CLASS GASTROPODA 
19 
Tritonalia fusconotata Dali, 1919 
Proceedings of the United States National Museum, 56:333. 
Shell solid, light yellow-brown, with spiral bands of dark brown spots 
between the ribs, usually one at the periphery and another at each end of 
the whorl, but sometimes missing; whorls four or five exclusive of the 
(lost) nucleus, rather inflated; suture distinct, constricted, the whorl in 
front of it appressed and gathered into short, minute, vertical wrinkles; 
axial sculpture otherwise of six or seven prominent vertical ribs extending 
across the whorls and rather sharp elevated incremental lines; spiral sculp¬ 
ture of (on the last whorl, about 24) subequal spiral cords with narrower 
channeled interspaces, covering the whorl; aperture rather wide, white; 
outer lip somewhat expanded, internally denticulate; body and pillar 
erased; canal short, closed in the adult, with a marked siphonal fasciole. 
Height of shell, 26; of last whorl, 20; diameter, 15 mm. (Dali.) 
Type in United States National Museum, No. 46729. Type locality, 
Monterey, California. 
Range. Monterey to Catalina Island, California. 
Tritonalia poulsoni Carpenter, 1865 
Journal de Conchyliologie, series 3, 5: 148. Tryon, Manual of Conchology, 1: PI. 38, 
fig. 475. 
O. t. turrita, solida, lueto-albida, rufo-sanguineo spiraliter lineata; ver- 
tice nucleoso parvo, laevi, parum tumente; t. juniore rhomboidea, haud 
varicosa, spira planata, peripheria subangulata, canali recta, longiore, labro 
intus dentato labio distincto, subcalloso; t. adulta, anfr. 7 primis planatis, 
posticis tumidis; suturis planatis, sedarea postica concava; costis subvari- 
cosis crebris, lumentibus, irregularibus, anfractu ultimo 7, circiter quinquies 
subnodosis; tota superficie spiraliter crebre insculpta; sulcis punctatis, 
rufo-sanguineis; apertura ovali; labro acutiore, dorsaliter tumido, varicoso, 
intus dentibus validis circiter 6 munito; labio solido, sub suturam dente 
valido parietali munito, super columellam calloso; canali breviore, aperto. 
Long., 1.85; long, spir., .96; lat., .93 poll. (Carpenter.) 
Shell of medium size, elongate-fusiform; spire elevated, compact; 
whorls six, deeply concave above, convex below, with rounded transverse 
ridges rising to prominent nodes on the angle of lower part of whorl; 
nuclear whorls coarsely cancellated; ridges obsolete on concave portion of 
whorl; more or less prominent spiral ridges on lower portion of whorl; 
spiral sculpture faint on the concave surface; fine incremental lines quite 
prominent; suture not deeply appressed, wavy; aperture semi-elliptical; 
outer lip denticulated; inner lip effuse, incrusted, smooth; canal short, 
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