240 SURCULA. 
canaliculate, the outer lip sigmoid ; light reddish brown, under an 
olivaceous epidermis, with a central broad white band, having ill- 
defined edges; columella and extremities of the shell also white. 
L. 38, diam. 11 mill. 
Catalina Isl., Cal.; Straits of Fuca. 
S. vinosa, Dall. 
Sinistral, shorter and much less slender than the preceding 
species, with a shorter canal and proportionally tnuch larger 
aperture, finely spirally striate; uniform deep wine-brown or 
claret-color. 
Aleutian Islands. 
S. SINISTRALIS, Petit. Pl. 13, fig. 64. 
Sinistral; ash-brown; lightly decussately striated ; sinus broad ; 
canal short. Length, 20 mill. 
W. Coast of Africa (Petit). 
S. PLUTEATA, Reeve. PI. 6, fig. 78; Pl. 30, fig. 82. 
Shell narrowly fusiform, with elevated, acuminated spire and 
long, narrow, twisted canal; whorls with a shelf below the 
sutures, and a central revolving carina of small nodules; horn- 
color, the nodules white; sinus rather shallow and wide. 
L. 30, diam. 7 mill. 
Whydah, W. Africa. 
Described by Reeve without locality, but I have the same 
species before me, received from the Liverpool Museum, with 
the above habitat, with the MS. name P. mandarina, Smith. 
S. ANNULATA, Reeve. PI. 6, fig. 83. 
Shell solid, with elongated spire and well-formed but rather 
short canal; whorls cingulated throughout. L. 48, diam. 15 mill. 
Habitat 2 
S. caTENA, Reeve. PI. 6, fig. 84. 
Shell narrow, elongately fusiform, spire turreted, yellowish 
gray ; whorls very convex in the middle as if suddenly swollen, 
and bearing a row of oblique, white tubercles; lip thin, sinus 
broad ; canal long and straight. lL. 58, diam. 15 mill. 
Habitat unknown. 
With short canal. 
S. astricTa, Reeve. PI. 6, figs, 85, 86a; Pl. 32, fig. 36. 
Spire often truncate, the tip acuminate when present, whorls 
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