HELIX. 1 1 



HELIX DEVIA, GOULD. 



Testa orbiculatodepressa, oblique striata, dilute fusco-cornea, 

 umbilieo modieo canaliculate perforate ; spira anfractibus sex con- 

 vex!.*, ultimo ad peripheriam rotundato; apertura transversa, 

 oblique lunata, ad anfractum penultimum unidentata, dente tri- 

 gono ; labro albo, late reflex o, ad basim horizontal!, umbilicum 

 aliquanto ambiente. 



SYNONYMS AND REFERENCES. 



H. devia, GOULD; Proc. Bost. Soc. Nat. Hist. II. 165. Aug. 1846; 



Mollusca of the Exploring Expedition, p. 69, fig. 74. 

 PFEIFFER, Monog. Helic. I. 383. 

 H. Baskervillei, PFEIF., Proc. Zool. Soc. 1849'. 

 KEEVE, Conch. Icon, fig. 684. 



SHELL solid, depressed globose, pale yellowish horn 

 color, or brown, with fine lines of growth. Whorls six, 

 convex, suture well defined. Beneath slightly convex, 

 and perforated by a moderate-sized umbilicus, which 

 appears to have an obtuse channel revolving on the 

 whorls within it. Periphery rounded. Aperture trans- 

 verse, obliquely lunate ; lip white, or sometimes rufous, 

 rather broadly reflected, horizontal at base, the inner 

 edge dilated into an elongated, lamellar, white process, 

 and abruptly turning up to form a short columella, where 

 it dilates, and partly surrounds the umbilicus. Near the 

 upper margin, and ( on the penultimate whorl, is a white 

 trigonal tooth. 



Diarn. f inch ; axis, ^ of an inch. Found at Puget's 

 Sound, and in Oregon. 



