infra 

 crenulato. — Narrower and more cylindrical than 11. ventricosa, 

 with no dividing points at the upper part of the ribs. Aperture 

 rather narrowing towards the base. The ribs and outer lip of the 

 aperture are crenulated at the lower part. 



4. H. nablium, Mart., f. 14-17, and 24. — H. testa solida, 

 oblique ovali, superne declivi, caniea, rubro et fusco fasciata, inter 

 costas strigis undulatis laqueata; costis crassis, decumbentibus, 

 plerumque innequalibus, fasciatis, nonnunquam lineis nigris quasi- 

 articulatis; spira elevata, encausta, declivi, lsevi ; columella maculis 

 spadiceis magnis picta. — Our distinct and almost specific variety, 

 f. 16, of which we have oidy seen two specimens, namely, Mr. 

 Cuming's and our own, is the same as figured in the third volume 

 of Martini, under the name H. nablium. Chemnitz afterwards 

 figured a bad specimen of the ordinary variety as " Buccinum 

 Rarpa antiquata." There are many beautiful varieties of H. na- 

 blium (known as H. conoidalis) which pass into each other by in- 

 finite gradations. The slope of the spire, the more obliquely oval 

 form, and other points distinguish them all from //. ventricosa. 



5. H. articularis, Lamk., f. 9, 10, 11. — H. testa inflata, 

 ovali-ventricosa, inter costas grisescente pallide maculis undulatis 

 ornata ; costis regularibus, pallide fulvis, lineis latis transversis 

 duplicatis quasi articulatis ; apertura magna, labio iuterno colore 

 castaneo nigricante late infuso ; spira breviuscula, acute coronata. 

 — This shell is lighter, more ventricose, and less oblique than any 

 of the varieties of H. nablium ; it is of a greyish colour, the spire 

 is shorter, less enamelled, and more sharply crowned with rib- 

 points. The markings between the ribs are pale, while those upon 

 them are very strong, and the colour in front of the shell is uni- 

 formly spread, instead of being in patches, as in the last species. 



6. H. cancellata, C/iemn., f. 26. — H. testa parva, pallida, 

 transverse lineis elevatis duplicatim striata; costis distantibus 

 tenuibus superne acutis ; spira brevi, apice elevato acuto. — As the 

 young of all the species of Harpa are spirally striated, I am not 

 certain of this being a distinct species, but more than half suspect 



