CLASS GASTROPODA 
129 
tooth-like dentations. Inner lip with four or five crenulations on the 
columella. Coloration livid purple with a single white band on the middle 
of the last whorl, which appears just above the suture on the next whorl. 
Long., .25; lat., .11 in. (Dali.) 
Type in United States National Museum, No. 4084. Type locality, 
Cape San Lucas, Lower California. 
Range. San Miguel Island, Long Beach, to Laguna Beach to Cape 
San Lucas, Lower California. 
Philbertia rava Hinds, 1843 
Proceedings, Zoological Society of London, 39. Zoology of the Voyage of H.MS. 
Sulphur; PI. 5, fig. 18, 1884. 
Testa ovata, acuminata; anfractibus octonis, rotundatis, costulatis, 
transversim striatis; costulis rotundatis, suturam incurrentibus; infra 
suturam purpureo spiraliter fasciata, anfractu ultimo iterata; labro intus 
crenulato; aperturo ovali; canali brevi. Axis 5 lin. (Hinds.) 
Fulvus, the interstices of the ribs and edge of the lip stained purple- 
red; sinus wide and deep. Length, 12 mm. (Tryon, Manual of Con- 
chology .) 
Type in Cuming Museum. Type locality, Gulf of Nicoya, Central 
America. 
Range. Laguna Beach, California, to Gulf of California. 
Philbertia crystallina Gabb, 1865 
Plate 3, fig. 5 
Proceedings of the California Academy of Sciences, 3:184. 
Shell small, fusiform; nuclear whorls two, smooth, normal whorls four 
obliquely truncated above, angulated, below the angle somewhat convex; 
surface marked by numerous small revolving ribs, except on the middle 
of the whorls, where they are larger, more distant and ornamented by 
small nodes; aperture rather broad; inner lip slightly encrusted; outer 
lip thickened behind, subacute on the margin, posterior sinus moderately 
deep, round and with a polished and thickened margin, placed close to 
the suture; canal very slightly twisted; color a pure white, polished. 
Long., .35; lat., .13; long, aper., .16 in. (Gabb.) 
Type in State Geological Survey, Mollusca, No. 1052. Type locality, 
Catalina Island in 40 fathoms. 
Range. Known only from type locality. 
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