HELIX-AC AVUS. 81 



tern of criss-cross scratches, less distinct, even on well-preserved spec- 

 imens than in H. hcemastoma. Whorls 4f, convex, the last descend- 

 ing in front, rounded at the periphery. Aperture bluish-white in- 

 side, the lip and a broad band across the parietal wall deep black. 

 The entire peristome is broadly expanded and revolute ; the colu- 

 mellar margin straight, broad, adnate to the body, and generally 

 visibly truncated at its junction with the basal lip. Parietal callus 

 strong and polished. 



Alt. 51, diam. maj. 64 mill. Alt. 41, diain. maj. 50 mill. 



Ceylon. 



H. phcenix PFR., Mai. Bl. 1854, p. 53 ; Monographia iv, p. 194.- 

 HANLEY & THEOBALD, Conch. Indica, t. 127, f. 6. H. hcemastoma 

 var. PFR., Monogr. i, p. 248. If. melanotragus REEVE, Conch. Icon, 

 f. 367 ; and of others, not H. melanotragus Born. H. senegalensis 

 LAM. in Encyc. Meth., t. 462, f. 4. H. seposita ZIEGL. mss. teste 

 STROBEL, in Giorn. di Malac. 1854, p. 70. 



This is easily distinguished from H. hcemastoma by its larger size, 

 rather less elevation, and especially the lack of encircling bands, 

 which are always present in the hcemastoma. The peristome is rare- 

 ly pink or brown ; and I have seen an albino form with pure white 

 lip. It differs from H. superba and H. grevillei in having a more 

 globose body-whorl, not distinctly bluntly angled at the periphery 

 as those forms are ; the columellar plate of the superba and grevillei 

 is more strongly truncated than in phcenix. 



H. SUPERBA Pfeiffer. PI. 16, figs. 3, 4. 



Shell globose-conoidal, bluntly but quite distinctly angular at the 

 circumference ; lip white, broadly edged with rich orange-chestnut 

 color. 



The form is decidedly conoidal above, the earlier whorls rounded,, 

 the last flat and sloping to the obtusely angular periphery. It is 

 chestnut-brown all over, covered when fresh with a thin yellowish- 

 green coat, which is rubbed off below in front of the aperture. The 

 upper whorls are delicate pink. The surface of the last whorl shows- 

 a few very indistinct shallow spiral furrows above and beneath the- 

 periphery, and is obscurely, very coarsely malleated, or sometimes 

 has obliquely descending low folds above the peripheral angle, 

 visible on the back of the shell ; both this sculpture and the spiral 

 furrows are frequently obsolete or nearly so. The aperture is very 



oblique, rather dark bluish-white inside, and of an oblong-truncate 

 6 



