CLASS GASTROPODA 
223 
rowly channeled suture and moderately rounded whorls; spiral sculpture 
of narrow, equal, flat threads (about three to a millimeter) with very 
narrow interspaces over the whole shell, though the interspaces are a 
little wider on the apical whorls and the spirals underrun there by thread¬ 
like axial sculpture, giving a somewhat punctate appearance under mag¬ 
nification; aperture elongate, rather narrow, the outer lip thickened, not 
reflected, with traces of liration near the inside margin; the body and 
pillar with a continuous layer of enamel; canal short, wide, with no 
siphonal fasciole. Height of shell, 37; of last whorl, 25; diameter, 
15 mm. (Dali.) 
Type in United States National Museum, No. 205212. Type locality, 
United States Bureau of Fisheries Station 5053, Suruga Gulf, Japan. 
Range. Straits of Juan de Fuca to San Diego, California; northern 
Japan. 
Colus conulus Aurivillius, 1885 
Vega Expeditionens Vetenskapliga lakttagelser , 4: 354; PI. 13, fig. 6. 
Skal nastan jemnt koniskt, suturer grunda, vinlingar mycket plattade, 
nagot insankta i havarandra, med fina spiral-ribbor pa ett afstand fran 
havarandra af 2-3 ganger ribbornas egen bredd; narmast munkanten 
korsas de af skarpare tillvaxtstrior. Columella visar pa ett ex. en skarp 
kant. Operculum paronformadt med terminal nucleus. Epidermis gul- 
gron (2 ex.) eller olivgron (ett tredje) ; svalg och columella brungula, 
don senara med hvita band och flacker, munkanten innantill hvit och 
slat, ej bla med ribbor sasom hos Euthria viridula, med hvars “var. 
fasciata” Dunker (Moll. Jap., tab. 3, fig. 5. och 6) den visar formlikhet. 
(Aurivillius.) 
Shell almost evenly conical, sutures shallow, whorls very flattened, 
somewhat sunk into each other, with fine spiral ribs at a distance from 
each other of two to three times the rib's own width, nearest the aperture 
they are crossed by sharper growth lines. Columella shows on one 
specimen a sharp edge. Operculum pear-shaped with terminal nucleus. 
Epidermis yellowish-green on two specimens and olive-green on a third 
specimen. Throat and columella are brownish-yellow; the latter with 
white lines and spots, the edge of the aperture is white and smooth, not 
blue with striations as Euthria viridula to whose var. Fasciata Dunker 
(Moll. Jap., tab. 3, fig. 5 and 6) this form shows wavy form likenesses. 
(Translation.) 
Type in Zoology Museum, Copenhagen? Type locality not known to 
writer. 
Range. Arctic Ocean north of Bering Strait; circumboreal. 
[ 223 1 
