HELIX-CHLORITIS. 259 



margins rather distant, lower one straightened, convexly bent for- 

 ward. Alt. 22, greater diam. 39, lesser 28 mill. (Mart.') 



Southern Celebes. 



H. tuba ALB. Mai. Bl. 1854, p. 214. PFR. Novit. Conch, i, p. 

 25, t. 7, f. 1-3 ; Monogr. iv, p. 288. MARTENS, Ostas. Landschn. 

 p. 285. DOHRN, Conchyl. Cab. p. 574. t. 169, f. 10-12. 



The banding is variable ; it may be expressed in these formulae : 

 00340, 10340 or (123)(45). 



H. ZODIACUS Ferussac. PL 48, figs. 9, 10, 11. 



Shell rather narrowly umbilicate, depressed-inflated, lightly 

 striated, sculptured with very numerous minute impressed points 

 (probably hair-scars) ; orange, tawny, paler beneath, with a broad 

 white, brown-edged band. Spire a little projecting. Whorls 4, a 

 trifle convex, the last rounded, a little more swollen below than 

 above, a little descending in front ; aperture subvertical, trans- 

 versely elliptical ; peristome widely reflexed, thick, white, outside 

 rosy, margins converging, joined by a white callus, the lower mar- 

 gin straightened, bending forward. Alt. 29 , greater diam. 55, les- 

 ser 38 J mill. Apert. long. 35, lat. 26 \ mill. (Mart.) 



Celebes. 



H. zodiacus FER., Hist. t. 75, f. 2. PFR., Monogr. i, p. 373 

 REEVE, Conch. Icon. f. 472. MARTENS, Preuss. Exped. Ostas., 

 Landschn. p. 284. 



Most nearly allied to H. tuba Alb. 



2. Subsection Sulcobasis Tapparone Canefri, 1883. 



Sulcobasis TAPP. CAN., Fauna Malacologica del Nuova Guinea, in 

 Annali del Museo Civico di Storia naturale di Geneva, xix, 1883, p. 

 161. Chloritis and Sphcerospira, in part, of authors. 



Shell large, globose-depressed, unicolored dark chestnut or brown 

 (reddish when the thin epidermis is removed). Spire convex, inner 

 whorls (and apex when not worn) showing minutes granules or hair- 

 scars arranged in oblique rows; body-whorl more or less spirally 

 sulcated, especially on the base. Umbilicus narrow ; aperture wider 

 than high, lip reflexed. Type, H. sulcosa Pfr. 



A group of large, solid shells, characteristic of New Guinea. They 

 differ from Chloritis chiefly in having the spire raised, not concave, 

 and the aperture wider than high. 



