184 COCHLOSTYLA-HELICOSTYLA. 



(2). Group of C. collodes. 



C. COLLODES Sowerby. PI. 46, fig. 56, 57. 



Imperforate, solid, depressed -turbin ate, the base distinctly flat- 

 tened. Surface polished, straw-yellow, the earlier whorls pink, sut- 

 ure bordered below by a reddish-brown line. Lip expanded, its 

 face and reverse black. 



The form is somewhat trochoidal, base obviously flattened ; sur- 

 face shining, obliquely lightly striatulate. The color is a bright 

 straw-yellow. Whorls 5, convex, the last not deflexed in front. 

 Aperture wide, oblique, white inside ; columella subvertical, deeply 

 entering, arcuate below. 



Alt. 27 i, diam. 30 mill. 



Alt. 23, diam. 26 1 mill. 



Near Boljoon and Sambuan, southern Zebu, Philippines. 



H. collodes SOWB., P. Z. 8. 1840, p. 102. PFR. Monogr. i, p. 

 253; Conchyl. Cab. p. 216, t. 108, f. 7, 8. EVE., Conch. Icon. f. 

 64. Cochlostyla (Hclicostyla) collodes v. MOLL., Landschn. Cebu, 

 p. 239. 



Notable for its bright surface entirely free from hydrophanous 

 cuticle, its flattened base, and black lip. Mollendorff gives meas- 

 urements of larger specimens than those before me : alt. 30, diam. 

 36 mill. 



Variety. Whorls more convex, especially beneath ; no brown 

 sutural line ; lip rather more broadly expanded, reddish-brown in- 

 stead of black. 



Alt. 27, diam. 30 mill. 



Alt. 25, diam. 28 mill. 



This form is not uncommon ; several are before me. 



Variety. Unicolored blackish-chestnut. 



A very rare color-form, recorded by Pfr. and v. Moll. 



The localities given by Pfeiffer and others are very doubtful. V. 

 Mollendorff found it in Zebu, and upon this island my own ex- 

 amples were recently collected by Mr. E. L. Moseley. 



C. INDUSIATA Pfeiffer. PL 46, figs. 53, 54. 



Imperforate, depressed-turbinate, rather solid, nearly smooth ; 

 flesh-colored, covered with a tawny epidermis with pallid bands, 

 having a sutural band of dark chestnut, another at the periphery 

 and a columellar area of blackish. Spire short, conoid-convex. 



