CHLOROSTOMA. 171 



coast of Japan (Nagasaki, Decima) ; l)ut I share the doubt ex- 

 pressed by Fischer as to its actual occurrence there. The relative 

 altitude and the size are extremely vai'iable. 



C. PULLiGO Martyn. PI. 26, figs. 23, 24, 25. 



Shell deeply and widely unibilicate, conical, solid, dull purplish 

 or brown, when worn often orange, obliquely streaked with white 

 or unicolored ; spire elevated ; whorls 7, flattened, the upper ones 

 finely spirally striate and sometimes very obsoletely plicate ; the re- 

 mainder smooth, obliquely finely striate ; base flattened, slightly 

 convex, obliquely streaked, concave and white around the umbilicus ; 

 body-whorl bluntly angled at the periphery ; aperture very oblique, 

 smaller than usual in Chlorostoma ; columella thin, obtusely den- 

 tate, ending above in a white callus which partly covers the umbili- 

 cus. Alt. 35, diam. 32 ; alt. 22, diam. 22-27 mill. 



Sitka to California. 



Trochus pulligo Martyn, Universal Conch., t. 76. — Philippi, 

 Conchyl. Cab., p. 84, t. 15, f 3.— Fischer, Coq. Viv., p. 232, t. 80, 

 f. 1. — T. marcidus Gould, Bost. Jonrn. N. H., xvi, 1852, p. . 



A handsome and rare species, more widely umbilicated than any 

 other from the West Coast. There is no spiral ridge within the 

 umbilicus. 



C. MONTEREYi Kiener. PL 27, figs. 27, 28, 29. 



Shell unibilicate, strictly conical, rather thin, light olivaceous or 

 pale corneous; spire conical, with nearly straight outlines; apex 

 acute ; sutures linear ; whorls 7, flattened, encircled by numerous fine 

 lira?, wliich become obsolete on the lower whorl, which shows usually 

 very ill-defined obliquely descending small folds, at right angles to 

 the incremental strife; body-whorl acutely angular at the periphery; 

 base flat, spirally, snbobsoletely Urate; aperture subhorizontal ; outer 

 lip thin, margined with brown or corneous; columella subhorizontal, 

 curved, toothed below the middle, receding above, not spreading 

 around the umbilicus as in the other species; umbilicus funnel-shaped, 

 rapidly becoming very narrow, white within, its edge defined by an 

 angle. Alt. 28-39, diam. 34-42 mill. 



Calijornian Coast. 



Trochus montereyi Kiener, Species, gen. Trochus, t. 33, f. 1, la. 

 —Fischer, Coq. Viv., p. 104, t. 33, f. 1. 



