72 CANCELLARIA. 



Var. H^EMASTOMA, Sowb. Figs. 37, 39. 



Rudely angled above, with regular distant thick rounded ribs, 

 decussated by spiral ridges ; yellowish white, blotched and 

 banded with chestnut ; columella and margin of aperture 

 orange-red. Length, 1-1-25 inches. 



Galapagos Is. (sandy, 10-16 fms.), Cuming. 



The ribs are smaller and more distant tlnn in the typical 

 shell. Some specimens are entirely white. 



C. RUGOSA, Lam. PL 3, fig. 40. 



Solid, imperforate, whorls obtusely angled above ; distantly 

 ribbed, and spirally ridged; pale straw-color or whitish, tinged 

 with light chestnut, especially on the shoulder, and sometimes 

 chestnut-banded ; columella spreading, white. 



Length, -75-1 inch. 



West Indies. 



The locality "China," given by Reeve and others, is erroneous. 



C. UNALASHKENSTS, Dall. PL 3, fig. 41. 



Whorls 6, somewhat turreted, with strong revolving ridges, 

 decussated on the spire, and upper portion of the body-whorl 

 by longitudinal riblets, the intersections of the riblets and 

 ridges nodulous ; white, with traces of a nut-brown epidermis. 



Length, '75 inch. 



Unalashka, Aleutian Is. (30-60 fins., stony mud). 



C. CIRCUMCINCTA, Ball. PL 3, fig. 42. 



Whorls 6, thin and delicate, slightly shouldered, crossed by 

 very faint irregular longitudinal riblets, most evident on the 

 apical whorls, and evanescent on the body-whorl, sculptured 

 with strong revolving ridges, slightly granulated on the upper 

 whorls ; outer lip thin and delicate, the sculpture of the exterior 

 showing through ; columella with two or three very faint plicae ; 

 rose-pink, strongest on the ridges. Length, -82 inch. 



Popoff Strait, Shumagin Islands (10 fms., stony mud). 



Perhaps would be better referred to the S. G. Admete. 



C. TURRITA, Sowb. PL 3, fig. 43. 



Slightly shouldered ; columella with three small folds ; flesh- 

 color. Length, 28 mill. 



Habitat unknown. 



