HELIX-PLANISPIRA. 289 



All examples show hair-scars, more separated than in H. exceptiun- 

 cula. 



This species is certainly closely allied to H. kurri Pfr., and may 

 prove a variety of that species. It is proportionally higher and has 

 a smaller aperture. 



Group of H. exceptiuncula. 



Imperforate, or quite narrowly umbilicated ; ends of the broadly 

 expanded lip scarcely converging ; columella with a tooth ; spire 

 not concave, plane, or nearly so, at least the three inner whorls. 

 Surface having minute hairs, or in rubbed specimens hair-scars ; 

 suture white-bordered. 



This group of species resembles the group of H. zonalis in having 

 a white subsutural border ; it differs in being imperforate or nearly 

 so, and in being hairy. The last character forms a bond with the 

 Philippine Island species grouping around H. sanziana, and with 

 the typical forms of Chlorites. The apex, however, is not granulate 

 in these hirsute species of Planispira. 



H. EXCEPTIUNCULA Ferussac. PL 65, figs. 84-87 ; pi. 45, figs. 50-53. 



Shell imperforate, depressed-globose, spire a little raised but the ear- 

 lier 2J whorls in a plane ; isabelline with few or numerous brown and 

 orange bands ; lip white, broadly expanded, reflexed, adnate over 

 the umbilicus; terminations of peristome not converging ; surface 

 covered with short rigid hairs, or if denuded of hairs, showing their 

 regularly arranged scars. 



The shell is elevated, for a Planispira, but the spire is flat-topped. 

 Whorls 4J, the last descending, rounded, not at all constricted 

 behind ,the peristome. There are two principal dark zones, one 

 above, one below the periphery, usually edged with orange ; above 

 the upper zone there are three narrow bands, one edging the suture ; 

 the base is usually brown. The upper whorls are brown or corne- 

 ous, with a sutural white border. Basal lip having a strong tuber- 

 cle on its inner edge, at the point of its union with the columella. 

 Alt. 13, greater diam. 23, lesser 18 mill. 



Moluccas, Halmaheira; Batjan ; Ternate. 



H. exceptiuncula FER., Hist., t. 70, f. 1. PFR. Monographia i, p. 

 311. REEVE, Conch. Icon. f. 501. MARTENS, Ostas. Zool., p. 296, 

 t. 18, f. 3. TAFPARONE CANEFRI, Ann. Mus. Civ. Geneva, 1884, 



p. 155. #. phryne PFR. P. Z. S. 1861, p. 386, t. 37, f. 7 ; Mouogr. 

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