COCHLOSTYLA-HYPSELOSTYLA. 17 



The more typical forms have the periphery quite rounded, the 

 lip scarcely expanded, and the apex is never of a different color from 

 the spire. 



Typical cincinna (pi. 10, figs. 1, 2) is white, or very pale buff, tini- 

 colored or having the columellar area pink, or the columellar area 

 brown and the lip pink ; dark patches of cuticle may be either 

 present or absent. 



Var. gracilis Lea (pi. 10, fig. 5) is a dark variety, but under the 

 name may be included the pink and pink-brown examples (figs. 3, 



4). 



Var. virens Pfr. (pi. 10, fig. 10) is white, becoming pale green 

 below. It is from the island Burias. 



Var. xpretus Reeve (pi. 10, fig. 8) is "pale straw color, chestnut- 

 black around the umbilicus and edge of the aperture, covered 

 toward the base with a thin burnt-brown epidermis. It differs from 

 cincinmts in being of a more truly conical form." Habitat, 

 Romblon. 



Var. romblonensis Pfr. (pi. 9, fig. 58 ; pi. 6, fig. 23) has the form 

 of typical cincinna. It is white or pallid buff', with dark bands at 

 suture and periphery and a dark columellar area. Lip colored or 

 not. This form has been united with C. subcarinata, but errone- 

 ously, that species having the lip more expanded than this. Fig. 

 23 is drawn from a specimen before me. 



C. SUCCINCTA Reeve. PI. 10, fig. 14. 



Imperforate, ovate-pyramidal ; rather solid, smooth ; white, with 

 one or two chestnut bands and a blackish-chestnut basal area. 



Spire elongated, rather obtuse ; whorls 7, slightly convex, the 

 last about two-fifths the entire length, rounded. Columella white, 

 somewhat twisted. Aperture oblique, truncate-oblong ; peristome 

 brown, scarcely thickened, very narrowly reflexed. (Pfr.') 



Alt. 62, diam. 28 ; aperture, alt. 26, width 15 mill. 



Philippines. 



Bui. succinctus REEVE, Conch. Icon. t. 74, f. 534 (1849). PFR., 

 Monogr. iii, p. 310. 



I have not seen this form. It may prove to be merely 

 development of the cincinna-romblonensis stock, but it is larger than 

 any cincinna I have seen. 



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