16 
143 Muricidea incisa Brod 
Rare, occasionally found near low-water mark. 
144 Pteronotus festivus Hinds 
Abundant at False bay, La Playa, and Todos Santos bay, 
among small, angular boulders. 
145 Ocinebra subangulata Stearns 
A live individual washed ashore on a piece of kelp, found on 
the ocean side of the San Diego peninsula, is now in the collection 
of the Phil. Acad. Sci. 
Synonym of Muricidea subangulata. 
146 Ocinebra interfossa Cpr. 
Under rocks partially imbedded in shell sand, rocky beaches, 
at San Diego. Santa Barbara (Yates). Vancouver Isl. 
147 Ocinebra gracillima Stearns 
“Shell small, solid, fusiform, slender; spire subacute; whorls 
6-7; body whorl about two-thirds the whole length. Upper part 
of whorls subangulate, aperture about as long as the spire. Outer 
lip thickened internally; white, with 4 prominent denticles. Col- 
umellar lip excavated, callous, with a purplish stain showing 
through the enamel. Canal moderate, closed. Surface smooth, 
with numerous fine whitish revolving costae, dotted with brown, 
the interspaces near the outer lip with brown linear markings. 
Upper whorls longitudinally nodosely ribbed. General color oliv- 
aceous, with patches of yellow. Lon. .5; Lat. .25 in. Habitat— 
San Diego, California, 10 fms.: Hemphill.’’—Robert E. C. Stearns, 
Conchological memoranda, No. 6 (May 18, 1871); “Am J Conch 
7:—(1871) with f.’’ 
Under stones, San Diego. 
“A few at Point Fermin,’’ near San Pedro, California, fide 
Mrs. Williamson (U S Nat. mus pr 15:215).~ - 
148 Ocinebra interlirata Stearns 
San Diego. Rare. 
149 Ocinebra poulsonii Nutt 
Equally abundant and in similar situations with Pteronotus 
ip ag Hds. Also at Todos Santos bay. Santa Barbara. Cerros 
sl. 
150 Purpura saxicola Val 
Abundant on a rocky beach just south of the boundary line, 
but not noticed on other ocean beaches either at San Diego or All 
Saints bay. Monterey. 
151 Monoceros Iugubre Sby 
Abundant at Todos Santos bay and north to near the United 
States line. Light-colored individuals were found of a shade of 
yellow ochre, merging to white. 
152 Monoceros engonatum Conr 
Abundant on exposed shingle beaches, Balenas bay to Todos 
Santos bay. . 
153 Monoceros pauciliratum Stearns 
“Shell moderately elevated, whorls 4-6; hedv whorl four-fifths 
the total length; angulated above and excavated between the angle 
and the suture; a sharp groove behind the tooth. Upper whorls 
