32 HELIX-PAPUINA. 



Intermediate between H. turris and H. ferussacL It differs from 

 the latter in being larger, lighter-colored, and having a columellar 

 tooth. 



H. LEONARDI Tapparone Canefri. Unfigured. 



Ovate-conoid, perforate, rather solid, pale yellowish-green or red- 

 dish, sometimes subfasciate on the base; spire conical, apex subacute. 

 Whorls 5, convex, separated by rather deep sutures, decussated by 

 spiral and longitudinal subgranose striae; last whorl large, rather 

 tumid, subcontabulate above, subangular below, the base convex. 

 Aperture very oblique, ovate-lunate ; fauces citrinous or brownish- 

 red ; peristome white-edged, broadly retiexed, margins joined by a 

 thin callus, the upper and outer regularly curved, basal nearly 

 straight ; columellar margin reflexed above the perforation, dilated 

 at the insertion, the base forming a more or less developed tooth. 

 Alt. 34, greater diam. 30, lesser 22 mill. (Tapp. Can.} 



Ansus, Island of Jobi, Bay of GeelvinJc ; Korido, Is. of Misori, 

 Geelvink Bay, New Guinea. 



H. leonardi T. C., Ann. Mus. Civ. Genov. 1877, p. 137. 



H. TURRIS H. Adams. PL 17, fig. 28, 29. 



Shell nearly covered perforate, solid, conical; sulcate-striate ; 

 buffish-tawny ; spire elongated, rather acute ; whorls 7, a little con- 

 vex at the sutures, subconcave in the middle, the last not descending 

 in front, angulated, the base nearly flat; aperture oblique, 

 triangular; peristome simple, broadly expanded, white, the upper 

 margin sinuous, arched forward ; basal margin reflexed, with oblique 

 columella triangularly dilated, reflexed above the perforation and 

 subdentate inside. Alt. 37, greater diam. 36, lesser 30 mill. (Ad.~) 



Island of Waigheu. 



H. turris H. AD., P. Z. S. 1865, p. 415, t. 21, f. 4, 5. PFR., 

 Monogr. v, p. 325. Geotrochus turris WALLACE, 1. c., p. 411. 



H. FERGUSONI H. Adams. PI. 3, fig. 54. 



Shell imperforate, rather thin, conical, obliquely flexuously 

 plicate-striate ; seen under a lens to be closely spirally striolate ; 

 pale-tawny ; spire elevated conical, apex rather acute, suture hair- 

 margined ; whorls 7, nearly flat, the last not descending, acutely 

 carinated at the periphery, the base nearly flat. Aperture oblique, 

 triangular-ovate, the peristome broadly expanded, slightly reflexed, 

 white, margins joined by a thin callus ; right margin flexuous, col- 



