COCHLOSTYLA-HELICOSTYLA. 183 



and at periphery ; and there is usually a brown border below the 

 suttiral and above the supraperipheral bands. 



Surface smooth, shining. Whorls 5, the last but little descending. 

 Aperture oblique, white within ; lip thin, narrowly reflexed, white ; 

 columella subvertical, straight, white. 



Alt. 32, diam. 29 mill. 



Alt. 35, diam. 28 mill. 



Mindoro, Philippines. 



H.fulgens SOWB., P. Z. S. 1841, p. 3. PFR., Monogr. i, p. 221 ; 

 Conchyl. Cab. p. 287, t. 48, f. 3, 4. KEEVE, Conch. Icon. f. 31. 



This is typically quite distinct in coloring from C. mirabilis, but 

 every possible stage between the two is shown in the series before 

 me. That it is idle to attempt to draw specific lines in such a case, 

 I am convinced by the examination of a large suite of shells. 



C. TEPHRODES Pfeiffer. PI. 31, fig. 39. 



Imperforate, subglobose, solid, ponderous ; rufous above, nearly 

 covered by wide streaks of hydrophanous ashen cuticle, the base 

 straw-colored, banded with rufous. Whorls 4i, convex, the upper 

 depressed, rounded, rufescent; columella wide, white, subarcuate. 

 Aperture lunate-subcircular, white inside; peristome simple, re- 

 flexed. Alt. 30, greater diam. 37, lesser 33 mill. (-Pfr.) 



Prov. Pangasinon, Luzon, Philippines. 



H. tephrodes PFR., P. Z. S. 1842, p. 151 ; Monogr. i, p. 254. 

 REEVE, Conch. Icon., f. 112. 



VAR. Alternately and broadly zoned with rufous and yellow 

 under a streaked cuticle. (P/V.) 



This variety is that figured by Reeve and copied on pi. 31. 



C. PLURIZONATA Adams & Reeve. PI. 59, figs. 4, 5. 



Subglobose, covered-perforate, white, clouded with pale brown 

 spots, striate- roughened ; encircled by several fawn and purple 

 bands. Whorls 4, convex, the last rotund. Aperture lunate-trans- 

 verse, brown inside ; peristome strongly reflexed, white, lower mar- 

 gin somewhat calloused. (A. & J?.) 



Mindanao, Philippines. 



H. plurizonata A. AD. & RVE., Voy. Samarang, Zool., Moll., p. 

 62, t. 16, f. 9. REEVE, Conch. Icon., f. 528. PFR., Mon. iii, p. 

 182. 



