40 
lated above and white within; the outer lip with 5 or 6 tuberc'es 
internally; canal moderately pro'onged, slightly curved and 
open in the two specimens before me. Dimensions of largest: 
Long. .89; lat, .41 inch. Habitat—San Miguel Island, off the 
southern coast of California, where the specimens from which 
this description is made were obtained by Mr. W. G, W. Har- 
ford.” —Robert E. C. Stearns, Ca ac pr 5 :—t1, f 4 (7 Ap 1873). 
PLEUROTOMA MONTEREYENSIS. 
“(Dritlia) Shell small, rather solid, elongate, s'ender: spire 
elevated, subacute; whor!s, 7-8 moderately rounded; upper 
portion 2f larger volutions somewhat concavely angulated; 
suture distinct; color, dark purplish brown or b‘ack, surface 
covered with rather coarse, inconspicuous, revolving costae, in- 
terrupted on the body whcri by rude incrementa! lines; middie 
of upper whor's and upper part of body whorl disp'aying 14-15 
equidistant, longitudinal, nodose, slightly oblique ribs, which 
are whitish in the specimen before me (being soinewhat rtbbed 
on the larger whorls); on the smailer volutions of the snire a 
puckering at and following the suture suggests a second indis- 
tinct series of nodules; aperture less than half the length of the 
shell; canal short: terminal portion of columella whitish, slightly 
twisted; posterior sinus, rather broad rounded, and of moderate 
depth. Mean divergence ebout 26 degrees, Long. .67 in.; Lat. 
24in. Habitat 
Monterey, California, where the single spec- 
imen in my cabinet was collected by Mr. Harford and myse‘t im 
March, :868. ‘This shell, in its general aspect, resen ables the 
sombre colered specimens of the Gulf of California and Pana- 
ma.’’—Rohert E. C. Stearns, Concho!logical memoranda No. 7 
(28 Ag 1871); Ca ac pr 5:—t1f2(7 Ap 1873). 
ANCYLUS ? ' 
Many things in this world are unseen because unsougit. 
While recently camped, one April day, beside the banks of the’ 
