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, uni- 

 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 

 cincinnus 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 a further 

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

 any cincinna I have seen. 



2 



