206 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
num, infundibuliformem, vix angulatum, saepe tumidore, medio obtuse 
impressa; apertura subquadrata, parum declivi; columella subarcuata. 
Long., .16; long, spir., .07; lat., .16; div., 70°. (Carpenter.) 
Shell small, subelevate, rather solid; pale with young shell ornamented 
with narrow very frequent tawny-purplish bands, with adult shell also 
nebulous with large spots; with five subquadrate whorls; girdled with 
obtuse median lirae and subobsolete striae, with strongly impressed sutures ; 
with rotund basis, obtusely angulated, ornamented often with evanescent 
spirals, adult shell often more swollen around the large infundibuliform 
umbilicus; aperture subquadrate, little sloping; columella subarcuate. 
(Translation.) 
Type in United States National Museum. Type locality, Neah Bay, 
Washington. 
Range. Sitka, Alaska, to San Diego, California. 
Described as Gibbula succinta Carpenter. 
Margarites lacunata Carpenter, 1864 
Supplementary Report, British Association for the Advancement of Science, 653. 
Annals and Magazine of Natural History, ser. 3, 14:425. 
Very small, nearly smooth; umbilicus hemmed-in by swelling of colu¬ 
mella. (Carpenter.) 
G. testa parva, fusco-purpurea, solidiore; marginibus spirae valde ex- 
curvatis; anfractibus nucleosis normalibus, postea iv. subplanatis, suturis 
distinctis, apice mamillato; sublaevi, circa basin vix angulatam striolata, 
striolis spiralibus distantibus; apertura suborbiculari, parum declivi; labio 
juxta umbilicum constrictum, quasi lacunatum, lobato; columella callositate 
parva umbilicum constringente. Long., .11; long, spir., .05; lat., .11; div., 
80°. (Carpenter.) 
Shell small, tawny purplish, rather solid ; with margins of spire strongly 
excurved; with nuclear whorls normal, afterward four in number sub- 
planate, with distinct sutures; apex mammillate, rather smooth, striate 
around the scarcely angulate base, with distinct spiral striae; with aperture 
suborbicular, little sloping; with inner lip lobate next to the constricted and 
somewhat hollowed-out umbilicus; columella with small callosity constrict¬ 
ing the umbilicus. (Translation.) 
Type in United States National Museum. Type locality, Neah Bay, 
Washington. 
Range. Neah Bay, Washington, to San Diego, California. 
Described as Gibbula lacunata. 
[8081 
