170 COCHLOSTYLA-CHROMATOSPH^ERA. 



C. AURATA Sowerby. PI. 56, figs. 68, 69, 70 ; pi. 26, figs. 4, 5, 7. 



Imperforate, depressed-globose, solid ; sulphur-yellow, with a wide 

 orange zone below the suture and (generally) a dark blue line above 

 the periphery ; apical whorl purple, the next outer whorl red. 



The surface is smooth, lusterless, lightly striatulate. Spire low, 

 apex plane ; whorls 4J, convex, the last a trifle descending in front, 

 constricted behind the lip. Aperture slightly oblique, wide-lunar, 

 white inside, showing a black-brown supra-peripheral band wider 

 than that of the outside. Peristome very narrowly reflexed through- 

 out, white ; columella arcuate, sinuous and deeply entering above, 

 spreading in a wide, concave white callus, the slightly elevated edge 

 of .which bounds the umbilical area. 



Alt. 22*, greater diam. 30, lesser 24 mill. 



Northern Luzon and Manilla, Philippines. 



H. aurata SOWB., P. Z. S. 1840, p. 100. REEVE, Conch. Syst. t. 

 166, f. 26; Conch. Icon., f. 46. PFR., Monogr. i, p. 260; Conchyl. 

 Cab., p. 217, t. 108, f. 13, 14. HIDALGO, Obras, t, 24, f. 7. 



The outer lip is decidedly curved forward above, receding in a 

 peculiar manner at its upper insertion. The colors of this shell are 

 peculiarly pleasing. 



Var. Golden above, banded with white at the suture, the base 

 white. (Pfr.) 



C. ERUBESCENS Semper. PL 56, figs. 64, 65. 



Imperforate, depressed-globose, thin, shining, lightly striate and 

 irregularly malleated, golden, ornamented with a somewhat inter- 

 rupted blue band at the suture. Spire little exserted, very obtuse, 

 red ; whorls 4, a little convex, the last much inflated, not descend- 

 ing, very obsoletely angulated, coarctate at the margin. Columella 

 straight, flat, white. Aperture wide-lunar, oblique ; peristome sim- 

 ple, narrowly reflexed, the upper margin curving forward. 



Alt. 25, greater diam. 33, lesser 26 mill. (S.} 



Cabicungan, prov. of Cagayan, Luzon. 



C. erubescens S., Reis. Landmoll. p. 182, t. 9, f. 8; t. 10, f. 12 

 (var.) 



A single example was taken by my servant Antonio at the 

 northern point of Luzon. It stands rather near to C. aurata, but 

 differs in the greater height, want of a wide band at periphery, the 

 malleations on the last whorl, and the contraction of the whorl be- 

 hind the lip. (&) 



