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CONTRIBUTIONS TO A
BIOLOGICAL SURVEY OF
SANTA MONICA BAY, CALIFORNIA
by
Olga Hartman
A Final Report
submitted to
Hyperion Engineers, Inc.
by .
The Geology Department
University of Southern California
September 17, 1956
A
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TABLE OF CONTENTS
—=
Page.
Introduction----.—-...-...8 SO SSS OBS SOS SESE GHAR ie 1
Reser ptd On Ob Ar eda an—n amine meee ea oe eee eee 2
Methods and Equapmnent--——-s-secenucensseoeeeee eee aug
RanmatwAti tnt G1 CS mee aoa mow meee we Oe eee 11
Ecological------~~------~~.-.-----~--~ ee 11
Geographical -~---~-~--~-~.~- ~~~. 5 ee 15
Patchiness----~--------~-~-~~-. ~~~ ~~~ ee 20
Systematic Classification of Faunal Units--------.-.. 23
EegloctcatiClassificatiOn=c-——-sseecese asso eee ee eee 26
Imdiic ater pS pe Ciie@Seq———— nce e neem eee e eee een ee eeeeeee 37
Results of Some Other Biological Observations-------- 40
Comparative Food) Valueseo——-———o00-omewmnoeeeeeeeen ee - 43
Size of Largest Species---------~---~-~-----.-.~-----.. 44
Acknowledgements ~----.- 2-2 ~<a eee cena 45
Eienavunen Cited nama saaaa sooo s eon aoe e ere) See eee - 46
Appendix Ie-------~------..--..- oe ewww wenn nce een nee 47
Appendix II-----.--------~--~~--.~--~.-.---.-.-------- ~ 57
Append tac Tn ene one ne meee ee sen een ea cennceeee 60
Appendix IV--....-.- ene owe eee ween een nnn 67
Appendix Ve cn<.o onc coco cn cece eemn ee SOCCSSES eemennene 136
Appendix VI----------~.---~.----~--~~------------- --=- 138
Appendix \Vilw—-. oo eee eo eee oe See eee nem ee == 140
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CONTRIBUTIONS TO A BIOLOGICAL SURVEY
OF SANTA MONICA BAY, CALIFORNIA
Introduction
The purpose of this report is to record the results
of bottom sampling in Santa Monica Bay between 1952 and
1956, and to evaluate the analyses of these samples in
terms of organic productivity by systematic faunal units.
The analyses are believed to approximate the ecological
associations of animal populations as they exist in
nature. Values of comparative biomasses are expressed
in terms of varying horizontal and vertical distances
from the effluent outlets. The major faunal units are
identified and their affinities noted with those of
adjacent and more distant areas. In Santa Monica Bay,
six biological zones are recognized. Each supports a
characteristic fauna differing primarily for depth of
sea-floor, nature of sediments, and varying with distance
from the ends of effluent pipes. The more abundant or
conspicuous faunal categories are named for each zone,
resulting in about 500 specific entities.
About 150 measured bottom samples were taken from
selected parts of the bay. They are in the range of
stations numbered 2148-52 to 4451-56, made by the VELERO
IV. Most samples were quantitative and taken with a
2 1/2 cubic foot orange peel grab. Others were taken
with a larger (5-6 cubic foot) Campbell grab, a biological
\ “ae
2) te (3)
Es ig’
dredge, a beam trawl, and baited lobster traps. A few
animals were snagged on hydrographic lines. The quanti-
tative samples differed in volume from a fraction to
five cubic feet, or 1.67 cubic meters. These variations
were mainly because of differences in depths and kinds
of sediments, with the greatest variations being from
shallow hard-packed bottoms.
The concentration of samples from shallow areas in
the vicinity of the Hyperion outfall, and along the shelf
bordering the upper end of Santa Monica Canyon, was to
more intensively study patchiness and present conditions
along paths that a series of new outfall lines may occupy.
Description of the Area
The benthos of Santa Monica Bay is a northward
continuation of the San Pedro area and shares many of
its biological characteristics. Both embayments have
a similar shallower (to 300 feet) and deeper (to 1500 feet)
shelf, a slope (to 2250 feet or more ), and a deep or
subsill basin (to 2940 feet). The faunal groups consist
of similar categories, and differ mainly in the numbers
of their occurrence because of physical differences.
The San Pedro area is traversed by a channel through
which a strong current flows and its bottoms, therefore,
Support some associations which are sparse or not rep-
resented in Santa Monica Bay. The presence of submerged
mountains (the Lasuen Seamount and Six-Mile Bank at either
oe
Sanek * mr Mah
oo
oN { ee 4h Wee iit’
‘ Ye tng
Gr, sy We Si pe
Te ge f Lay
5
yy ae pea ety Vite 14 tt i Pill a ’
bs ii ite t sich a uy
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basinal
side of its southern sill, and two similar mounts at
either end of the northern sill) account for some gross
differences. Its sediments are more diversified and have
many rubbly slopes. In their deeper parts these slopes
have associations of glass sponge which are sparse or
lacking in Santa Monica Bay except in scattered patches
along the outer slopes of Santa Monica Canyon, The
shallower submerged slopes, continuous with the Palos
Verdes Hills, have an unusually diversified and abundant
benthonic fauna which in amount is unparalleled in any
other area of southern California, Although the specific
categories occur in other regions where currents prevail,
their quantities are much diminished,
The sea floor of Santa Monica Bay is divisible into
six faunal zones, numbered I to VI (May 7, 1956 report,
p. 13), Zone I refers to the broad, shallow shelf
‘extending west from Hyperion; II refers to the shallow
triangular area between Redondo and Palos Verdes Hills,
and west to the outer end of Redondo Canyon; III refers
to the northern shelf of Santa Monica Bay to depths of
330 fathoms; IV refers to Santa Monica Canyon, and V
refers to Redondo Canyon. In Figure 1 is shown their
locations and the serial arabic numbers for zones III,
IV, and V. Those for zone I are more completely detailed
in Figure 2,
The shallower bottoms of Santa Monica Bay are populated
mainly by animals existing within the sediments which
- 7 1 . ay
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HIM wD is
Bil bene esa ty PERG A als th ge yis§
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COR he aahiy OT
Pigure 1. Santa Monica Bay showing Zones I to VI, and
sample numbers from Zones III, IV and V.
Sy
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ay!
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Figure 2, Chart of Zone I showing sectors W (west),
SW (southwest), and NW (northwest) with
sample numbers for each,
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‘Transects from End of Hyperion.
°
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SANTA MONICA BAY.
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are muddy, sandy, or mixed. The sea floor appears smooth
and nearly barren (Figure 3), but the presence of in-
numerable small hillocks, holes, and other irregularities
verify the existence of an abundant fauna which consists
mainly of different kinds of smaller metazoan animals.
An occasional five-rayed shallow depression is made by
an Astropecten, and the slender erect sticklike projections
are tubes of phoronids, onuphids, or the stiff stipe of a
sea whip.
Animal associations of rocky or gravelly areas are
limited mainly to the upper slopes of Santa Monica Canyon,
as in the outer regions of Zone I. Macrokelps, which
require shallow rocky surfaces for attachment of the
stipe, are mainly restricted to the northern areas of
Santa Monica Bay. A small triangular area (Zone II)
between the upper end of Redondo Canyon and the Palos
Verdes Hillis, supports a diversity of kinds of animals
in unusual concentrations. The broad sandy shelf and
Slopes of the western and northwestern end of Zone I
have concentrations of brittle stars requiring quiet
water. The bottom of Redondo Canyon below 300 feet
(Zone V) is overlain by muddy sediments which support
unique associations of animals having their greatest
known concentrations in this place. The fauna of Santa
Monica Canyon, below 300 feet (Zone IV) resembles that
of Zone V, but is more limited and dispersed. Analyses
of samples from these bottoms are given in the Appendix.
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at
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a a A isonnwe tos é atamaibae pli: we ibis ekee vt cv
i LL Lt Yl siodh pales, ‘yaaa hy abBEREIS i
Le wren’ e aga ant ‘heodla oni eh Bhd j
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Figure 3.
Photograph of a silty sand sea floor about
4 1/2 miles from the end of Hyperion outfall
in 160 to 200 feet of water. Typical animals
in the sediments are Astropecten californicus,
Onuphis nebulosa, a slender sea whip, Glycera,
Nephtys, maldanids and smaller pelecypods. The
base line represents about two feet. Photo
taken by Dr. R. B. Tibby, July 1955.
elaniga: Laak:
ee A ate
Hay 7 iy j
reeks
é
y
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Perey
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4
a
The broad flat shelf extending west from Hyperion
to the upper end of Santa Monica Canyon (Zone I) comprises
85 to 90 square miles, It can be divided into faunal
areas expressed in terms of distance from the outfall.
Six faunal groups are named, each with west (I W), south-
west (I SW), and northwest (I NW) sectors. The boundaries
as noted in the report of May 7, 1956 are retained except
that the outer fringe of the Limited-Enriched-Fauna in
I W has been moved west about a fifth of a mile to encompass
all of the stations in the I W-12 sector (Figure 2). This
fauna, as well as the adjacent Unlimited-Diminished-
Fauna, have been more completely sampled since the last
report was issued.
Methods and Equipment
The samples taken with the Hayward orange peel grab
were screened on board ship through sieves of which the
finest measured 24 meshes to the inch, bottled in suitable
containers, and fixed with formalin added to seawater,
As soon as possible thereafter the samples were trans-
ported to the laboratory where cleaning and analyses
were done (Hartman, 1955). Because of these collecting
methods, many smaller metazoan animals (especially smaller
crustaceans, worms, mollusks and others) were undoubtedly
lost. However, the counts of animals were high in spite
of such unmeasurable losses and the species are believed
to be characteristic of the areas investigated.
; my 49 i ‘mat
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ae
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hay hie Dd ohh ne
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The grab was usually filled when soft fine-grained
bottoms were sampled. In rocky bottoms it was less suc-
cessful, so either a biological dredge or a trawl was
used to obtain qualitative measures, Volumes of indivi-
dual grabs varied most in shallow water where sediments
were hard packed. Thus, differences from nearby stations
varied as much as 300%, For example, in sector I W-12c
at station 4325 with a medium to coarse green glauconite
sand bottom, 1.88 cubic foot was recovered, and in
I W-19a at station 4329 in silt and sand, 0.06 cubic
foot was recovered.
Baited lobster traps were used in the vicinity of
the outfall to lure foraging animals not easily taken
by other means. At first, traps with copper and brass
fittings were lowered and found unsuccessful, perhaps
because of repellant metallic ions leached into the
seawater. Another time the entrance of the trap had
been clogged by a crab too large to enter or escape,
so that the entrance of other kinds of animals was impeded.
Other traps recovered various foraging animals such as
crabs, flounders, and snails, and smaller associated
animals,
Beam-trawl fishing (Zone II-5) was incidental except
for the catch of certain kinds of fishes from water over
a shallow sandy bottom.
Some human factors are probably reflected in the
sorting and analyses of the samples, which were done
10
by the writer. As the work progressed, it was obvious
that an increasing number of kinds of animals were being
recognized, partly because many animal species lie in
tubes or burrows made by other kinds, or are covered with
debris, or occupy various sheltered nooks not easily
seen, (Analyses were usually made with the aid of a
dissecting microscope.) Such was the case with many
small tubicolous animals, Monobrachium, a commensal
hydroid on small bivalves, an unknown flabelligeriid
found in considerable numbers in dead shells of Cadulus
(tooth shell), commensal and parasitic animals associated
with host species, and other kinds. In time, therefore,
it may be necessary to review all of the earlier samples.
This can still be done since most have been preserved.
Fortunately, experiences Paninied from SHEE OE studies
in the San Pedro area, where many animals are the same,
made the recognition of most species simpler.
Emphasis on the importance of annelids from the
start might have beefi due to interests on the part of the
investigator. However, it is believed that this group
will loom the largest in mass productivity and diversity
to anyone who will examine the samples, and that they,
together with the ophiuroids and the smaller though poorly
known entomostracans, are the most important constituents
in the bottoms investigated.
i
aonb oh n a
we -saptaoiae, Aeitaar ‘ot 4 Hee ih ‘
ea ih Bi ogbavenaena need ovat, 1200) jah he
, ee aauine ost fli 4
“as at ie neg sit 10 spans of sn Bowed) 5
11
Faunal Affinities
Ecological
The benthonic fauna in Santa Monica Bay has its
closest affinities with that in the adjacent San Pedro
area, The kinds and numbers of species are somewhat
higher in the San Pedro embayment because of its greater
diversity of physical features. It also supports many
species requiring currents, such as the large associations
of Chaetopterus (polychaete), Ophiothrix (brittle star),
and gorgonian corals which flourish in abundance near
Whites Point; the large beds of Tagelus ( jack-knife
clam) just outside the Los Angeles breakwater, and the
siliceous sponge associations along the steep slopes
of submerged mountains. These, and other kinds, are
Sparse to absent in the Santa Monica area. Undersea
gardens of macrokelps with their rich associations of
animals both in the protecting canopy above and in the
sediments below, which abound in great numbers along the
leeward shores of Santa Catalina Island, are present
near Malibu in Santa Monica Bay, but much less extensive.
The outer basins (Catalina, Santa Cruz, San Clemente,
and others) off southern California have been found
(Hartman, unpublished) to have many different kinds of
animals not present in the near shore basins (San Pedro
and Santa Monica). The densities in the outer basins
(mass productivities) are, however, much lower except in
places where nutrients are supplied from outside sources
qeneeg. Ray ra ohadond ‘prsmyarion oabst wd td ; 4
Sy i Yaa et aden beta u “ane ba9havds ie vw a
. amakta banger aytel oat, #5 fibre atawetua bak rhupas .
isate sbstiaa) Ais ste bat) Catan ty aw) gerotg0i4
in
‘ae ta9n gowbbivde nh ota tama Ho dn kitw alexoe deinoyre
| Pa | 7 fe
i ne : a imk-tost) + seas io Ae ara ie a! >!
. i
nA
ee
4 Yasmang err iSnntek auttdsas asta 1 Ipotoits
sevietetne taal Hest i al boson ‘wtaet kt ud
a)
(shim £9 nae peter atane atta Yad) en inon x9.
tanita awed ove ‘pas FE te Creer a8
to er tnx TED nate vad: oh ae ae "
oe y
eshet nak ‘embees, te, neon dt nb Be sede, ae
12
(as at Catalina Harbor on the outer side of Santa Catalina
Island). The absence from, or sparsity in, the inner
basins suggest that the species have different temperature
requirements, either as larvae or adults,-.or that there
are competitive factors which may be selective.
The most abundant animals in the shallower bottoms
of Santa Monica Bay are various kinds of polychaetes,
smaller crustaceans (entomostracans) and ophiuroids.
Others which may be present in abundance at scattered
places are various types of mollusks, sipunculids,
echiuroids, a stalked brachiopod, nemerteans, and other
animals, most of which lie partly or wholly buried in the
sediments.
Those in shallower depths are small in size, exceedingly
numerous, and perhaps have short life spans. Those in
moderate depths tend to be larger in size, fewer in numbers,
and are more diversified, The deepest bottoms (in the
basin) are impoverished or dead,
The dominance of one or two species over extensive
areas, such as has been described from shallow bottoms
of western Europe (Danish authors), from Puget Sound
(Shelford and associates), from Long Island Sound (Sanders),
and other places, has not been observed in either the
Santa Monica or San Pedro areas. Instead, populations
exist in patterns much like a patch-work design, with
irregular or unpredictable recurrences and in various
kinds of associations A few species have been more or
| ‘al Sida eussaae eats
ie
r _eoavaagana aati unatt met enone ot es:
7 a “sabhowwiiige | bas Conant ie 7 a sh
” _ phases oh: woagbanes, aii sang oe, ho soba
. ee ee Bt or"
and fete begs Sea +bes ieoesd ‘pint his
. 7 nt oapiet . “yangae vata 2xorte ovait 4 i “a
owes at vow? (ists we a9 ad at)
ahd on) anata feeqnen + ant oe
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tlw iia kab Avene dared a te: aon yn aga
. - ‘
nokaay ‘mk - ae asangaayog? aranya .
ae arse “1
: ; on
4 A
13
less constantly associated with certain kinds of sediments.
Such are the epifaunal Chloeia pinnata (an amphinomid
annelid) and the tubicolous Pectinaria californiensis
(the cone worm) on sandy or silty bottoms and in shallow
to fairly deep water. Ampharetids (Amphicteis, Amage),
Maldane, Nothria pallida and some terebellids are associated
with soft muddy bottoms in shallow to greater depths.
Species of Glycera, Ampharete, Onuphis nebulosa,
Phyllochaetopterus prolifica with attached Scalpellum
(stalked barnacle), Pherusa capulata, Isocirrus planiceps,
and some other kinds are most frequent in mixed bottoms,
especially where coarse sand or gravel prevails. Rocky
bottoms support such attached forms as solitary coral,
Corynactis (an anemone), various attached serpulid worms,
and crevice or nestling kinds as chitons, various other
mollusks, and scale worms. Some of the rocky areas of
the upper end of Santa Monica Canyon show evidence of
former colonies of pholad mollusks, for which occupants
have not been recovered. These rocks are now inhabited
by borers of smaller dimensions such as sipunculid, a
smali clam, Saxicava arctica, a sabellid worm, Hypsicomus,
and others. In deep water, wood may be penetrated by
another boring mollusk, Xylophaga.
Near effluent outlets, the kinds of bottoms have
largely determined the kinds of animal associations.
In coarse, mixed bottoms with little or no current, as
at Hyperion, the conspicuous animal is Diopatra ornata.
amy {@ oa) i. ¥ ‘i Dy
| i OF.) bas 1A ]
} 45-4) {
aS. } tt i
eed ae mei Dati
ie are dick i ieee ai rt ha sean
tue iain te
PA
f o
i yy) 0
| epenahineyt hoa D Aeneas Ch, maine Ley
; wo Dlg a Hea anor it whee nal ee
«Mana a eka alee Oe ead
bry 8! f iy
wm
aes be
—
a
ae kis
i p ‘tae
NE tyes
scabies wrk
rien
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eh, hi pata
Bite
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14
Where currents occur, as at Whites Point, it is Chaetopterus
variopedatus with Ophiothrix spiculata. In sandy or muddy
bottoms it is Nothria elegans, and where bottoms are
mixed with gravel it may be Glycera or Nephtys species.
The most flourishing population of Diopatra ornata
has been found close inshore near Malibu Point. It is
adjacent to macrokelps on which it may depend for its
food and tube=-building materials, The densest colony
of Chaetopterus is at Whites Point, This species feeds
by secreting a mucus mesh in which it captures various
microorganisms as they are swept along with the currents.
The preponderance of a few families of animals is
noteworthy. The onuphids are well represented with
Diopatra ornata, usually in coarse sediments near shore
or near outfalls, and Nothria elegans occurs in finer
bottoms at similar levels. In deeper waters, these are
replaced by Onuphis nebulosa, QO. vexillaria, Diopatra
tridentata, or others. The maldanids, represented in
shallow waters by Praxillelila and Axiothella are replaced
in other areas by Maidane in soft bottoms, and by Isocirrus
in gravelly bottoms. Among the chaetopterids, Chaetopterus
is tolerant to effluent and requires currents; Phylio-~
chaetopterus prolifica requires mixed bottoms and thrives
in a wide range of vertical depths; Telepsavus occurs
in shallow fine sandy sediments; Mesochaetopterus is in
soft deeper bottoms, and another kind of Phyliochaetopterus
occurs in subsili depths of the basins.
Ue
ra ite ie 7 : iy 1
®t Set
a," *e”
- ane
Ma EO EC ipeeds
vain int ai he .
ok ia ory wea" vba ia eres eka:
Cane
‘-: : é gia Sk i ot
* “te aha PoeQe i snake! a uke a id 4 iain
Be a baad re dota ae
it
ae iy praowies wee ws a ‘grote. seinen
a ae eapwins We, eck rime we) &
: 2 ae Rae, BOY 0 Hee ae 2 Tomi eae eo
tae i ~ ei ih peta i Wa es ee aa sin eu eet
7 e ee REET sed bea 3 From abl sl ath uf Pegi i) fi SY
eanf* uk a doh ; ansaate Bk Anta Sab
|e ap
Sis Raat? 2
asi kG, he oh
tan
| i a is tmsky ot i i Labtae 6ae isu fea’)
ona ibis veer. o spin
pata ten Vat angalths
a ‘ mo, biawt ae atte af
98 TCL
oe a vy races nes
nO aaa
itil vei
hs iat, nae
vee tof et et mg te ath
15
Among the glycerids, Glycera americana is predominantly
present in mixed bottoms in shallow water. It gives way
to G, capitata in finer sediments and deeper water; to
G. tesselata at moderate depths, and to G, branchiopoda
at deepest levels, Other kinds of systematically-related
animals have shown similar patterns of replacement with
differences in depth and kinds of sediments. In Santa
Monica Bay, such species are in the spionid, magelonid,
cirratulid, paraonid, nephtyid, goniadid, and other family
groups.
The enteropneusts (acorn worms) are noteworthy for
their occurrence in shallow to deep areas. Members of
the Spengellidae are represented by no less than three
species, and the Ptychoderidae by one or more. Saccoglossus
of the spengellids occurs in shallow soft bottoms, and
Schizocardium (with perhaps more than one species) has
been found in depths of a few feet (in Zone II) to about
2300 feet on the Palos Verdes slope. Stereobalanus has
a Similar wide vertical range, and the ptychoderids have
been found in shallow area (Woodwick, in Hartman, 1955).
Faunal Affinities
Geographical
Santa Monica Bay belongs to the temperate east
Pacific faunal subdivision, or the Californian Province
(Ekman, 1953, pp. 151-156), which reaches north to about
42° north latitude (near Cape Mendocino, California). At
Erne Esme is doen aomaeay yok
Yate 00 ry ay es tt re oh A Boats mie ane 4300 1
64 jasaaiy nested aie jwitwsndlos cask) i
Babe AW phogddstna said xy ot be | ertitgah ats sebum lee
; -batare: oe mata ‘ 4 sony peer Yet bbnk A \ gee)
: : se 2 K 3 nw
Ad Poo Seika 4 tay Can tee cy ett 4 ran, bua ged J pore avait)
i <a ‘& Y 4 ,
a at ovet oe anaes sh hay:
2 : : a 5 a : wa : f
~ ee er : 3
7 pe fi eR ae SE as at WA Re
yy > A ish $y) =? ; 7 / ,
ip ® 3 fw =f + } 9 & he > Oe Fo ¥ “e :
<4} C2 A #3 334 -ets e PROGR ZY ve a’ pa shy oh iligases: 3) Pei
a . peer tb i
’ © q : 7 i
eT ; f ; . i ; ' Part ai c our Ni tae | ie teen t Roe ‘
. | \ 2 TOE slates to Hf) 3 shi ek Pere eciey ties > ida dosh ns r ™
i. " © aks : ; hi A se: cabs : re z ral
i, SNS a RR OA ene (eq galy ioe: Ue xe aati hk soph a3ie9
4 : % ’ 2 Mt) ; it r
HStat heath est ea vo fetaenss
me eake tae Pls i
yee: eeluc NOS i, 6 he. AO. SE NET ‘Oahtis
- i + at * 7 + J
ee
‘ Per L
" eis j as roe EG Be We, id Psi Ha
ae ie
i SE AABL AGS , Dito nt vig on f
: (Coeda at CTE Gadd ee) eee en ae
eet Souel seh cate SEN
:
MYR CHERRIES G8 eit i bee eesken Me
“pC BE OK cy mand eat iki stig hepas mm) are mibhale ‘ne
Eh,
1 F “AN Pace a . rah:
ay: RM EMEA RE RA ee
home Wes ale i tet)
1 Thay) ol i
r mI
; \ , : a
PBA oR Ama mat Pit od: bab lod. ye. Az
meh eee
al vo Faketiitig
rkyoxS eat 3 ¥¢ Lah ml de
nee
at
a hhc at da soa sane! eh dt 9k ne HAE of
fe tcl ek
ane LT
ean” . hai auotitad , ar sg Sa
nt ; ; tot! ni
)
.
my;
16
its southern range it extends to Lower California or
western Mexico. It is said to be characterized by a
southern submergence, which means that species existing
in shallow waters to the north, occur at greater depths
farther to the south (southern and Lower California),
because of gradually rising surface temperatures.
Furthermore, the endemic (native) element in the temperate
fauna of the North American Pacific Ocean is believed
to be developed to the extent that endemic species
constitute at least half of all species in the various
animal groups. These conclusions were reached from
studies based largely on hard=-shelled mollusks, echinoderms,
and fishes coming mainly from parts of central California
and northward. Applications to southern California is
therefore limited except to deeper waters, because the
surface temperatures are much higher, In the basin
systems of southern California there are perhaps barriers
of unknown quantities and kinds, and in Santa Monica
Bay there are additional variables resulting from possible
effects of pollution, It is difficult, therefore, to
find parallel studies, In the best studied groups of
metazoan invertebrates (mollusks and echinoderms) there
are many specific names, referrring to geographic locations
of southern California, which suggests that these species
are endemic to these places.
Some comparisons were made with quantitative samples
taken from shallow bottoms near Acapuico, Mexico (collected
bt “mingo lta »paeetnuge eh al
17
February 1955 by Jens Knudsen), These showed the presence
of some species identical with those in southern Calif-
ornia. Many more were lacking from one or the other area,
and still others, including the annelid genera, Aglaurides,
Chaetacanthus and Hesione, were well represented in the
south, but absent in southern California. Cerianthid
anemones were abundant and large at Acapulco, but small
or of another kind in Santa Monica Bay.
Quantitative studies made in the Puget Sound area
of Washington by Shelford and associates (1935) named
many species occurring in shallow (to 105 feet) unpolluted
level bottoms. The study was based largely on hard-
shelled mollusks, many of which do not occur in Santa
Monica Bay. A complex system of classification was
described. Some species were called biome prevalents
or predominants, others were slow moving influents. There
were characteristic species and faciations, and intere-
actions of coaction and reaction kinds. The Puget Sound
area was described with broad expanses characterized
by the dominance of one or a few kinds of species, with
clear boundaries existing from one expanse to the next.
One restricted area in East Sound, with bottoms in 60
to 105 feet, was investigated with a small Petersen
bottom sampler which took samples from a tenth of a
Square meter. The sediments were then screened through
a 0.20 mm mesh. From 14 such samples, 68 metazoan
invertebrate animals were identified (Weese, In Shelford
nkstnained paiecntin aapdtuce ni on
ace nui sont ve ‘nines oe nabowes. aici
Pith he
oy
ely
San
“pew: cng itaodtenaats 26, ‘sin rere: ee, |
aimeteverd. oo Ee) petted: ang a98 6 1 ;
“ere ‘seiaontial ‘galvon wore paaw ® od
ey aodns bat) puta as oak baw ooloone
“Ati, aekonae: “t bait mer ra ope as
tesa wit ot poinegaa 's ato, nog) iguitentca nese
iO tk emottod wee Jbavbe) gent, me eon ba
‘one A keome ig daw besagitenvad aan
‘ie io Hime vient avivnan. moet
18
pp. 316-318). Of these, 45 were various kinds of poly-
chaetes, 20 were mollusks, and 3 were echinoderms.
Allowing for changes in systematic nomenclature, about
half of the polychaete species are the same as those in
Santa Monica Bay, and the other half may be kinds limited
to more northern or colder waters. The ratio of poly-=
chaete numbers to total individuals counted, in various
depths was given as follows: 5016:5276; 36:266(a clam
bottom); 6:104 (a clam bottom); 2058:26833 84:205 (a
snail bottom); 165921993; 129421368; 45:1454 (a holothurian
bottom); 35:562 (a holothurian bottom); and 39:132 (an
echinoderm bottom). From this analysis it will be seen
that mollusks are limited to shallower, echinoderms to
deeper bottoms, and polychaetes are prominent in all
depths. Smaller crustaceans, which might have been present,
were not noted. Ophiuroids were said to be most abundant
in 90 feet.
Benthonic studies in Japan in the northwestern
Pacific (Miyadi and associates, 1940) in shallow (less
than 60 feet) nonpolluted areas, emphasized the prepon-
derance of certain groups of animals. Polychaetes and
mollusks constituted the major parts, with echinoderms
and smaller crustaceans next in numbers and all other
kinds less than 3%. Two kinds of communities were reco-
gnized, a Maldane (bambooworm) in the deeper muddy or
sandy bottoms, and a Cerithium (snail) in shallower
shelly bottoms, The Maldane was commonly associated
bas. ' #0. nagadoe to ise a vee ay.
19
with an amphipod, Ampelisca, and both the worm and the
snail communities were characterized by the presence of
mollusk genera such as Tellina, Cylichna, Philine, Dentaliun,
Nucula, Macoma, and polychaete genera such as Prionospio,
_Magelona, Giycera, Terebellides, Sternaspis, Chaetozone,
and Praxillella, all of which occur in nonpoliuted areas
of southern California.
Most of the species in the benthos of Santa Monica
Bay are believed to be endemic; that is, they have restricted,
not cosmopolitan, distributions. There are perhaps many
which are nearly related to some from similar habitats
in other temperate areas, and among the annelids these are
Capitella capitata, Maidane sarsi, Chaetopterus vario-
pedatus, Terebeilides stroemi, Sternaspis scutata,
Scalibregma inflatum, and others, It is noteworthy
that although these are not easily distinguished
morphologically from their relatives in North Atiantic
areas, they may, by detailed study, show physiological
or other differences which may have more than varietal
significance, For example, Chaetopterus variopedatus
is best known for constructing a Ueshaped tube, largely
or fully embedded in the substratum except for its distal
ends, and it usually harbors commensals of several kinds
(a small fish and polynoid). In southern California,
however, it forms dense clusters or irregularly tangled
tubes clumped together on the surface, and not embedded.
It has never been found to harbor a commensal. In most
i
»
= yscoaet
, il tk, ia i
| aa cele asic ‘
- ' 7 nd
ahaa oud =o, Sh lealle |
guint a8
my kena ea
ceva
o
by ‘i ish: ied
Se
an >
copes ena“
a ae es vaitiintisn un 9 ‘ada
1 seat ays ati |
yt rene? oe ae Fr WE Ro? ,
by Le bunt! Bi Wh le “drs audi nt mone
ve nf ts
20
cases the specific names of these genera have been avoided,
since a much more detailed study of the species is required.
Among the ophiuriods only one, Amphipholis squamata,
is regarded cosmopolitan. Among the amphipods there are
perhaps 2 or 3 species, and among the mollusks there
are believed to be very few.
Patchiness
The patterns of patchiness known in the San Pedro
area (Hartman, 1955) occur also in Santa Monica Bay,
but are less marked. A species may be abundant and
conspicuous in one sample, and rare to absent in an
adjacent one, but its recurrence can be expected in
other more distant samples. These variations might be
explained for slight changes in the character of sediments
such as size of grain, varying amounts of organic content,
differences in nutrient values of the overlying water
columns, proximity to kinds of foods, incidental dispersal
of larvae, or other indirect causes. Differences in rates
and/or times of larvae and other settling stocks which
are necessary to replenish the beds, might effectively
alter the entire facies of a population. Many smaller
species, abounding in shallow water, are known to grow
rapidly and may reach maturity within a period of a few
weeks or months. This is especially the case for many
polychaetes which are numerically and productively high
in Santa Monica Bay.
7 . ere
nena Hon’ \ ea a oe i
3 satalnabs: erie: ie
ee, ed san ahi ‘beta sors
\
hee laa ad Taek “pane ae
shea: > dwebauiss
(eve ay ansade OF ie
pt betosars nae eae
wineabisss, #
apes! a Mest =
72 ae dat Eee
eyed nod rte we te he ae ‘gus
| tetew ya tytaoya) ous to 25
7 pact “taagexenb saad ogeh iti, apheo
Me an HT ch #2: citing? ee
Ts a Hu TOse at f.
eid Bowtie tetg hii ' re a r ao iaintee, mane
4 ek ‘se Sing) (yet amma tin’: a ao notaei iets ‘pit %
4 eae ‘o4 Monts tie | eee wid Nort’ ab | nitaweiaa
ay
| ase aah ‘ena sate vida bad isa ee " 1 br scl ay
make, ; oe oe baa tA a ala is ctr
ee
21
Aside from occasional samples which have been recovered
from the bottom with pitch globules, there have been no
indications of repellent bottoms such as have been des-
cribed in British Seas (Wilson, 1953). Sediments of
_nonpolluted areas have been classed as attractive,
neutral, or repellent in their reactions to settling of
larvae. According to this theory, attractive factors
derived from organic activity, such as a coat of living
microorganisms as bacteria, can be too abundant or too
few for settling of some species. Bottoms with dead
organisms and non-living organic matter can be actually
repellent,
Where compositions of sediments appear about the
same (such as fine mud), the kinds, proportions, and
densities of animal species may vary considerably in
adjacent areas, Exception can be made to the more immediate
areas of the outfails, where differences in kinds of
associations are more accurately expressed in terms of
distance (within 1 to 3 miles) from the end of the pipe
and with kinds of sediments.
Because of patchiness in shallower bottoms, it is
difficult to repeat samples with like results, even
though they presumably come from identical bottoms.
It should be noted, however, that the associations of
species, rather than individual kinds and amounts, share
the common characteristics and can provide an index of
productivity. Beyond these shallower depths the assemblages
-
;
oe
i . .
Ks i c : . srqpallbnd oo" jsetin ast orskaa:
may rs 4 a eb aa: ait Wagapes tek songs) nae
i pee ie? yg ot Heo Es MA, abe yh Hash ieger | ern
a i x wane Bh ova ams <4! ie yids “abd, a ghigsanun |
a . punt eo fae as see oud enn hea vs aast
<r ae jms ie + maton eu ‘oe cae nat |
Mi f
ies nt re enerto® i) — dios! Ngiigh
rod
ON : ; 7 ; f Pike
‘ J, ‘ rae wry 5 oihi
Nileiton od a +: wae tbat ss Lesa ps veh, vera
Ay
TR ata hs, wets ty 4 pain Bb Ke te
yt oe pao SIH Vos i pelea Ce
mn wtiexens anon gra Sa a ving ti |
Peery wei ew iy olga “pe ern, ad ij ssi aoe A
qe ehirky ae av pawn kp sonal:
gy kg ‘end en ees ied vation vy at ‘a pins FY f
-enaiianbeg oa eh
aR) ‘panei nel, main shane re Weeicbto ten an nah
(Hove nt vas at Ane paints nies ed Ti
aren etanoma sek otha Bootes, aay, satis!
ote nenae rr Biver | two ion eed
ant jie wah miwo! fede in
‘rae
22
of organisms vary with greater horizontal distance and
reflect differences in kinds of sediments, amounts of
light intensities, decreasing temperature ranges and
perhaps other physical factors.
Diversity resulting from cyclic (seasonal or diurnal)
or from meteorological changes are believed to be insig-
nificant in Santa Monica Bay, except in the shallowest
parts where bottom temperature or salinities might differ
from one season to another, or after prolonged rainfalls.
One of the most striking phenomena of patchiness
in areas of southern California has been observed in the
accumulating evidence for unusual abundance of certain
gregarious species occurring in one, or a few, restricted
patches, perhaps not exceeding several square yards in’
extent, In Santa Monica Bay there are such beds as
Schizocardium (enteropneust) with commensal pinnixid
crabs at Zone II-6, Dentalium rectius (scaphopod) at
V-2, Thalassema sp. (echiuroid worm) at V-6 and V-7,
Pisione nr, remota (polychaete) at II-1, Glottidia
albida (brachiopod) occurs in many shallow areas in
Santa Monica Bay, but the individuals are usually small,
presumably immature, and few in number in any one sample.
Mature individuals have been found in unusual abundance
at only one place (Station 3410-55) off Palisades on the
outer side of Santa Catalina Island in 20 fathoms.
Myxicola sp. (polychaete) is sparse in most parts of
southern California, although it is to be found in shallower
i trina sobs Alin ha abil: a
a pre, rie wah aren ‘i haapaed: ae
et be oh re eae. daa eying’ k
; bidiephbo. BO deena ‘iets ats ats Lpakaie ‘raenay
- erry ih a baud th em, okgtvaalan: | woes kis “
eats a) | wapomert Lie att, Jah. aad we by, ii ee re 4
i ae | - 1vi2 Lb ‘Yglas |
oa - ay , id vied en: a ae iis ee ian eu
, | en sista i actu stig warined este: Lae
' ont pe bovepen ey “ee: ken ih on mis ” 2 imide, Be i
v kha yee te pehibii re Eaieoa | ia seenbeim ancient
e: 3 “Dispeenens yp RNR ak ire (mee ah per ac an tobe. son
¥ iv : %/ ha aby /ensuign id Laven: edie ni nee aire a
: ey -. cea vie eu re eas wasdt Sait astnoll phage 7 +
a enh ee bey ; RaeoO Ki skel Ry Aoicaeay <a een ts
RN baa Ani Ra. Coprow, tiara
i BERS
bthoie. samt ts Gch Spat wee. ee ia ve er
ae Keene wodduste shal ah ‘enone t ei rt i bbhes Me at
4! Line ebtaues ih ubwicti ay a wi et yee aint
7 ¥ . a ag any ‘aati Re i, Tapa wh wa cr Sea 14 mos bi eM
wD asters ane arti i: mish, foe fy al i raat elias
# ap t ts wobiak lai bo pabeonne aontaed yp ee La ha .
id oti’: ce tk bunt ubsena? apnad ‘oe. aye
ced bide 4, 4008 ub 9) eae hs oennent 4
23
areas where currents prevail, sometimes in Chaetopterus
beds, or in rocky shaley pockets. However, off Santa
Rosa Island (Station 3505-55) it occurs in a flourishing
aggregate of large individuals that has not been found
_ at any other locality. A conspicuous bed of Lacqueus
californicus (brachiopod) is believed to be present along
a rocky shelf off Empire Landing, on the leeward side
of Santa Catalina Island, in less than 40 fathoms, Its
occurrence in other areas is noted only as scattered
email clusters or individuals, usually with one or a few
valves of another brachiopod, Terebratalia transversa,
in rocky outcrops of similar depths. It seems possible
that these and other unique aggregations survive through
periods of years, and that they have biological properties
which encourage the settling of new stocks to insure
existence through successive generations. At any rate,
it must be assumed that there is no sparsity of larval
or settiing stocks in other more distant areas.
Systematic Classification of Faunail Units in Santa Monica Bay
Any scheme of classification must ultimately be
by systematic categories so that each species will have
a binomial name which can be recognized by other scientists.
Its place in the phylogenetic scale will then be established.
In Santa Monica Bay, as well as most of southern California,
this is a problem of the greatest magnitude because many
of the animals (including some economically important ones)
gusepee” “ty! wed Piiaptgenice A) | 1
“Bios teeny “eet 6e nddatadt “ie Goiego ido iad | M
oy + nok, brane aut vat, opel aikgral Ye. iteod,
am - : ss ‘arr wamottal On: wit nase al. hasnt, ay e902)
| “Beiprtasa! ‘eu! etn Wahod’ we ga auth. ae hiss
> ‘wot a x0 sag dba: etagen Bea
a a Amaawans ait
. ie atatanog, Binhea +E. ste valet: a 1 is ov
ie
oa “ wapiaatt os agaye: wan Ne Bak risa
rae o* ea son $A ‘aay eexaney oy eel
“ar ; havea to (2 taande oe et |
ae | er re suadabt De son ak
Seales
ai esiaoh e)nat nk eta ta aft by eh ate
Bi
‘saa ‘sistamiete ue ae saghy piniwnile a a
Va i ee f
-sbalanaise: aons9 hw brs dstynsian oe hint i pee
aDOBnitdaned #6) bused ‘Bike stn _ Oh saitane a ee ak 9
wd
pb:
Mia
te
| 4 ' : ane eigen nha
24
are still unknown,
Among the smaller crustaceans, which include about
150 species and abound in most of the shallower bottoms,
especially in the environs of outfalls or other polluted
_areas, 90% of the amphipods, 80 to 90% of the cumaceans,
and 80 to 90% of the ostracods are considered to be
unknown (Personal cummunication, Dr, J. Laurens Barnard).
These three crustacean, groups are not only highly differen-
tiated, but may have indicator value,
The worm-like animals, including the polychaetes,
echiuroids, sipunculids, nemerteans, enteropneusts,
phoronids and solenogasters, are ali well represented
in Santa Monica Bay, but are among the least known of
ali invertebrates. Thepolychaetes (segmented worms)
are represented by no less than 350 species, most of which
are poorly or not known, They occur at all depths and
in moderate to great abundance, and are associated with
sediments and other animals in predictable numbers and
kinds, The echiuroids (spoon worms) are represented by
5 to 10 species, all either unknown or recorded through
only original descriptions, Sipunculids (peanut worms)
and nemerteans (ribbon worms) are conspicuous and easily
recognized when present, but their systematic categories
remain to be determined, Enteropneusts (acorn worms)
of large size have been found to occur in significant
parts of Santa Monica Bay and at varying depths. According
to the authority of specialists, they have not been studied
he nt % siscaner oo
tdi vite x bine ae Cte )
se denny om % june iat : Syne is Ka i be aes “ :
| Kae! dw big baie perk z ny pint yen, wie
tte Ne Senn!
4
Saree bode! stnan’ aa: ida “anna
tganitt bab pose fae | svt welt . eee f jane’
Canenom: toes Pitas tinea aan it
, i faue beg. reals bead ae
wa} Louse nn | tuners ond
eater repre: rrr) inggrn9 io iff pi
Me i: va ot brie noanb hia et! 4
inde t Vag
paethan ok oes wr ay tn bona rai
HE en
25
or named, Solenogasters (worm-like mollusks) have been
found in a wide variety of bottoms and at different
depths. They are currently being studied by specialists
in Europe who have tentatively identified 10 to 20
different kinds of Chaetoderma, a Limifossor and a
neomeniid, all of which represent either new records or
unknown kinds.
Echinoderms (especially brittle stars, sea urchins,
seastars and cucumbers) are rather well known (Personal
communication, F, C, Ziesenhenne) and were found to be
represented by 58 species, The brittle stars were found
to be particularly characteristic in some parts of the
bay (see Analyses below).
Small mollusks (pelecypods and gastropods) are
present in considerable numbers where the effects of
pollution are low. Because of hard shelled parts they
are eaSily collected, but their specific determinations
are made with difficuity. Their systematic study is in
progress and when completed these groups may show sig-
nificant patterns of distribution and abundance. In the
adjacent San Pedro area, the shelled hinds comprise about
132 categories (Personal communication, Donald Wilson).
In a recent study of mollusks from the offshore islands
of southern California (Berry, 1956), 91 species were
reported from 11 to 58 fathoms, dredged from muddy and
algal bottoms. The number of individuals in single dredge
hauls ran as high as 198 for Amphissa undata (small snail),
eres
| Cae
7:
_yentitine ‘ene ake eeoeved
an
Kano agen erat roc, ipa rn
fc) ot Pew sion 4 Bend, Rnaens
“aie osou wade i
pele te fs eee aire B
oe
b vbr ws Escsing mgs) io
} mite: ae [oowa bide Ra ju ei ae te we Ne:
aeget Frage eb ‘bakt only wnat
ties el ‘bia
as ;
oo: sad if dig rey
whe CE tay! ead Degrient sarod % ee ees
waa ie
ree lak yeni’ eh, amine te :
26
105 for Acila castrensis (small clam) and 98 for Mitrella
carinata (snail). Another haul north of Anacapa Island
had no less than 59 species. The other kinds of animals
in these hauls were not named.
Illustrated faunal handbooks and keys for ready
identification of the invertebrate animals of southern
California are greatly needed in attempting a study of
many of these groups of animals. Many are stiil unknown
or unrecorded. Until these needs are supplied, studies
of other kinds will not only be discouraging, but im-
possible,
Ecological Classification of Faunal Units
A systematic classification is an expression of
genetic differences between the various faunal units
and therefore expresses progressive degrees of develop-
mental similarity or relationship. An ecological classi-
fication, on the other hand, is an expression of degrees
of social integration, of adaptational modifications and
adjustments to environmental factors, This results in
grouping organisms according to unrelated phenomena,
such as the kinds of sediments they inhabit, the character
of the food they eat, the levels of temperature or light
tolerances, and other factors of external origin.
Although ecological classification has no phylogenetic
Significance, it is valuable to recognize groups or
associations of animals, which may have indicator value,
fs
: ': it Neri ‘ “ ny
7 an a Bee y ANE.
he tere |
-e Pe ata
Bs | :
Beet BY hie tents Fy )
| ‘hart uals 8 te: aren Loa ‘eae |
suited id dip feaniae oat laskiae ie
x at det if 7 ' Neth rik ae Lahowad 0n' bathe tows |
“baie hol Cod thie hone ey, Lane mt er: th
mabatta 1. Catigiesionn shaavan ave oat) 6" are
vain a hy oie uit inion nb hetreen iron: e eel th
i . “iene ont es ba i ‘eal bg % ayes, anaett a
ee “apibie baker -_ mean eat: ret anata:
: a
7 arin heures hey aes a aa
zt
i
phseahe apie 08) ah te pa og #i
“peas ae Ronee GN ne aR er
i verbueey eee aaron oe die 93
4
a aanane aE din ang sini am BNE OD 28: om ioamae
‘eh oneal’ one 7) ‘ndint ne igaiha rma a) oma},
fuga 94: cana gina Ky blwvas word y 18D pd, oe a
i Toit i tases bssgwin or ® HOt OR,, sae ee |
ee
'
4
27
but vary with time and place, with depth, and with
geography. Once known, however, they predict not only
their living environment, but the physical and nonbiological
factors or changes with a higher degree of accuracy than
can be done with mechanical instruments, In Santa Monica
Bay these assemblages or associations of organisms have
been found not only to differ appreciably with varying
distances from the ends of the outfall, but to vary in
kind, in organic productivity, and according to the
sediments they occupy. These results are expressed more
fully in the Analyses of samples from these faunal zones,
A single association from shallow bottoms of Santa
Monica Bay may be represented by a quantitative sample
taken from a bottom area measuring two to four square
feet, in a volume of sediments measuring from one to
three cubic feet, Actually the samples have varied
considerably from these dimensions, usually in the lesser
directions, A sample may contain between 50 to 90 different
kinds of metazoan invertebrate animals, numbering from
500 to 1000 individuals, in various stages of growth
to maturity. These assemblages exist in integrated though
constantly changing patterns, and maintain inter- and
intraspecific stabilities over periods of time that may
exceed a year. Because they are believed to include
largely species with short life histories (less than
a year), there must be the constant replacement of popu-
lations by young individuals, many of which pass through
“ ay wih he se
ie oy. ten
at sai alae | ’ re
te
aniiian New
VLR ok
ce Wai
‘nfo nonanifig Mae
at HOR 5 acl i ) i
Hispana q (
F lag edly
We | ines sex
as DS
asian sino;
i ae Ga) aay
“aoua thee seth
in hg Fe ut He thane t
ee ook. ees
28
swimming or planktonic stages in the upper columns of
water.
Any factor that might affect one of the units of
such an association, such as diminished food supplies or
other unfavorable physical or chemical conditions or
disease, might effectively upset a balance which could
bring about a change in the facies of the entire asso-
ciation. Such changes have doubtless occurred in the
past, and continue to occur in Santa Monica Bay. As
evidence, there are not only the dead remains of former
inhabitants, such as shell or tube fragments and bored
rocks, but there exist unusual abundances of some kinds
of animals which would not be normally expected unless
there was an unbalance of feeding types. These abundance
peaks are most prominent in Zone I (Limited Enriched
Sector). It is noteworthy that areas of displaced popu-
lations are perhaps constantly being restocked by animals
of other kinds, Settling stocks as swimming or creeping
larvae may be constantly available from outside sources,
but only few kinds might be expected which can establish
themseives. The replacement of worn out, starved, or
overpolluted areas in Santa Monica Bay may be ecologically
complex, It may differ with time of year and with depth
and kind of bottom, The temperature, salinity, and pollu-
tion tolerances of the invading animals, are other
factors of importance,
Animals can be further classified according to the
ee seebeas vay) the wot m
mal ink ‘areas! anaes nent womens re a
aches 1 ; bong! bite L afomery ed
es) iaeedh omwh Ya ee pasted, tain’ one septs ne
bP agli boron yt bene a ‘ton seam» fete ats
pancho: ‘i eat Waser ‘git nie, mena SM, ees
Ny!
eda ate ‘hist on 1 anit oe ae ‘sat hig ce a
otto: bata” enka MEN ot eat sao so Fy)
» eoaltty ge entra Buters: ee ihe:
29
depth of horizon at which they exist, from shallow
(a few feet), to slope and deep (2940 feet) areas (see
Zones I to VI for the major areas in Santa Monica Bay).
They can also be classified according to biological
requirements, such as varying amounts of dissolved
oxygen, or lack of it (the near absence of life in sub-
Sill parts of Santa Monica Basin may be the result of
such a lack), These animais can be classified according
to their feeding habits as predators or scavengers
(living on dead animal food), carnivores (flesh-eaters),
herbivores (plant feeders), detritus feeders (such as
most animals near Hyperion), limnivores (ingesting mud
with contained microorganisms), filter feeders (straining
water containing nutrients), or as commensals or parasites
(depending on other animals for their food). Aili of these
are represented in Santa Monica Bay. In normal habitats,
ali feeding groups can be expected to be represented in
an association, In the environs of the outfall, however,
most species are detritus feeders(polychaetes and Astro-
pecten), Predators are occasional, entering the area as
foragers (such as larger Cancer crabs, frog snail, and
flounder fishes).
Species vary according to tolerances to salinity
so that near the outfall where large volumes of nonmarine
water are introduced, most echinoderms, mollusks, many
entomostracans and polychaetes are unable to exist. As
the effects of these dilutions decrease, the number of
<? - : te Loni (tea ‘alts
i Se ni ‘i me, satu nae ww noe diane ll “wa Wak:
. onesoatle: — eyes 7 esate
gs _ a we (nh 1 Hawt sein ol te n 4 Fe ‘ v “J
it
a2
6 7 abil, uta e) ni wa an wh Pah et aie Ly
' Fe nie ie pe ae
>: . : A ln iy ay es ahs Wade er
hevad ws ry elt i anol? i pL aon
dala aa ee auch st
PO my eco i
hae mx /
shan! pudronpes ) aesorteital fea.
“een Gi t ORR RE ONSD DT RPS ET, a | ya nei ayate nines stems Lat
REPRE HAA SO OR? Hh an i Danny s sans nothin nade
igen he lb ia
st ws,
; aa Pela Lim nenes
oa eh a a poke i euat me rhe rag ua
(iit
Die . Dh bie . wade Maes ok th Rea ieee rt we GM Bs,
oh ie % y ened i i 58 i its : wat ie Sy est Cg i, i
iat Cees: Mg ks ih Nica oy Ae oa Jaa wh
; ts ae | hs) bad aoe 4 & et _ oice ‘ Hy Ly pe
(a
4 a oO Ge baking, phat. y Bee phe
th ty
vine ey en eapmentnke tie? whee et ee
, Pea wits he Nein yeh or op kane 0 Peay f ue Fon | ie “i
Biwi |
‘ite wie tr 8; ma rasa A Reis = sie
S BES | '
we ack nt 7
30
kinds invading the areas is gradually enlarged and
approaches peak productivity.
Ecologically these species vary according to the
sediments they occupy; whether mud, silt, sand, gravel,
rock, algae, or mixed bottoms. In the sediments they
maintain over (pelagic), on (epifaunal), or in (infaunal)
positions, The positions may differ according to stages
of life history, for some have pelagic eggs and larvae,
and at a certain age they sink to the bottom and creep
about, seeking suitable sediments for settling. Once
a suitable habitat is found, they metamorphose and grow
to maturity in the sediments, Other animals may be errant
or foraging as adults (crabs, Chloeia, many snails),
or they may be attached to a substratum, as hydroids,
barnacles, bryozoans, Many are tubicolous and construct
characteristic tubes which require building materials of
exact kind and size, according to kind or species, Others
are nestling and occupy the burrows or tubes made by
other kinds, or they may be somewhat buried (seawhip,
Giottidia), or burrowing (many mollusks, worms, some
urchins), Each kind has specific requirements which
differ from those of others, and each species is uniquely
modified to occupy its niche at maximum efficiency.
In Santa Monica Bay only a few boring species have
been identified, Such are some sipunculids, in dead
tests of Dendraster, Zone II, and others in shaley rocks
in outer parts of Zone I, A small clam (Saxicava) occurs
ith
‘ooucindl obs $8) Ta on si
R ih
IA, pia ‘Rite, eh ee
aay) *idbeldereyeanes veer
aa iG
pe Hoang sh ab ety i race ys
aia anon bites
ite belive
oe es
q hd a: 24 wb ay ae ied gdp es a gk he ta
datdutwie be wi ahd a it ot La bi) tt
ee: ‘ inpari 4 is AE ee Wh oop ee ters
bat, #6) id me a ve vig, shit oe oe
i
qtowps i) me ” ibe
W
31
in calcareous rock and a boring sabellid in the outer
areas of Zone I, A deep-water boring mollusk, Xylophaga,
occurs in water-logged wood. Commensal species may be
more frequent than current records indicate, Astropecten
(the large sand seastar) harbors two polychaetes, and a
small clam is frequently overrun with a creeping hydroid.
Parasitic forms have been infrequent or perhaps overlooked.
Such are parasitic crustaceans (copepod on Terebellides;
rhizocephalan in Gnathia) and others, The presence of
commensals or parasites with host species can be regarded
as a normal or healthy condition , and when one of the
association species is absent, it is usually the most
dependent one (in such cases, the parasite).
In Santa Monica Bay it has been found convenient
to classify animal associations according to increasing
distance from the ends of effluent pipes. Six such areas
have been identified, varying with successive distance
from an inner zone, at intervals of a haif, to several
miles, The inner, or most shoreward zone, the Beach-
Sand Fauna, is characteristic of much of the strand of
Santa Monica Bay, and may be littie influenced by the
effects of pollution. Only one sample, I W-1, was
examined. It contained mainly sand worms, Nephtys
californiensis, several snaiis, a sand crab, a prochordate,
and numerous smaller sand-dwelling species. Ali of these
species may be dug up along the sandy beach at low tide.
Sample I W-2, from the bottom under the end of the
LAr a a
bi i 4"
o- Loo feed vos penee Dhaka: conto
oe “gptaegep tea gttas tai misons4 ‘Hie wz 1 ett bn i
‘a | . “ ebay RTI MRL IN on Syoeana Cantae 2 tea
bho shy salgoeis. # aha my eeivd hauranie a" aly
Dies “Gpeavotlinva cadena, 0) tagivonnhax nied per
¢ sebitss Leite. tet’ ne Met ‘fen ¥ “etka haw wth : oh + seh's beg Oh
i
me iy ln, Roaseei ey “eatin a ba | " Hitter « fe,
ee No” S88: Aiea ae 1 esha selon, me | ce:
2
\ ea sey she" bare a Kepisged Pini
i
éniucens hE ar ghkbouadll's i aoe h oan, f tama: ¥i
; a ;
Beers Aoud) xy S00 by ene wD Yor abn ‘ann fae a
i ey ; : SaeR Eb ovinawsour | ane ged wi ae SONNE ae ;
saneves o Fe Lats wy teed ri a anh: ae er. ‘yw
— Eta, - cr, 98 ( ead: deo: Hews aede, Date ws eathi at s
v Hae, &
ee hhesta mit: ay “obi ene Ain abode: wk
wt 1G: basal pig Mad dante oH Yas by ei, vat #98
amie ad i rate site Mai wre nb igs
sit any nr wee uf fA a sith oth en ‘pe
Ae
&, saab rottbos 8 pe tsa ia “* vere acing, “id iy
| sKod) Pt Pes Canoe Prasat pw jetta | ‘nd dione
he dae ar)
‘job pias vhetne oh ee
32
pipe, is regarded as a Limited-Pollution-Fauna. Most
characteristic were two onuphids, Nothria elegans and
Diopatra ornata, also Nephtys caecoides and Glycera
americana, These are also intertidal forms and can
withstand considerable exposure or dilution. Other samples
in this zone (I SW-1), where sediments were coarse, had
considerably more Diopatra and some other kinds, Their
kinds and numbers increase gradually with greater distance
from the pipe (Zone IW-3 to 6), and they come to attain
excessive numbers and sizes farther away (Zone I W-6 to
12) where the greatest numbers and largest sizes are
found. Thus we may speak of peaks of productivity or
maximum biomass in this zone.
Biomass is an expression of the quantity of organic
matters expressed in terms of unit areas. It varies with
kinds of bottoms, and with depth so that the greatest
volumes are usuaily in shallow depths. In Santa Monica
Bay such peaks are related to amounts of nutrients supplied
by the effluent. They have been observed in a variety
of species (Figure 4), some of which are listed, and
others are named in the Analyses. Such peaks of pro-
ductivity have been observed persisting through different
months of the year. Thus they are probably not seasonal
or fluctuating or the resuits of large numbers of larval
or juvenile individuais, but perhaps are directly pro-
portional to increased nutrients and indirectly to variations
in salinity from normal sea water. The estimated biomass
» suka haneat (Ab Bigwt cm om |
: , io ‘) A age eqnicol Te vatence
- ae i ; ieee Wik mii dabbruytai ees ‘pk neath
a. : ‘wating co paki th, tie x uIgsanaee ‘texan haoon
7 wath: agen ode, shewaaboe erent, hbo )
Fi. ; sl J dine: a je, nate ‘anos bi Pon hes
* | panpleT atibap ye ya aig op Seater » vedinw a ba
at naar p | his. sare hag be accu: enony one bey ie
as re Wee ere oem aban writing ‘ome, na ipo dectencns avid
eo : ao rr ‘se ALM Peegent ; si a Sette hit nner, el: ied
. es, dee te bv ne basa de odor te, dene: we » au ath
: | mae | . ° | Bf abies okie fe Yi
abeays x6 Thiel id Faw bit Wek thes Pin ui a
iat qekey pe mee) oR NG eid?
Hell 0 + ;
teen hiwan ra efit hadi ad i has) Ae. hea awd us Sai 2
wit nol ahage af, 9 pabteeat tind Linatie dot ahthaen, aya ha
“ Reilayse atietsien | he: ebipins iid Sinaia. bial cobs of
rvetaay a ie tothe 26a ¢ ne shi adh ie sigh ie
ew shaven aah, dak He, te BOS | eh Geaneay
«og 6: aba: ape i we patti “hala “lk be an ‘ay
srs ites Hawa pies Pate. a ‘Worn fe’ ane” ova ‘G bw
an! Lavna.atga) tai: pheaert: wae yen apie he sey wits, joe .
na ee aca! 4a) muacncas sata” hiv. eA fue, age ae hey
; Pl i i j
mi) ON ro4g 1 a 4 ee te et } tna is! "
y
i)
33
Figure 4. Graph showing estimated biomass values in Zone
I, with peak productivity at I-19 to 20.
acne
b N
Volume of Animals inml.
500
o
LS
o
~
Ww
Li PQ AF: eC S tC GUT ah Bk LORe 2 16 Ae 190.) 20 (22)
Pollution Limited Unlimited -
Tolerant ERriched Diminished
Estimated Biomass Values,in milliliters for samples
takenin Zone I, from 1 to 22.
|
{
;
{
Se SS eon ee
Se ee
Se ee ee ee ee
“o5.- “She ee
she ar aE aie we
; “hig facet
wheel rerien id:
10F 6e net enotiti
Wks
34
values, taken from samples in Zone I-1 to 22, are indicated
in Figure 5.
Polychaetes with peaks of productivity, the numbers
of individuals, and the location of zone or area are:
Ampharete ?arctica 200+ individuals (San Pedro)
Aricidea sucailea 90+ at 224 (San Pedro)
Brada ?pilosa 25 at Ve25
Capitella capitata nearly 1000 at 42 (San Pedro)
Chloeia pinnata 150+ at II-7
Chaetopterus variopedatus hundreds off Whites Point
Chone ecaudata 200+ at 69 (San Pedro)
Dorvillea articulata 200+ at 42 (San Pedro)
Eumida ?sanguinea 41+ at 42 (San Pedro)
Exogone sp. 26 at I NW-4
Glycera capitata 16+ at I SW-8
Goniada littorea 12 at III-1
Haploscoloplos elongatus 13+ at I NW-3
Harmotho® lunulata var. 10 or more at III-4
Lumbrineris spp. 100+ at II-=-7
Magelona (pouched) 20+ at I SW-3
Maidane sp. 50+ at V=23
Nephtys californiensis 15 at I W-1
Nereis procera 70+ at I SW-1
Nothria elegans 35+ at I SW-3
Nothria pailida many at V-=17
Pectinaria californiensis 90+ at I W-10
Phyllochaetopterus ?prolifica 50+ at II-3
35
Figure 5, Graph showing peak productivity of two associated
ophiuroids in the Limited-Enriched-Fauna of
Zone I,
Chit
y
ohusdl-betiahl ade?
300
250
200
175-
30
BES 6 ve Bee TOM Wee ee MG ie Is)
Bocaniomim Zone Ll.
Chart comparing Maximal numbers of Amphipholis
squamata in Zoné LWGolid line) and Zone I SW, broken
with peak numbers between 8 and 11.
36
Pisione nr remota many at II-1
Prionospio nr malmgreni 120+ at II-2
Prionospio pinnata 40 at I SW-6
Ophiuroid echinoderms with peaks of productivity
and location:
Amphiodia (Amphispina) urtica 654 individuals at
I W-113 441 at I W-9; 328 at I SW-9; 141 at I SW-8;
123 at I W-73; 118 at I NW-8; and 46 at I W-16
Amphiodia (Amphispina) digitata 531 at I W-10
47 at III-11; and 37 at I We13.
Amphipholis squamata 305 at I W-11; 176 at I SW-8;
157 at I W-103 126 at I SWe-9; and 78 at III-11.
Amphiacantha amphacantha 24 at V-4
Ophoithrix spiculata a thick mat with hundreds of
individuals in a sample off Whites Point.
Bio-index is an expression of the ratio of number of
species to that of individuals. It varies with kind of
bottom and with depth. In shallow areas it is lowest
in mixed bottoms where currents prevail (as at Whites
Point), or in Santa Monica Bay in Zone II, It rises
sharply with depth to Zone VI where the ratio approaches
one.
In Santa Monica Bay there is a marked decrease in
numbers of species with increasing depth. They may drop
from 60 or 90 species in a shallow sample from 60 feet,
ee eisubkvibnd
oe t oe te “ paine |
bgt t fade Low
ape ks i
eoninaoranw ane
377
to 3 or none in 2820 feet. Variations from a straight
descending line graph may result partly from imperfect
sample sizes, or they may reflect the presence of a few
larger predaceous individuals or other patterns of
patchiness,
Indicator Species
An indicator species is one which can provide
precise information in geography, ecology and distribution,
or one which can indicate characteristics of physical and
chemical significance. Such species, to be of value,
have certain requirements, They should be specifically
identified, they should be endemic to an area, not
cosmopolitan in range, and their horizontal and ecological
limits should be known, They should be easily recognized
so that their identity cannot be confused with nearly
related ones, In some recognizable form of their life
history they should occur in all seasons, or at least
not fluctuate. For those undergoing changes in develop-
ment, their stages should be known and recognizable.
They should also occur in sufficient numbers to represent
stable, not stray, populations (Sverdrup, Johnson, and
Fleming, 1942). Their tolerances to varying amounts of
salinities, to changes in temperature, to varying concen-
trations of silt, to possible toxic substances, or
degrees of acclimitization of these factors should be
known, Thus, sedentary or attached species have greater
7 oe oteaingooe ee oy
38
indicator value than foraging or roaming kinds.
In Santa Monica Bay the use of indicator species
seems especially practical because many occur as aggregates
or in association, and have limited ecological dist-
ributions. Some of these by location in zones and
alphabetic by group are:
Ampharete ?arctica near outfall, nr 42 (San Pedro)
Aricidea epee at I SW-1, 3, 6; II-1, 3, and 8.
Capitella capitata at SW-3 and nr 42 (San Pedro)
Chaetopterus variopedatus rare in SMB; common at
27, 43, 110, and 186 in San Pedro area.
Chloeia pinnata at I SW-8; II-7; and III-5
Chone ecaudata at 69 in San Pedro area
various cirratulids, especially Tharyx, Chaetozone,
at I W-1 and 2; I SW-1, 3, and 6; I NW-1 and 9.
Diopatra ornata I SW-1; I NW-2
Eumida ?sanguinea rare in SMB; nr 42 in San Pedro area
Giycera americana and G. capitata in varying distances
from the outfall.
Hypoeulalia sp. at I W-1
Lumbrineris cruzensis, L. bicirrata and other kinds,
at varying distances from the outfall.
Magelona spp. differing in depth at varying distances
Nephtys ferruginea at I SW-3 and 6
Nereis procera at I SW-1, 2, 3; I NW-3 and 4
Nothria elegans at I W-2 and 4; I SW-2 and 3; I NW-1
rte
ae et
§ eft
bevoecs
heave ealnmreg emilee
fk Tas
bh A
poet rt Bex a \
aK i Bice i. i
ie
i
POY a Set *
Sgt bie
39
Onuphis nebulosa at I W-13, gravelly or sandy
bottoms remote from the outfall
Pectinaria californiensis varying distances from
the outfall, associated with fine sand.
Pherusa capulata_ gravelly bottoms remote from outfall
Pherusa inflata penetrating soft shaley rocks
Pholo#® at I W-8; II-7; and III-5
Pisione nr remota at II-1; 36b in San Pedro area
Prionospio pinnata at I W-7; I SW-6
Rhynchospio arenincola 63a (San Pedro)
Tharyx parvus at I W-2; I NW-7; I SW-6
Echinoderms with:
Amphiodia (Amphispina) digitata at I W-10
Amphiodia (Amphispina) urtica at I W-9 and 11; I SW-9
Amphipholis squamata at I We-10, 11, and 12; I SW-8 and
9; I NW-8; III-11
Ophiothrix spiculata 42a (San Pedro) requiring current
Astropecten californicus in Limited-Enriched-Fauna
near the outfall
A checklist with keys to systematic entities of the
commoner species from a given geographic region would be
most valuable to permit the analyses and evaluation of
different populations, In southern California this lack
is one of the greatest obstacles in ecological surveys,
for many large and important animals are either unknown
Faesisto i Eabup: 4
_ ananaiobedo
40
or unreported.
Results of Some Other Biological Observations
A fish-kill in June 1956, resulting in the death of
several hundred tons of fishes, along the shallow beaches
of Santa Monica Bay was found to have been caused by the
discharge of large volumes of scalding water by the
Edison power plant, The fishes examined were surf-
perches and measured 3 to 5 inches long.
The use of current meter lines along outer parts of
Zone I resulted in occasional catches of the large sand
sea-star, Astropecten californicus, with commensal poly-
chaetes, Arctono® and Podarke, both of which do not occur
with their host in the more immediate environs of the
effluent outfall. The fire-body, Pyrosoma atlanticum
( a colonial tunicate), was occasionally snagged on lines
during the summer months.
Lobster traps baited with dead fish were set at
varying distances from the outfall, with the following
results. On one line extending 1.2 to 3 miles from the
Hyperion stack, in depths of 10 to 25 1/2 fathoms, traps
were dropped in the evening and pulled up in the morning.
The stations were those of the VELERO IV numbered 4448-56
to 4451-56.
Station 4448-56, in 60 feet.
Bursa californica, the frog snajl; two larger
sand dab fishes; 9 Astropecten californicus;
ene
7 eo Tyen2aao8 ms nh tt
a te anos L788: Syabboume nono
41
17 medium large Cancer crabs:
Cancer jordani -3: one female 50 by 75 mn,
with spent egg capsules, and two smaller
immature males,
Cancer antennarius-14: none with attached
eggs or larve;
male, 149X95 mm, 429 grams (wet weight)
male, 130X80 mm, 273.5 grams
female, 140X95 mm, 458 grams
female, 120X80 mm, 247 grams
female, 148X95 mm, 404.5 grams
female, 130X85 mm, 288 grams
other juvenile males and females, about
two-thirds grown, some spotted or immature
stages.
The following were attached to the shell of Bursa:
Balanus tintinabulum californicus numerous
living juveniles and some large dead shells.
Crepidula the common slipper shell- one
Sabellaria gracilis a sand builder- 2,
one ovigerous
The debris from the animals in the trap contained:
immature gastropods, perhaps Eulima- 11
a brown papillated nudibranch
a slender dark-purple immature leech
several kinds of amphipods
a cumacean bearing ova
f{iud thee &
pay: }
42
a parasitic cyclopoid copepod, with a pair
of long egg cases
Podarke pugettensis, hesionid polychaete
several small specimens of a chrysopetalid
polychaete
2 nematodes
Substation 4448-56
Same as above but using a plastic mesh lining
in the trap. When recovered, the openings of the
trap had a very large Cancer antennarius wedged
across the aperture. The trap contained only 3
moderate-sized Astropecten californicus, a juvenile
Cancer jordani in the process of moulting.
Station 4449-56 1.7 miles from Hyperion stack in
84 feet of water. The trap contained:
Astropecten californicus 6 moderately large
Cancer antennarius 3 large with attached Balanus
male, 145X100 mm, 575 grams
female, 135X90 mm 368 grams (no eggs)
female, 135X90 mm, lacking chelae, 256 grams
no eggs.
Balanus tintinabulum californicus on carapaces
of Cancer
Station 4450-56 1.95 miles from Hyperion stack in 102
feet of water, The trap contained:
Cancer antennarius 8 large: 4 males and 4
females, all with attached barnacles on the
43
exposed surfaces of the carapaces. The largest
male, 175X115 mm, lacked two walking legs and
weighed 827 grams.
Station 4451-56 3 miles from Hyperion stack in 153
feet of water, The trap contained:
Cancer antennarius 6; the largest a male,
168X110 mm, weighed 857 grams.
Astropecten californicus 7
Balanus tintinabulum californicus, on carapaces
of Cancer crabs.
From these results it appears that not only crabs
and snails forage in search of food, but that Astropecten
has similar habits.
Comparative Food Vaiues of the Benthonic Animals
The wide-spread use of bait-worms in various parts
of the world indicates the preference of many fishes for
this kind of food. Commonly used are several kinds of
Glycera, Marphysa, nereids, nephtyids, opheliids, Arenicola,
and others. (The frequently used terms blood, sand or
proboscis worms, refer to color, habitat or some part
of the animal. The names differ with locality and have
no specific meaning.) Soft-shelied clams and sand shrimps
are also used for bait. These animals are the most natural
foods of animals in the sea. Some animals which occur
in great numbers, such as sea-stars and brittle-stars,
have little if any food value, whereas urchins may be
epson tho’: Ry enssine
‘ ie
Rs
deo ine tes fi sis, exeamite hss ete past. ete
mgiasge a toate see beat ea) deen
ata phnodiviod att. pr ons ew ut aes
° . " Pa ;
ee ‘
2,
. eer pda. ban, maian 8 Herat
| Mites 3 , +O wd ia i nat
1), RONG da hd babe Tae
een “pi. Cue
44
sought for by some foraging animals, Pelagic larvae of
many benthonic animals are a chief source of food,
It is generally agreed (Blegvad, 1951) that many
animals select their food and that they seldom change
diets. Benthonic animals can be regarded as the chief
source of food for predators and carnivores. Fluctuations
in their kinds and numbers can thus provide and index
of productivity of animals in higher categories, Ina
series of studies on the food of bottom-feeding fishes
of Danish waters, Blegvad regarded most pelecypods and
smaller crustaceans and nearly all polychaetes as first
class plaice food. The amounts by weight and frequency
in stomach contents of fishes, gave worms the highest
ratings, varying from 50 to 90% Pelecypods and crusta-
ceans comprised most of the rest. Later Blegvad summarized
the results of studies of nearly 25 years and showed that
only slight variations in kinds of foods occurred with
time and place. It was found that the amounts of com-
mercial fishes caught were directly related to the amounts
of bottom animals present. These experiments may be
directly applicable to the animals existing in Santa
Monica Bay.
Size of the Largest Animal Species Taken
Most invertebrate metazoan animals in Santa Monica
Bay are small to minute, often measuring less than one to
two inches long. A few individuals, from scattered places,
Av,
45
have been conspicuous for their size or weight. They
include:
Cancer antennarius Station 4450-56 827 grams
Astropecten californicus at I SW-4, 3 1/2 inches across
Pisaster giganteus at I NW-6, weighed 187 1/2 grams
Stichopus californicus at I W-20, measured 5 inches
Compsomyax subdiaphana a clam, at III-7, measured
2 1/2 by 1 3/4 inches and weighed 24 grams.
Macoma a clam, at II-6, weighed 31.7 grams
?Drupa a snail, at I NW-6, weighed 75 1/3 grams
Glycera robusta at I W-10b, the only one of this
kind taken,
Acknowledgements
The author is indebted to the various teams which
cooperated on board the VELERO IV, in taking and processing
the biological samples used for this report. David Scholl,
assisted by Donn Gorsline, Emil Zalesny, and others, did
much of the field work, To Drs. Robert E. Stevenson and
K. O. Emery she is indebted for organizing the various
aspects of the project, and for much information on
physical data. The maps and figures were prepared by
Anker Petersen, The author is especially thankful to
Captain G, Allan Hancock for his interest and support
of these studies, and to the Hyperion Engineers, Inc.
for their financial aid.
jashodg bast pated BL
1 of tviauads
| aa ypaaeeele
46
Literature Cited
Berry, S., 1956, Moliusca dredge by the ORCA off the
Santa Barbara Islands, California in 1951,
Jour, Wash. Acad. Sci., Vol 46, pp. 150-157
Belgvad, H., 1930, Quantitative investigations of bottom
invertebrates in the Kattegat with special
reference to the Plaice food, Rep. Danish
Biol, Sta., Vol. XXXVI, pp. 1-55
» 1951, Fluctuations in the amounts of food
animals of the bottom at the Limfjord in
1928-1950, Rep. Danish Biol. Sta., No. 53
Ekman, S., 1953, Zoogeography of the Sea, Sedgwick and
Jackson, Ltd.
Hartman, O., 1955, Quantitative survey of the benthos
of San Pedro Basin, southern California,
Allan Hancock Pacific Expeditions, Vol. 19,
No. 1, University of Southern California
Press, Los Angeles
Hartman, O., 1956, Results on investigations of pollution
and its effects on benthonic populations in
Santa Monica Bay, California, Allan Hancock
Foundation
Miyadi, D., 1940, Marine benthic communities of the
Tanabe-Wan, Annotationes Zoologicae Japonenses,
Vol, 19, pp. 136-148
Shelford, V. E., A. O. Weese, and others, 1935, Some
marine biotic communities of the Pacific
coast of North America, Ecol. Mon., Vol. 5,
pp. 249-356 ean
Sverdrup, H. U., M. W. Johnson, and R. H, Fleming, 1942,
The Oceans, Prentice-Hal1, Inc., New York
Wilson, D, P., 1953, The settlement of Ophelia Bicornis
Savigny larvae, Jour. Mar. Biol. Assoc., Vol.
XXXi, pp. 413-438
» 1955, The role of micro-organisms in the
settlement of Ophelia bicornis Savigny, Jour.
Mar. Biol. Assoc., Vol. 34, PPeo 531-543
a ee 7 dl
Jue
Ach NTE
a
R:
is beret EF
oy
A
ere a |
a an Sees
is
nay
47
List of stations in Santa Monica Bay, made by the VELERO IV,
from which biological samples originate,
with cross reference to Zone number
roe wioot
vetents ata 6g brid Inptaators
‘eto Bako oS oa
STATION LIST IN SANTA MONICA BAY FROM
Sta. 2148-52.
fms.
Sta. 2149-52.
fms.
Sta. 2150-52.
fms. OPG took 1.58
Sbae eclbol—5el<
fms.
Sta. 2189-52.
fms. OPG took 1.07
Sta, 2190-52.
fms. OPG took 5.02
Sta. 2191-52.
fms. OPG took 2.70
V-l1l.
Sta. 2192-52 °
fms. OPG took 1.51
Sta. 2193-52.
fms.
Sta. 2194-52.
48
WHICH
BIOLOGICAL SAMPLES ORIGINATE
Sep.
OPG took 2.8 cuft.
Sep.
OPG took 2.7 cuft.
Sepe
cuft.
Sepe
OPG took 0.5 cuft.
Dec.
cuft.
Dece
curt
Dece
cuft.
Dec.
Cutts
Deco
OQPG took 3.0) cutt.
Dece
fms. 6-foot beam trawl,
Sta. 2558=+53.
fms. OPG took 2.89
Sta, 2359-53.
fms. OPG took 0.63
Sta. 2360-53.
fms. OPG took 1.63
See II-9,
Sta. 2561-53.
fms. OPG took 1.44
Sta. 2362-53,
fms. OPG took 2.83
Sta. 2474-53.
fms.
July
cuft.
July
CUE.
July
curt.
July
Citi Gre
July
cuft.
Octo
OPG took 3.9 cuft.
AX) AAO PAC Reh malils ele Myeil Gea) ANGYL
Bottom is mud. See V-15.
2B4 GRO Gow Bao oalie® BET yA, “ate WQS)
Bottom is mud. See V-13.
260, 55° 47 56". Ile? Sir 16". Min S10
Bettom is mud. See V=25
27. 33° 48" 06", 118° sof gol, In 291
Bottom is mud. See V=24e
Bo 33° 4st 35", 178° 28" 30", In 228°
Bottom is fine sand and mud. See V=-20.
Bo BO Als) ae le BAl wey. ada aleys
Bottom is fine sand and mud. See V-18.
Be 65° 491 aie thas eG “AUS aga AS
Bottom is green mud and fine sand. See
Bey SSO 40h Sai ieee 4 aa Oma ous a
Bottom is fine mud and sand. See V=-35.
Be So° 400 2g" Mase) Sa let im 20
Bottom is fine sandy mud. See II-8.
BS ese Why ial pals Bist Bint,” Sha a6
Bottom is grey sand, See II-5.
Sa Se. 4260 Te" 5 Tee) Sam GOA Ne manos
Bottom is grey clay. .See V-12.
ge S357 40" OOM, 118° 26" Os. |) tmism
Bottom is gray sand and clay. See II-7.
Sema se 47 SO. Tee 27 eS atrie sine
Bottom is gray sand, rock, and clay.
Bln) SS CT OE ae mo Os 2 aeey allay?
Bottom is gray sand and mud. See V-14.
Ba ESO ABU Cet able aly eyes nay elste
Bottom is fine gray green mud. See V-29.
Ae coe AGNOs" lsc sa moat. alain 205
Bottom is green black mud.
See V-352.
a aria. Pit Ane Prue ye cacao
‘ ay “iy Me) h, mn r
as A ne. po. sSSORr8
a i, nt ey eS a mec ih 7
a
eg ee here
ds oh LE | ee Ppt eee Bare
ae Slay CRG.
Di via
je: aie 8
"ae
roy Pare.
SV gee iaaiieg es)
mates) be dy ?
49
Sta. 2620-54. Apr. 7. 33% 441 08", 118° 350 50". Ima 4ale
fms. OPG took 2.20 cuft. Bottom is gray green mud. See VI-2.
Sta. 2722-54. May 8. 33° 461 OO", 118° 26' oo", In 14
fms. OPG took 0.25 cuft. Bottom is green sand and shale. See
II-4.
Spa e72s-545 Mayes Soweto u OOM, TTS VSO! 100!s ainase5
fms. OPG took 3.4 cuft. Bottom is fine green mud. See V-30.
Sta. 2724-54. May 8. 33° 48! OO palsy BO? OW, | 16a IH
fms. OPG took 2.52 cuft.e. Bottom is fine green mud. See V-16.
Sits 2725-54. eMay Ga. Soe 50! OOTe MISSace nOON A mms emt
fms. OPG took 1.13 cuft. Bottom is coarse green mud. See V-l.
Sta. 2726-54. May 8. 33° 50! Oo"; 118° sO" Oot mair70
fms. OPG took 2.77 cuft. Bottom is green mud. See V-6.
Sta. 2727-54. May 8. 33° 50! OOM, Anise 3200's tneGs
fms. OPG took 1.76 cuft. Bottom is green mud. See V-4.
Sta. 2728-54. May 8. Soe 26 OOns date 36' 00". In 445
fms. OPG sample not measured. Bottom is green mud. See V-35.
Sta. 2729=54. May 8. Bae 45' 49", 118° 35' 50", In 445
fms. OPG took 5.4 cuft. Bottom is fine green mude See VI-5.
Sta. 2788-54. May 22. 33° 4g! Os") teen 24 trays ima Oh5
fms. OPG took 1.32 cuft. Bottom is grey sand and shale. See II-1.
Sta. 2789-54. May 22. 33° 491 59", I1s® 34! o5". “In 90
fms. OPG took 1.7 cuft. Bottom is blue grey mud. See V-9.
Sta. 2790-54. May 22. 35° 49' 58", 118° 36" OO". In 180
fms. OPG took 2.52 cuft. Bottom is blue grey mud. See V-17.
Sta. 2791-54. May 22. 33° 48! Oot, Dis set OS"s) tn. 405
fms. OPG teek 5.08 cuft. Bottom is blue grey mud. See VI-l.
Sta. 2792-54. May 22. 33° 47! 59" Se) Sa" 5%.) laa 500
fms. OPG took 2.77 cuft.e Bottom is blue grey mud. See V-26.
Sta. 2793-54. May 22. 33° 48" oo", 118° 32! 00") In 251
fms. OPG took 0.95 cuft. Bottom is blue grey mud. See V-22.
Stm..2794-54. May 22. S35°.44' o2", 1ie® ge! OO™) im 430
fms. OPG took 3.4 cuft. Bottom is blue grey mud. See VI-4.
| Sta. 2965-54. Oct. 30. 339 44' 22", 118° 44' 16", In 490
oe Campbell grab took 5.74 cuft. Bottom is grey green mud.
ee VI-135.
Sta. 2964-54, Oct. 30. 33° 49' 26", 118° 49' 16", In 490
Bray Campbell grab took 5.74 cuft. Bottom is grey green mud.
ee VI-14 °
arate eg: hag eer peeo
iy ee. © sak oie aa By mene as
gt Pod ‘ay CaN i sree 9
eau. ae) Sona ‘arta
Mah ‘a? renee! Mh aie
: Da’ oak Ai coe thy Ventt re
Par iit, hoo 4ae fuer: bet ha
sal of nee ie arty nat t it
eee ta 000) Fee Sarr (hab thd ee ee
BR ehila Ate Oi hi ult ef mods On
HOG. Ae, Peg < iy psbA Tue Sl ae
P Mi L Dagan 1 >
won Pier isan ae hae Fi
r te 7a We ial | it
BLL og A! EE TA eee
. OA {eer as inte lk “ah eF.
; mit prh ig Pi ae me a om eeu RTS
ddichale ey pRUATh a, + heentaheninae Paes ‘taut
we
y ae pein a aed c ORES 2 ee
out et” , ay v ca bid + e ‘ bs i ee o Beh
ett a8 eOMod Pits ‘baae eer). Fh) med ee a
Oe, Bt Fao
Weel, wee
dee
1280
wed
; a ; fen ay a By baa
Cc, ok Gy | SRP ate a
* & c i
Pei ‘88 *%
ne ee
ORL «eee ee bare Sat 8
it al reads 1 a 4ig08
: aie.
we cae ended,
Mas, A «Maw.
kine anes (ran nt mate
? < o i « A
50
Sta. 2965-54. Oct. 30. 33° 54’ 23", Ie BAC TY aga), A910)
fms. Campbell grab took 3.5 cuft. Bottom is grey green mud. See
VI-7 °
Sta. 2970-54. Oct. Sle 335° 45' So", 119° 05! 00", In 476 fms.
Campbell grab took 3.59 cuft. Bottom is grey green mud. See VI-8.
Sta. 2971-54, Oct. 31. 35° 40° 37", 119° OO 09". Im 4es5
fms. Campbell grab. No bottom, grab took water only. See VI-9.
Sta. 2990-55. Feb. 5. 33° 49* 08", ms© PAB SMO abo Lal)
fms. OPG took 3.08 cuft. Bottom is fine black mud. See V-10.
Sta. 2991-55. Feb. 5. 33° 52! MNT MI) BIB MS A Io. Bye
fms. OPG took 0.5 cuft. Bottom is black mud. See I SW-7.
Stas 2992-55. Feb. 5. 36° 55" Oe", 1ile® 260 57> m9
fms. OPG took 0.5 cuft. Bottom-is' sand. See-1i:SW-1.
Sta. 2993-55. Feb, 5. 33° 54? 59") 118° 28r 47", In 21
fms. OPG took 1.38 cuft. Bottom is green mud. See I W-6.
Sta. 2994-55. Feb; 5. 33° 55’ 00", Tig® gorge", tn 29
fms. OPG took 0.69 cuft. Bottom is green mud. See I W-9.
Sta. 2995-55. Feb. 5. 33° 55! oo", 118° BU IMA GN OS
fms. OPG took 0.95 cuft. Bottom is grey sand. See I W-135.
Sta. 2996-55. Feb. 5. 33° 55° (Ofc shales © te O24) sin 5@
fms. OPG took 0.61 cuft. Bottom is reck. See I W-17.
Sta. 2997-55, Feb. 5. 33 54? 57 aon Sots Onn mim aTOO
fms. OPG took 1.89 cuft. Bottom is fine green mud. See IV-1l.
Sta. 2998=55. Feb. 6. 33° 51° hes Dales wy YON aaa ZO)
fms. OPG took 0.357 cuft. Bottom is black mud. See I W-21.
Ste So994554 Rebs 6.53 Ss! 1, tae 4o'coo™, Im 250
fms. OPG took 2.83 cuft. Bottom is green grey mud. See IV-7.
Sta. 3000-55. Feb. 6. 33° 55! UES aL ey OMG) 1d ALO
fms. OPG took 2.2 cuft. Bottom is dark grey clay. See IV-35.
Sta. -2OOl-556 Feb. 6, 66° 57'.02", 1IB° S51 OO%.s im 70"
fms. OPG teek 1.89 cuft. Bottem is dull grey clay. See III-9.
Sta. 3002-55. Feb. 6. 33° 57? Oui, abe al, aha, ai}
fms. OPG teok 2.77 cuft. Bottem is dull grey clay. See III-12.
Sta. 3003-55. Feb. 6. 33° 57' og", 118° 40" 00". In 160°
fms. OPG took 2.45 cuft. Bottom is dark hard clay. See III-15.
SpalisOO4=558 Hebe os so. 57" OO", Mee 42nig7 i". )) mee soe
fms. OPG took 2.2 cuft. Bottom is green grey clay. See III-14.
.. age al Oey
: : high cl siete) ir
be | i ay 4 Mi, be , if sal '
* wn he at | af ed hegs th c8 5 ‘ee gan)
haa wis Hoga meee ts
| : kt ioe ae es a
Cid & ie @ I it :
hee Tl
ey y Sanh
vith,
j 1
i nae yh 8
aed ie ; “as See a
Ae ®
iit ay ra um
Mery i aap
pats < ial we wi
Ors Lat a a
eeralty eat ,
51
©)
Gem SG wow OO! iB Aan ea5te taps
Sta. 5005-55. Feb.
fms. OPG took 2.835 cuft. Bottom is green grey clay and mud. See
Tei bi.
Sta. 3006-55. Feb. 6. 33° 57' OO", 118° 477 05", In 330
fms. OPG took 2.77 cuft. Bottom is green grey clay and mud. See
IITI-16,
Sites SOlO-S5e0) Aprende) SS0) Sort 14" ISSN sor Som im 42's
fms. Campbell grab took 5.31 cuft. Bottom is green mud. See VI-3.
Sta. 3020-55. Apr. 1. 33° 54° 09", 119° 10" 15",° In 445
fms. Campbell grab took 4.45 cuft. Bottom is green mud. See VI-6.
Siar oicleaooeuidumer 25, Go. 147! bet, mliide Obi) migm) imines
fms. OPG teek .06 cuft. Bottom is fine grey sand. See II-2.
Sta. Siee-555 dume 25. (35° 47" SoM Tse 25" 00". rammi2. 5
fmse OPG took .10 cuft. Bottom is fine grey sand. See II-3.
Stapol6o-55o, Jume 25. 35° 49" 55"; 118° 24 39", In 60
fms. OPG. Bottom is grey mud-stone. See V-<.
Sta. 5164-55. June 25. 33° 49% sa AO BO BG Ia EO)
fms. OPG toek 2.85 cuft. Bottom is black mud. See Nari
Sta. 3165-55. June 25. 33° 50' 18", 118° 23" 36". In 22
fms. OPG teek 2.85 cuft. Bettem is black mud. See II-6.
Sta. 3166-55. June 25. 33° 49% 15", 118° 27" 14",° In 196
fms. OPG took 2.52 cuft. Bottom is green mud. See V-19.
Sta. 3167-55. June 25. 33° 48’ 16", 116° 29" 38". Im 280
fms. OPG took 1.95 cuft. Bottom is green mud. See V-23.
Sita. 5168-55. June 25. 53° 47° 40", 118° 32" 10". Im S15
fms. OPG took 2.08 cuft. Bottom is green mud. See V-27.
Sita 31692555. dune 25. 33° 46" So", 11a” sar 42"~° im 390
fms. OPG toek 1.95 cuft. Bottom is green mud. See V-3l.
Sits. Sl70-55.) dune eho So° 461 Sh", Lis? 37" Oz". im /460
fms. OPG toek 2.58 cuft. Bottom is green mud. See V=56.
Sivas ol71=-56%.. June eh. S20 46" 10", 118° 37° O48) aim 425
fms. OPG took 2.45 cuft. Bottom is green mud. See V-33.
Sta. 3175-55. July 5. 35° 48! 04", 118° 59' 2". Im 462
fms. OPG took 3.08 cuft. Bottem is green mud. See V-357.
Sta. 3174-55. July 5. Soemoolee" ties SOlrcone mime Seb
fms. OPG took 2.64 cuft. Bottom is green mud and silt. See V-28.
Ste. 3175455. July 5. 33° 50' 00", 118° 417°45".- "Im 410
fms. OPG took 3.15 cuft. Bottom is green mud. See V-354.
fe baa
; aT 7 Lao Os % A
OSG) nOiia Litce yas: ey
iit
ity
- arm a
iy Riv: Re eters ie
<< a ‘ aol. SRE ter zt hers
Oh
puny. OS
Ode vie ae \ a }
im ; v af . rt wll
thy wot es ey ahaa a
Sta. 4176-55.
fmso OPG took 1.95
Sta. 3177-55.
fms. OPG took 2.14
Sta. 3178-55.
fms. OPG took 2.35
Sta. 5179-55.
fms. OPG took 2.01
Sta. 3180-55.
fms. OPG took 1.70
Sta. 5181-55.
fms. OPG took 2.20
SHBELG 4194-55.
fms.
Sta. 4195-55.
fms.
Sta. 3200-55.
fms.
Sta. 3203-55.
fms. OPG took 1.57
Sta. 3204-55.
fmse OPG took 2.08
Sita. 3205255.
fms. OPG took 2.08
Sta. 3206-55.
fms. OPG took 1.05
Sta. 3208-55.
fms. OPG took 1.15
Sta. 4209=55.
fmse OPG took 1.05
Sta. 3210-55.
fms. OPG took 0.97
Sta. $215=-55.
fms. OPG took 0.84
Stae 6218-55.
fms. OPG took 0.51
Sta. 6219-55.
fms. OPG took 1.19
Ie NW=4.
OPG not measured.
OPG not measured.
OPG took 1.0 cuft.
52
Ree Bo ISO EL seenk alas eli | abet EO)
cuft. Bottom is green mud and sand. See IV-10.
July Saco mDoOuceu, llso Ait Seu nas oe
cufte Bottom is green mud. See IV-9.
duly bi too D4 56, LIBS SoNeesti ine so
cuft. Bottom is green mud. See:IV-6.
Dude | Co Dolwoone 1LeO” SOU rOOT ig
cuft. Bottom is green mud and silt. See IV-5.
IO Bo) SS! Rov BOY, Ao Gl BY 5 Ita NEO
cuft. Bottom is green mud and silt. See IV-4.
Tiiy BS GSO Bal We; GE BAN Oo, Ia LOA
cuft. Bottom is green mud and silt. See IV-2.
yey, Bs. Ber Bel CSUR ais Bey Oy. ia GG
Bottom is rocky shale. See I W-18.
delay Be) BO BOM OSs liso Bar ai. Ika Be
Bottom is rocky shale. See I W-15.
gts WG AO ON eS IES AOU “op! ida, 10
Bottom.is medium green sand. See IlI-2.
ley Hann S4>) OO 106" paltry SO ers ies vines
cuft. Bottom is fine green sand. See III-7.
July 7. 33° 58 10"; 1178°°39" 10". “In 115 ©
cuft. Bottom is green silty mud. See III-]l.
ogy 5 ES BUT CoM yas 7/05 lua ES
cuft. Bottom is green silty mud.. See III-10.
Sulla (S40 OO! Ol". Mideas7" Olen im si
cuft. Bottom is green silty sand. See III-6.
duly 7. 34° 00" O3", 118° 341 40", In 25
cuft. Bottom is green silty sand. See III-4.
Tue en SS) Si Dae 5 DUS 3404 (A 5 eee ens
cuft. Bottom is green shell sand. See III-8.
July 7. 33° 57! 5a'; 118°°321 36". “Im 29
cuft. Bottom is green silty sand, See III-5.
gual? YW, BAS OU Tole allisieae eel aca als;
cuft. Bottom is green silty sand. See III-3.
July 7. 34° 00! 03", 128° 30" 20". In.6.5
cuft. Bottom is green silty sand... See IIT-l.
Tulse Som uD 100s ioe Sgmc4 sie trace
cuft. Bottom is coarse sand and gravel. See
ine a Cir ed
"poe a Seete
Fi eer oe MAD Ane CREE OUT
hate ne, aie baa, ‘bam:
Gal ‘gt | efee 188 Reet
beat, eee voile fia, bam
Ze Tear’ wT
i <1 es oe
ae. age.
: annie: 1
AoC tae ie |
tee, Dis ‘sa tin 108 Se |
ee ete! OF sdon
Cl) Be OG
eet a.
ae ee Ra) 160,"
“ban EELS: Rowen st, a
s i. "ae bag Anpi i
see: a ey) alee , Lee
a
Digest. ste 10. ele
i gt ie ami, eae 2h (se are, ‘e z |
‘3 6, Pe ; "2 ae S08 ome a eee “i
fe erst ule aon ob toa rs ccs ig
a AE
53
Seay Se20-S54 || July, Welw Soin Sasi ee oT Oot. | Tamlons
fms. OPG took 0.9 cuft. Bottom is coarse black sand. See I SW-3.
Sta. 3385-55. Aug: 23; ~33°°50" Oo"; 11a° 3ef es; In 65
fms. OPG took 1.78 cuft. Bottom is fine sandy mud. See V-5.
Sta. 5386-55. Aug. 25. 33° 50' OO", 118° 34! 48", Im 100
fms. OPG took 0.44 cuft. Bottom is fine sandy mud. See V-8.
Sta, 2587-55. Aug. 25. 36° bl’ 59% Ile 37% LO". im 50
fms. OPG took 0.31 cuft.e. Bottom is coarse sand and shell. See
I W=22.
Steals SoSe-ooian Aus S40 156° Se" OI") Mee 54" 4e"s) lam 40
fmse OPG took 0.65 cuft. Bottom is coarse sandstone. See I W-20.
Siva SoCO=oo AUR. 250) 1550 be. OS mllg cn sel osthmaimmae
fms. OPG took 0.635 cuft. Bottom is coarse sandy mud. See I W-16.
Sine co90-55—) huge 25. 955° 52 05" IB Ns0 OOM sinuses
fms. OPG took 0.88 cuft. Bottom is green sandy mud. See I SW-10.
Sta. $391=-55. Aug. 25-6 35° 54! OB 118°736 t 00" . In 30°
fms. OPG took 1.57 cuft. Bottom is coarse sandstone and gravel.
See I W-1l.
Sag GEOR. Ne, BBs Bye teil) Iso Bi oA abel Sis) ©
fms. OPG took 1.57 cuft. Bottom is coarse sandstone and gravel.
See I W-14.
Spas ooS= oben AUeseos | Ooo 54" O2N \ qigO) S4armon: alam
fms. OPG took 1.57 cuft. Bottom is coarse gravel and green mud.
See dt W-19.
Sraqmsoso4=oo Aue. 2osunSs° 56" I4Nl ming? Sam lar ewaimn 52
fms. OPG took 0.68 cuft. Bottom is gravel and green mud. See
I W-12.
Sta. 3395-55. Aug. 23. 33° 56’ 15", 118° 30' 00", In 24
fms. OPG took 2.00 cuft. Bottom is sticky black mud. See
I NW-8.
Sta. 3599-55. Aug. 25. 33° 521 os", 118° SOM aps ines 5O
fms. OPG took 2.58 cuft. Bottom is fine green mud. See IV-8.
Sta. 5400-55. Aug. 25. 36° 50? 30", L1s” S77 |O6"s) in 220
fms. OPG took 2.85 cuft. Bottom is green mud. See V-21.
Sta. 3410-55. Aug. 30. 33° 40' 20"; lis° 468! a8". Im 4e8
fms. OPG. Bottom is fine mud. See VI-ll.
Sta. 5411-55. Aug. 30. BS" past SO, qqg® Ser Ol", an 4377
fms. OPG. Bottom is fine See VI-10.
oO
Spaesaie=so Anew s04 | saa 240 Sos die. en 04". in 4ag
fms. OPG. Bottom is fine mud. See VI-12.
i
faut oat
serie ca owe
“a8 at “og .
ine bor ane ie
at ope:
1. eae he ;
ae Kata. Aiken: Nene + |
ee Gant. Mee Ne! lage |
a 208 HW I a8 . werotebane |
ie beat Wey \ge Maer’,
located ae eek eae ie
ie te at noo rox.*
Pyor<We T ext 4k oe
rea a oe Hi beget
lateyasy bas cupsepaat
a!
ae we nee ine ae
Po Notetidbotis fae ‘apodebnee |
che | ie rns ‘Seth og0"
bu Shdie sage dovard Gexmoe at
aa ia is ngs Pees en tae! oes,
| ek bas penn ba a ere oe
} ha ' Sh eo ah és i
Beton maw’ 1@ ae | per | [ jaca
f Oe ¥S oe8 VS Okuc. roth, ne lcs Gas
. A Cr sib pee ire lige ps
OSs wh) 4 hao nee Pett «
Rel pee. miei
Bawbai . "eR. Bk CRE Pe ne
ee ie i hee eee Hons * nl ce ft si ‘mnt
VED Mah Pease aa, MEN, ie a . ae cen
see nero
Sta. 5478-55-
fms. OPG took 0.25
Sta. 3479-55.
fms. ORG took 1.119
Sta. 3480-55.
fmse OPG took 1.19
fi W-l.
Sta. 3481-55.
fms. OPG took 2.52
Sta. 3482-55.
meio OLG book aie Silt
See I NW-2.
Stae 3483-55.
fms. OPG took 1.80
I W-3.
Sta. 3484-55.
fms. OPG took 0.44
Sta. 3485-55.
fms. OPG took 0.51
DiGale 4486-55.
fms. OPG took 1.44
Sta. 3487-55.
fms. OPG took 0.75
Sta. 3488-55.
fms. OPG took 1.57
Sta. 3489-55.
fms. OPG took 1.57
Sta. 3490-55.
fms. OPG took 0.63
Sta. 3491-55.
fms. OPG took 1.63
Sta. 3492-55.
fms. OPG took 1.19
Sta, 3493-55.
fms. OPG took 1.19
Stae 6494-55 °
fms. OPG took 2.68
Sta. 3495-55.
fms. OPG took 0.635
USNSSC DAN oS. de.
Bottom is black sandy
15;°° 380° 55' 05", 118”
Bottom is black mud.
Us SSO) So" dom. Teo
Bottom is light beach
amige
See I
MeeomSoe, Sora ls
Bottom is mud.
15.
54
ite Oe. | Aig AL)
mud. See I SW-4.
PAS Sn atials (5
See I SW-2.
eHSe USs etial 17/
sand. See
26 20 ie rneas
NW-1.
SD Gay aw Se ol ea aie) |
Bottom is coarse gravel and black mud.
5 eS Ss omoote Olly mamas c
Bottom is black mud and sticks.
156835) Sor OSM miele
Bottom is fine black mud.
ALi)
Bottom is fine mud.
14 16s Gal Bow, ane?
Bottom is fine black mud.
15. 330 55' 49", 718°
Bottom is fine black mud.
Ue) SU (li/ay alalie\”
Bottom is green mud.
bin SS> BAY 40" ee
Bottom is green mud.
Sess Sat Ogt. dace
Bottom is green mud.
Ws, Boo BAU ane aie Bie Gye
Bottom is green mud.
1S uessou54! sso. tee
Bottom is black mud.
fo)
15. 33 569 24", 118°
Bottom is green mud.
USeuNSSou Sat) 42%, ise
Bottom is green mud.
WS5eqiSs Sols", Lise
Bottom is green mud.
PAM EXE IT = Vabrays aly!
See
BY base, Ala 15)
See I W-2.
SW-5 °
PAS OVENS) Abio\
AS MOOPTG » Abel
OM Bal
I NW-5.
28!
See
Se) Taal
I W-5.
es!
See
Agi okra
SW-6.
27!
See I
See I SW-8.
Se enealora
I W-7.
29!
See
Onl iba
I NW-6.
29!
See
BAO | abi
I NW-7.
291
See
GON 5) in
a NW-9.
30!
See
33° 531 36", 118° 27! 35". “In 20
See I
ae
See I W-4.
14°
See I NW-3S.
16
25
25
bal eyil
26
ah
1)
al
a she 18, ¢
{
7 hy
ane. aes eke |
at: fh
i nantiat apes f tee oye
Va
Ak 2h RR UR ROE
OE alae a banieh bem cig
a : : . : a 2B & i pt i ie ie Lu ite on ach i b “ cif i aly elk he 3 l
Re laude yen Lae vate aan (et aed
: hag. vas act Mi 1ay hein
nue foe se a ee a aes
ee tes Sere ey 6 a
oY uf iil wbkite meee
Mey § 4. pei Oe
(a8 We A Lal passa ies
998
EY W) be
yet at "HO A ‘Be Sot
A= WBe 98k
cee
“at 1g38
KOS san" eo rr)
r sia ‘
‘ aa a eet ci
‘ ih ie { MM 33 (i 4 Nib
oe Nr bp mer, va ona ee .
a vf “ee WW | ont Barnet cage ang, mottos.
'®,
eo, Mpg epi ice aa an inl Bb. Bh
eee ci T ne he agers hata banks
vino" Ale Cate x
2 wee
55
Suaeo496=555 | Sepe M5 1350154" Qi" 118° 29' 46", In 28
fms. OPG took 1.19 cuft. Bottom is green. See I W-8.
Sta. 5497-55. Sep. 15. 33° 54! Ha i sakes” eyo) aS Stray fa
fms. OPG took 1.50 cuft. Bottom is green mud. See I W-10.
State S498 =55., Sopemlonn coOgvoc! 14, 118° 28' 16", “In 42
fms. OPG took 1.0 cuft. Bottom is green mud. See I SW-9.
SraeeZO47=4een Aprile Mose G00 dem 118° AN Sey metro,
fms. OPG not measured. Bottom is gravelly rubble. See II-sub 2.
: (@) 4
SEau4slG=s6e dune 19s) S4° 00) OOte is S920" 5. times,
fms. OPG took 0.81 cuft. Bottom is sticky green mud. See III-‘7a.
Sta 2olg-56) dune 20. so 56" a7", Wg s5" ces imesens
fms. OPG took 0.65 cuft. Bottom is green silty ?o0ily mud. See I W-17a.
Sta. 4319-56, Juné 20; 33° 55? 38", 118° 34 11". ~-In 91
fms. OPG took 1.63 cuft. Bottom is sticky green mud. See I W-19c.
Sta. 4320-56. June 20. 33° 54! HM Lig] S415 Ts tiny ee
fms. OPG took 1.26 cuft. Bottom is sticky green silty mud. See
I W=-19b.
Stas 4sel-56.- June 20, 33° 5a" 3O") Img. Sa" Is" tm 4
fms. OPG took 0.75 cuft. Bottom is bedded mud stone. See I W-19a.
Sta. 4322-56, June 20. 33° 53! AON = AMSG GSS OTt a elnas5
fms, OPG took 1.19 cuft. Bottom is glauconite coarse and fine
gravel. See I W-17b.
Sta. 4525-56. June 20. Seo HT ABs 118° 33' 10", “tn’38
fms. OPG took 4 liters. Bottom is shale covered coarse rock and
sand. See I W-15a.
Sas ASCE Anas Boo “SS Su we a aso 0 oly, aga Ge
fms. OPG took 1.19 cuft. Bottom is coarse glauconite sand, (coarse
to fine). See I W-12d.
Sta. 4325-56. June 20. 33° S4t Sat. ies GAO Cel, iia Bao
fms. OPG took 1.88 cuft. Bottom is medium and coarse green
glauconite sand. See I W-12c.
Sta. 4326-56. June 20. 33° 54! BU WUE Bal O77, Iba Ge
fms. OPG took 0.63 cuft. Bottom is coarse green sand. See I W-l3a.
Stas 4527-56. June 20. 55° 55" 3a", Iis> 33" 02") in 39
fms. OPG took 0.81 cuft. Bottom is coarse green sand. See I W-15b.
Sta. 4328-56. June 20. 33° 55' 39", 118° 31' 58", In 32.5
fms. OPG took 0.67 cuft. Bottom is coarse green sand. See I W-12b.
Stawn 4529-56.) dune 2Or) 9Soo 55) 37"), 1187) 3050! | ines
fms. OPG took 0.06 cuft. Bottom is green and black silt. See I W-9a.
i ew eh, Pn
: me i '
i i y i
a ee a ee
a ae SRR GROEN 6 2%
a ke ‘aa toe ai mtd Mea’
a - rane | he, Pde jevechiel ah Oe
ee” ha ae. hay wey Spite: Oe The oe |
iy het. wad ‘vba ae rt Wino to esr , aun
| ews
ns 7 ‘hae nt : "Be ¢ nf Noa ie ii Mg n
" Demet coh” pace Maal
Cn ee
om rs Bi hie i Veen gan
- Hey th nl hive vgn”
igie by
7” re = :
= Ae oH nit A te
ind E)gee°.. tu qtte'
vf ., eon ity
honk PET tag) Pay
bi a io f ae o aod Din a
. Se. at PF res a
¥, - aoe Ted + as ab de
i nd
7 Lie ‘ Dit
bids ale Oe: eras
"vO Ԥ hE iat ew a hi ld nena y
x
(>
am
=
Bs;
=
o
>)
id UAL ay '
ae Mi 4 ~~ ' : ‘ : i ;
femme ey see Pr te ee eo OME ah Se aq ng
7 inde, Se) +. a {} Khe i ari i Me oye id, One us u mat
Ce ¥ por - OO Pitta ss ee Cha ase f
a et 09) GRABS Pat No hues 5 no-Nan oe och os *% aac
aT ne Bs i Bu: hate
; rus, BATS kt
es
oe te
iJ une Y ‘
. : A lai
ti hee ; AYY eS.
We if , ah My en q Bi 1 is
ey 1 ‘ P Woe : woe ty = A z=
re ibe ral? } Se” 6 eA } tints rales Hoke ih de fa sot ‘two: ae. oy
- Lig eae, ; . fbf deans
b twa Nee 08a. . bs bey lu! .aear sai
Raat ua Sos aN aot We ete oc... atty a oj et
oy
fas . a)
+) = : me k re
ve) A Py TA ite rims mine Hr: '
i ey eetacn me
WE 10S a pt ie ae et
(et Aas ie A £4 ery Fanees Cae be sea :
56
Sta. 4330-56. June 20. 33° 54! Bo". Ue SON SAM ey cine sit
fms. OPG took 0.65 cuft. Bottom is dark to black muddy silt.
See I W-10a.
Sta. 4331-56. June 20. 33. 53" BAS aa BO GAM aa 0) 8
fms. OPG took 0.56 cuft. Bottom is black muddy silt. See I W-9b.
Sta. 4332-56. June 20.°°33° 527 ZeeMs IASI THOM NON © ay teal
fms. OPG took 1.51 cuft. Bottom is dark green to black glauconite
sand. See I W-lla.
Stan2sss-5o uni dune 20s 1 SS°0u5et 4o" niece) Simpet sn a lniese
fms. OPG took 1.19 cuft. Bottom is dark green to black glauconite
sand. See lI W-l4a.
Sta. 4334-56. June 20. 33° 56° So" dec SerOot. s timueen>
fms. OPG took 0.06 cuft. Bottom is dark green to black glauconite
sand. See I W-12a.
Sta 4se5-560 0) duneie0., So- 55! 56 lg ol son 55% ea mimes
fms. OPG took 0.635 cuft. Bottom is green muddy sand. See I W-10b.
Stas 4448-56, June 28. 35° 54" 00". I1e° Sa" OO". mim 10
fms. Baited lobster trap. Bottom is packed mud.
Sta. 4449-56. June 28. 33° 54! 42", cuss a eel ona a
fms. Baited lobster trap. Bottom is packed mud.
Sta. 4450-56. June 28. 33° 54! 40", 118° 27! 49", In 17
fms. Baited lobster trap. Bottom is packed mud.
Stas 445-566, June ee. So 54° 1a", Tse 720 o4' Se ime eons
fms. Baited lobster trap. Bottom is packed mud.
ee
oe
‘ eae , or ae
iy Ptemneinss cia t
a a ey
He
Bae it oq. 024 cae
pesincs ionte ast: oe sbi ‘ant
a am gt nti i? aba
we % y abogt
“ante aiew es a4
oe at ee oa ee Soe ae TN. Bh.
adbi-w x pak” = ren BS ‘al bade
es con Os ae O'R
ie ey ceacaaong Os
serra Serr (hae
»bnte auoad’
"eg Patt Wom | SS ae
Si bevoag 6! "Wo7308
5 Ves Ass: fae vba) “as a
; bateac bestpag ;
57
List of samples by Zones (I to VI) with cross
reference to Station number of the VELERO IV
ip EY egos
J etodo oe tw (0 ,
58
List of Samples by Zones I to VI, and Serial Numbers,
with station numbers of the VELERO IV:
Zone I.
extending west from Hyperion, arranged according to increasing
I W-1 to 22, with 40 samples, is a transect
distance from the outfall,
at 3480
at 3484
at 3483
at 3486
at 3489
at 2993
at 3492
at 35496
at 2994
9a at 4329
9b at 4331
10 at 3497
10a at 4330
10b at 4335
OONOOK WWE
Zone I.
I SW=-1 to
west from Hyperion.
1 at 2992
2 at 5479
5 at 5220
Zone Ie
1 at 3481
2 at 3482
5 at 5487
Zone II-l to 9, represents the shallow shelf, to 50 fms.,
11 at 8391
lia at’ 4332
12 at 3394"
12a at 4334
12b at 4328
1léc at 4325
12d at 4324
13 at 2995
l3a at 4326
13b at’ 4327
14 at 3392°
l4a at 4333
15 at 3195
15a at 4323
16 at 3389.
17 at 2996
17a at 4318
17b at’ 4322
18 at 3194
19 at 3393
19a at 4321
19b at 4320
19¢ at’ 4319
20 at 3388
21 at 2998
22 at 353587
10, is a transect extending south-
at 5478
at 5485
at 3490
at 2991
NO ow
8 at 3491
9 at 3498
10 at 3590
I NW-1 to 9, is a transect extending north-
west from Hyperion.
4 at 3219
5 at 5488
6 at 3493
in the vicinity of Redondo Beach.
1 at 2788
2 at Sl61
sub 2 at 4047
at 3162
at 2722
at 2194
at 3165
Oo wk di
7 at 3494
8 at 3395
9 at 3495
7 at 2359
8 at 2193
9 at 2560
59
Zone III-1 to 16, represents the northern part of
Santa Monica Bay.
Tat 5218 7 at 5203 12 at 3002
2 at 3200 7a at’ 4316 135 at 3003
5 at 5213 8 at 5209 14 at 3004
4 at 3208 9 at 3001 15 at 3005
5 at 5210 10 at 5205 16 at 3006
6 at 3206 ll at 3204
Zone IV-1 to 9, represents Santa Monica Canyon, in 51
to 400 fathoms.
ate 2go7 5 at 3179 8 at 3399
2 at 5181 6 at 3178 Oat Sal 7
5 at 3000 fl lw PAINS) 10 at 3176
4 at 3180
Zone V-1 to 37 represents Redondo Canyon, in 51 to
410 fathoms.
imate co 13 at 2149 25 at 2150
2 at 35163 14 at 23561 26 at 2792
6 at 2192 15 at 2148 27 at 3168
4 at 2727 16 at 2724 28 at 3174
5 at 3385 17 at 23561 29 atl 2562
6 at 2726 18 at 2190 50 at 2723
7 at 5164 19 at 2562 ol at 5169
8 at 5586 20 at 2189 o2 at 2474
9 at 2789 21 at 2727 od at 5171
10 at 2990 22 at 2793 54 at 3175
Pat 2191 25 at 3167 55 at 2728
12 at 2558 24 at 2151 56 at 3170
57 at 51735
Zone VI-1 to 14, represents the deeper areas of Santa
Monica Basin.
1 at 2791 6 at 5020 11 at 3410
2 at 2620 7 at 2965 12 at 3412
5 at 2794 8 at 2970 13 at 2963
4 at 3019 9 at 2971 14 at 2964
5 ate 2729 10 at 5411
60
List of samples by depth, indescending
order, from 6 to 490 fathoms
nibaaoe wing # .
o) emnettatt .%
61
The following 18 samples came from 6 to 15 fathoms:
I SW-2 at 3479, in 6 fms.
Dit at ae8),) im 6 1/2) ima
I W-1 at 3480, in 7 fms.
I NW-1 at 3481, in 7 1/2 fms,
I SW-1 at 2992, in 9 fms.
II-1 at 2788, in 9 1/2 fms.
IIi-2:at 5200, in -10-fms.
I SW-3 at 3220, in 10 1/2 fms.
I NW-4 at 3219, in 11 fms.
I SW-4 at 3478, in 12 fms.
1 ete BILL, sta ae A sane
II-3 at 3162, in 12 1/2 fms.
I NW-2 at 5482, in 13 fms.
II-4 at 2722, in 14 fms.
I W-3 at 3483, in 14 fms.
I NW-3 at 3487, in 14 fms.
Ti — Sai Ooo Lou tms\.
I W-2 at 3484, in 15 fms.
The following 14 samples came from 16 to 25 fathoms:
I NW-5 at 3488, in 16 fms.
I W-4 at 5486, in 17 fms.
I NW-6 at 3493, in 17 fms.
II-5.at- 2194;°in-16-18- fms.
I NW-7 at 3494, in 19 fms.
I SW-5 at 5485, in 20 fms.
Ly
Jaa bE
eet at ab
Ra. 32 8 -
62
I W-6 at 2993, in 21 fms.
I NW-9 at 3495, in 21 fms.
I SW-7 at 2991, in 22 fms.
EI=6 at 6165, in 22 fms.
I W-5 at 3489, in 23 fms.
I NW-8 at 3395, in 24 fms.
III-4 at 3208, in 25 fms.
I SW-6 at 3490, in 25 fms.
The following 42 samples came from 26 to 50 fathoms:
I W-7 at 3492, in 26 fms.
I W-10b at 4335 in 26 fms.
I W-8 at 3496, in 28 fms.
I W-9a at 4329, in 28 fms.
I W-12a at 4334 in 28.5 fms.
I W-9 at 2994, in 29 fms.
Tit—5 Vaitesel0, ino) vims'.
I W-11 at 3391 in 30 fms.
I W-9b at 4331 in 30.5 fms.
II-7 at 2559, in 31 fms.
IITI-6 at 5206, in 31 fms.
I SW-8 at 5491, in 31 fms.
I W-10 at 3497, in 31 fms.
I W-10a at 4330, in 351 fms.
I W-lla at 4332, in 31 fms.
I W-12 at 3394, in 32 fms.
I W-12d in 4324, in 32 fms.
I W-17a at 43518, in 32.5 fms.
I W-12b at 4328, in 32.5 fms.
I W-13 at 2995, in 33 fms.
I W-15 at 3195, in 33 fms.
I SW-10 at 33590, in 33 fms.
I W-12c at 4325, in 33.5 fms.
III-7 at 3203, in 34 fms.
I W-14a at 4333, in 34 fms.
I W-14 at 3392, in 35 fms.
I W-17b at 4322, in 35 fms.
I W-18 at 3194, in 36 fms.
II-sub 2 at 4047, in 37 fms.
III-7a at 4516, in 37 fms.
I W-16 at 3389, in 38 fms.
I W-15a at 4323, in 38 fms.
I W-13a at 4326, in 38 fms.
II-8 at 2193, in 40 fms.
I W-21 at 2998, in 40 fms.
I W-20 at 3388, in 40 fms.
I W-19 at 3393, in 41 fms.
I W-19a at 4321, in 41 fms.
I SW-9 at 3498, in 42 fms.
II-9 at 2360, in 49 fms.
I W-17 at 2996, in 50 fms.
I W-22 at 3387, in 50 fms.
lee i
. r ti |
eG wre sf
; bes
;
iy
Ri
atest
r i |
3 Vs Sa
’ | "
nae te N ae
" rie! a
i i i ‘i
+ i ry f |
| ha UT
64
The following 15 samples came from 51 to 100 fathoms:
Pit SvatyoZzO9), ino”, ims.
Wolk eiia B728)5 Jaliol Sys) seu} +
V-2 at 31635, in 60 fms.
WOS) Ghg Zale 5” alial Gly aaa
V-5 at 5585, in 65 fms.
V-4 at 2727, in 66 fms.
W625 B26 4 alia 4/0) seMnes.
Tii=9 at S00L, in’ 70) fms’.
V-7 at 3164, in 80 fms.
I W-19b at 4320, in 82 fms.
EIT-10) at 5205, in’ 88 fms.
V-9 at 2789, in 90 fms.
I W-19c at 4319, in 91 fms .
IV-1 at 2997, in 100 fms.
V-8 at 3386, in 100 fms.
The following 18 samples came yeh 101 to 225 fathoms:
IV-2 at 3181 in 104 fms.
V-10 at 2990, in 110 fms.
III-11 at 3204, in 115 fms.
V-11 at 2191, in 125 fms.
V-12 at 2558, in 125 fms.
III-12 at 5002, in 125 fms.
V-135 at 2149, in 129 fms.
IV-3 at 5000, in 150 fms.
V-14 at 2361, in 157 fms.
Vel6 at 2724, in 157 fms
65
III-15 at 5003, in 160 fms.
IV-4 at 3180, in
V-15 at 2148, in
V-17 at 2790, in
V-18 at 2190, in
IV-5 at 3179, in
V-19 at 5166, in
V-21 at 3400, in
The following 11 samples came
V-20 at 2189, in
III-14 at 3004,
IV-6 at 3178, in
IV=-7 at 2999; in
IV-8 at 3399, in
V-22 at 2793, in
III-15 at 3005,
V=-235 at 3167, in
V-24 at 2151, in
INYO) ENG SL 5) algal
V-26 at 2792, in
The following 15 samples came
V-25 at 2150, in
V-27 at $168, in
V-28 at 3174, in
V-30 at 2723, in
III-16 at 5006,
160 fms.
62 fms
TSO; tmste
186 fms.
ALISXO) saanlis} (5
196 fms.
220m nmst.
from 226
eeo fms.
250 fms.
250 fms.
250 fms.
Zou semsic
280 fms.
Aelia,
294 fms.
500 fms.
from 3501
510 fms.
515 fms.
ocd fms.
625 fms.
to $00 fathoms:
in 230 fms.
in 280 fms.
to 440 fathoms:
in 550 fms.
cy}
aes
fet),
aly heen
%
opt
we
Oyo. he
IV-10 at 3176,
V-29
V-51
V-352
V-34
Viel
VI-2
VI-3
V-33
vVI-4
at
at
at
at
at
at
at
at
at
2362,
3169,
2474,
3175,
2791,
2620,
3019,
3171,
2794,
in
in
in
in
in
in
in
in
in
in
The following 15 samples came
V-55
VI-5
VI-6
V-36
V-37
VI-7
VI-8
VI-9
VI-10
VI-11
VI-12
VI-13
VI-14
at
at
at
at
at
at
at
at
at
at
at
at
at
2728,
2729,
3020,
3170,
3173,
2965,
2970,
2971,
3411,
3410,
3412,
2963,
2964,
in
in
in
in
in
in
in
in
550 fms.
oof fmse
580 fms.
405 fms.
410 fms.
415 fms.
418 fms.
425 fms.
425 fms.
430 fms.
from 441
445 fms.
445 fms.
445 fms.
460 fms.
462 fms.
470 fms.
476 fms.
485 fms.
487 fms.
488 fms.
488 fms.
490 fms.
1 490 fms.
66
to 490 fathoms?
)
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aes te da orn ©
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Analyses of Samples
from Zones
a
67
to Vil
Ay
na
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The following stations in Zone I-W are analyzed: 68
1 at 5480, 2 at 3484, 5 at 3483, 4 at 3486, 5 at 3489,
6 at 2995, 7 at 5492, 8 at 3496, 9 at 2994, 9a at 4329,
9b at 4551, 10 at 5497, 10a at 4550, 10b at 4335, 11 at 3391,
at 4352, between 11 and 15 at 3257, 12 at 3394, 12a at 4334,
at 4628, 12c at 4525, 12d at 4324, 13 at 2995, 13a at 43526,
at 4527, 14 at 3392, 14a at 4333, nr 14 at 3542, between 14°
15 at 5559, 15 at 6195, 15a at 4525, 16 at 5389, 17 at. 2996,
aLpi4ol8, Do aby4se2) (lS abSl94; —19 at 6595, 19a at 4521),
at’ 4620, 9c at 4519, 20 atS5588, 2lvat 2998), 22eat 5587.
lla
12b
13b
and
17a
19b
Ag
beach sand, most of which failed to pass through the screens.
W-1l. Sta. 5480-55. In 58 feet. OPG took 1.19 cuft of greenish
animals were floated out of the debris in the laboratory.
Prochordate, Branchiostoma californiense- 2 individuals "
Echinoderms include: Amphipholis squamata-1, Ophiouroconis bispinosa-1
Crustaceans include: Lepidopa myops (sand crab)-5 and amphipods- 14
Mollusks include: OQlivella-7, Nassarius-1, ?Aglaja -1
Nemerteans- 2 smaller
Nematodes- several
Polychaetes include?
SUM
intertidal areas.
screens. The an
Nephtys californiensis - 15 moderately large
Telepsavus sp. - -=.- 1 in tube
Hypoeulalia sp.- many
Dorvillea gracilis- many
Spiophanes sp.- 3
Glycera sp.- 1 small
Armandia sp.- 1 small
The
MARY.- The fauna is that of a shifting sandy beach extending into
The volume of organic materials is about 70 ml.
I W-2. Sta. 3484-55. In 100 feet. OPG took 0.44 cuft of fine
black mud with Bee odor, Most of the sediments passed through the
Echinoderms include
Crustaceans include;
Astropecten californicus- 1 medium sized
Amphiodia (Amphispina) urtica= 6
a small holothuroid
haps commensal of a maldanid), and some cumaceans
Mollusks include: a small living Conus californicus and a dead
shell of moon snail
Nemerteans- a few small only
Nematodes- some
Polychaetes include larger individuals of:
Diopatra ornata- 1 larger
Nephtys caecoides= 2 or more
Nothria elegans~ 10 or more in thin, sand-covered tubes
Glycera americana- 1 3 and smaller individuals of:
Ancistrosyllis sp., Aricidea spp., capitellid, cirratulids,
Drilonereis, Eumida, Exogoninae, Goniada, Haploscoloplos
Harmotho® lunulata var., Laonice, Leocrates, Lumbrineris,
Magelona, maldanid, Nereis procera, Pherusa, Phyllodoce,
mals are diversified with polychaetes the most abundant.
a few amphipods, isopods, a pinnixid crab (per-
elongatus,
Podarke,
Prionospio pinnata and other kinds, Sthenelais, Syllis, Tharyx
and others.
ar ite ise Ls TOL Re nL aE
ae h) Ay Pen Ne
hs “anglers ens Wat “eas a unc
” 1 ae he eis eee sat ere oa
RSEP ah ee PeROR Fae, pOORS Tae RN
rose de ££) BRR oie dos YOsEr de eOt Re
HAN an HSE Geee OaRL tent fa EL: bee -Ee eau di
LOSTR UR BEI 4 2 Peer: hae da Pak (Ste Can
hi cwonsed «. Sba8 ies ot, PEGSa te Sh” RSS ee va
VheeS ta Vi’ (ORke ee ae O960 Ya wal AV LR hs) kag “00g
Rr ee ae ae CACHE ROLE Su BL): ROOD
866. Pa SE The ‘Oe: Gee ete CD. Che
ma , fie
J
dat cise’ Be De Si se sisiod bee ita rl ay” a heres
att. saftestas eat? Maonay EMG, Lites a ad S; Ht gig nae Wes
mG aio tio ha ahs ued mpl et > ay ho -Uvb-ped
cae it at BLib Letiayk: ae pio k tas BHO HOE a
pon iar
~“ " heed
Deanonitoes td ashen cee, gear wawee a ecaenG rh
Bk -ahogiiiqns Sin c+ Gato tiem) amie ee cn ty
* i4 ay aI Re 4! Y Pen : Rea pre 4
} 7 irk rae Hs 4 ef « aie. Fi
be ; Lerray yee
eae : eet Lee
CHa i ¢ Ferme aie
BNee ak ay cr 2
. ees, = ‘ j aii es ys Ge a i
oa |. | ia Di Voie eo
; mn Re ees rhe: "Be the
- k ; hs ogo Py Ms
Le os sy et eee
My ihame. l= Ge
Gueine aoeed yb ra aha Kole rs 20 gad oF iain
£ vas age Oo emarvoy eat #
t otatnetin 0
nS
Patt LAP e DP. dood HG dee COON bHboes.. path
BAY dinotd?: Seaarg oe LAee CAT To SHOR YROMa cnt eer
LAnabauds taom et? selseiay log sie ett Hav Th . ; ;
aa
-
Rice
) cy 2 ae me Bal
Ris aig SOLGM.
<
deo bininaly bq ehenehd hou ergs 98s A
2 chee Omics oe mnee: Ge. elias
bash. s base Bist Bal hehe: swing) ¥ it Wipe ae Leute eo Hebel
| | 2 LRG, oO OMt) he
Pee | (bite LAA wes, a\ <6
i aoe |
The GMb YS Pcd sagt 5 oo ont
rf f esate. #
Pye Sean Oa atom tok
“<4 Roy horaroo-onee gt Est Ce Cr eT aay aid
(to arabe tbah etiam Brie” hors
oR LE Oates
ebiiugarche —bkiietiqus gs sobl oth
oluolovaciast 0G Lace U Pearp ay gone,
Blreniudwn \eetmpooes gicoms 4 aM
SSDODOLIVAS \ paUONS— Sec |
ee (ae cee tia fonae $8 “wah al Geris9 vil ta,
= \ 8 dias
SUMMARY.- The animals are largely polychaetes of smalleP%inds. The
volume of organic materials is about 100 ml. )
I W-5. Sta. 3483-55. In 58 feet. OPG took 1.8 cuft of black
mud with sticks.
Echinoderms include 9 smaller ophiuroids, a very small asteroid and
2 moderately large Astropecten californicus
Coelenterates- a few small, resembling Harenactis (anemone)
Brachiopod- Glottidia albida- 1 smaller only ~—
Crustaceans include 2 caprellids and 13 or more amphipods
Polychaetes include larger individuals of:
Nephtys ?caecoides-1
Nothria elegans- 5
Phyllochaetopterus prolifica- 1 in tube
and smaller individuals of: Chaetozone, Eumida, Goniada, Haplo--
scoloplos, Laonice, Lumbrineris, maldanids, Nephtys, Nereis,
paraonids, Pherusa, Phyllodoce, Prionospio, Syllis, Tharyx,
and others.
SUMMARY.- The representatives of these species are smaller in size
than those more remote from the outfall, and represented by
fewer individuals. Their volume is about 115 ml. The largest
individual is Nephtys caecoides, the most conspicuous is Nothria
elegans.
I W-4. Sta. 5486-55. In 111 feet. OPG took 1.44 cuft of fine
black mud with HoS odor. The screenings consisted of much biological —
debris, ee alanis algal bits, broken tubes and a few shelly frag-
ments, in all about half a liter.
Echinoderms include:
Astropecten californicus- 1
Amphiodia (Amphispina) digitata- 2
Amphipholis squamata - l
Crustaceans include: $5 ghost shrimps, about 24 amphipvods, 2 pinnixids
Nemerteans- a few smaller
Mollusks include: several Tellina, an Aglaja, and other smaller kinds
Polychaetes include?
Brada maldanids
Caulleriella Nephtys
Chaetozone Nereis procera
Cossura candida Nothria elegans
Eumida ~ Pectinaria californiensis
Glycera americana (large) Pherusa (6, some ovigerous)
Goniada = PhyliIodoce
Haploscoloplos Prionospio pinnata
Laonice — uy lepsavus, vices Anak
Lumbrineris Spiophanes (in silt-covered tube)
Magelona Thar yx
‘and others
SUMMARY.= This sample is characterized by its preponderance of poly-
chaetes. The largest individual is Glycera americana, the most
abundant is Nothria elegans. Its volume is estimated at 70 ml.
I W-5. Sta. 6489-55. In.1468 feet. OPG took 1.57 cuft of
green sticky mud with slight HeS odor. The screenings consist of
many arenaceous foraminiferans and much diversified life.
ie si. gt nt bet Cali. 58 ieodear4 ca
\ Rey} pats al J
meee Ly wa ou thas 4G i tone
4 aban: se) i
Bhog Pane
a cia ies
te cpl ioe r 6 hm orga oe
Far caeyt “aBIaADL Ae ie Gale
ee aD Af Ve soho get eae 4.
soeeaa a t ai basin hs omy a
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ecle as a6tlane eds set aeds
2. fed meme oo oa avg a
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ae
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i
enh? ys Sto Se.2 aoow! fF
: ar #
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oa ae {ilecte Fe? 8, CR Sesns Gonos. as
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7 or
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4 i
oo a “BOB A!
ae a de
Meixtonio se aboatdowe £3. tyode) .rqninde wae
: ji Wea 2 ey PBI at eo
Ue ede ee
AMoty mollane recto Sav”,
7 a
‘ Sarees eueaee ae
e s -
eiacet inte tt
(avorsalve & Sane yt) (apie th, ay
me. as unt DECB On Riess
stat
a en EM '
(ens betevoo-dl {2 mE) Borktageeg
aed e orc es
meld ie. sdoenehitoremg asl ith, bad tsed ddan wa jhchans atid
ie AE, OMT
i
Pap Ot vansoliens susgvly af lasbivibas dae,
\ ee Car ae eae ;
m4 a 4 ea ee ok ae ¥ . ¥ b
Mis /OT ga Devenites al sarc: és iy ‘guess,
Oo 9 Tis Nal ae Ot kay 4teet pay: ia . GiB
To) Petecnon racine tce, as: tobe Goo Katrad 5e
IWELE Bedi Loker hb sou bee Sw L as
Echinoderms Be nen: 70
Amphiodia aephispine digitata- 7
Amphiodia "rugosa"- 4 (aesciine name is unpublished)
Amphioplus SHeseuancunes 2
Amphipholis ~ squamata-_ 19
Astropecten californicus- 2
Crustaceans include some amphipods, ostracods, and nebalians
Nemerteans- several, ovigerous in tubes of Sthenelanella
Mollusks include: Cadulus, smaller pelecypods, small Aglaja and
other gastropods
Brachiopod, Glottidia albida- a few smaller
Enteropneust- 1 ©
Polychaetes include:
Aglaophamus
Amphicteis scaphobranchiata
Ancistrosyllis
Cossura candida
Drilonereéis
Glycera americana americana- 1 large
Haploscoloplos el elongatus
Magelona
maldanids with species in at least 3 genera
Marphysa, resembling conferta- 3 larger
Nephtys, smaller kinds
Nereis procera- some mature, undergoing metamorphosis in tubes
of maldanids
Nothria elegans
Pectinaria californiensis- 12 or more
Pherusa Sternaspis- 1 larger
Pholo¥ Sthenelais _
Pilargis Sthenelanella- 5 in tubes
Prionospio pinnata Terebellides- 1 larger
Scalibregma Tharyx —
Sphaerodorum- 1 ovigerous and others
SUMMARY.- Species best represented are polychaetes. The largest one
is Glycera americana; the most conspicuous is Pectinaria. The
volume of organic matter is estimated at 98 ml.
I W-6. Sta. 2995-55. In 109 feet. OPG took 1.38 cuft of dark
green mud. Most of the silt and detritus passed through the screens.
Echinoderms includes
Astropecten californicus-1 Amphiodia urtica - 10
Amphipholis squamata - 5 - Amphioplus hexacanthus- 3
Amphiodia occidentalis - 3
Crustaceans include a ghost shrimp and an amphipod, Pontharpinia sp.G.
Nemertean- 1
Mollusks include a chaetoderm and a few other kinds
Polychaetes include:
Aricidea Nephtys ?ferruginea
Euclymene- many Pectinaria californiensis-many
Glycera americana- 1 larger Prionospio spp.
Lumbrineris Sternaspis- 1 small
Marphysa, resembling conferta-1 and others
SUMMARY.- The largest is Glycera americana; the most conspicuous
are Pectinaria and Euclymene. Volume of organic content is
estimated at 110 ml.
washes 3 dame da ee ao. ete
eC pegs ape a ob Sek en
1 op Re Ab ag ak en an Toren M6 FS oases
Boond dh aleadgqeonadon prbogver useage ARM, “pieae
Sen 3 LAE Be | |
Pay ce he F , ‘ / wy a bee
fo Senos ae 3 -a.Seaimaa me
TRUTB L [= eS hy 5 fps ood rca ; ie via
Sodus ts
opal
ano troagzel oft ..angesdorcog prs botnexe mah ae
Cr Let fra gle bot. al’ eons fq anp 6 J#om, Sap ce
“w hde AG. 48.1 1ae earee ae ae
2
SSBB Ao Hw Boul xood BO (paot, OL ‘tes Agadtipheres
“eneetoe end rigvo ttt hoeag ees iareb ti #E0b bale 28
OL = Ce a Ee eae terion, re
qi —Biniina oHROs z BCC eee ies
. ae
phe Se
aed lp bia tocacts: OF «hogdiiqas rte $e agneRnee. <
™
“
woviate IO,
bit sf idan is ve BoP ae ete
Soil Sity oe? Fe i clays
Viera ae STOLL es Be! WAAL LS Fi
ro; EO OLOe ORO en. fe woprad
(Same eee a “i
ataniy” 57 “age hibo, i
‘muhaintuanod Je 0 ste } Rae of tied PUCi Nes
#2. Preiser of Rast fi | RESIS, enemys Ly ee.
71
I W-7. Sta. 5492-55. In 155 feet. OPG took 1.19 cuft of black
sticky mud. The screenings are largely small bits of broken shells
and sandy tube fragments and arenaceous foraminiferans.
Echinoderms include:
Amphiodia urtica- 123
Amphioplus - strongyloplax-4
Amphipholis squamata - 61
Crustaceans include:
ghost shrimp- 6 small
ostracods, largely brown- 83
cumaceans- 12
nebalians- 2
isopods: Gnathia-4 and Anthurid- 2 large
amphipods include:
Ampelisca- 1 or more
sauoearctide 0
Lysianassidae with: Aruga sp.-2, Podoprionella- -l, _Lepidepecreum
phoxocephalids with:
Heterophoxus sp. A-4 Pontharpinia sp. E-29
Metaphoxus sp. A- 4 Pontharpinia sp. J-4
pinnixid crabs- 9
pycnogonid- 1
smaller nemerteans- some
Mollusks include:
Chaetoderm=- 2
Scaphopods: Cadulus fusiformis- 46, Dentalium neohexagonum-shells
Gastropods: Aglaja- 2 smaller, Eulima- 5, Nassarius- l,
turbon shells=- about 29°
Pelecypods (identified by Dr. Myra Keen):
Acila castrensis- 1
Compsomyax subdiaphana- 12 or more
Cooperella subdiaphana- aL
Crenella sp.- fragment
Hiatella arctica- 2
Leptopecten monotimeris- 1
Lyonsia cali lornce:
Macoma yoldiformis
Macoma sp. - re
?Myse ella sp.- “By sone
Parvilucina spe- 3 juv., length 3 mm.
Periploma d discus= 4
Saxicavella pacifica - 1
Tellina buttoni - 2
Tellina “Idae - 1
Thyasira barbarensis - 3
Sea pen- 1 small only ~
Brachiopoda- Glottidia albida- 2 small
phoronid=- 1 or more
Enteropneust=- 3, of which 1 is small and 2 are larger
Polychaetes include:
Amaea occidentalis
Ammotrypane
Ampharete
Ancistrosyllis
Aricidea spp.
8) Soa in eae
Hoste ho Phas ei at, a0
lta: cadaed 16 fc Ets ,
opiead @. bist ae
ae
wien sitet | ated 2 de “x bot
wt TSUIUBRCRR e. Tame Lut cqee
a ft (areeat pre’ «tl et ‘
SL to at
L
- .
: an
Rt a ofr: & ad pce ye
i :
es:
Jf Lao & oh iaval
negara t efi a bits ta Sts ad YT Motte tbe
' tv
i 4
Brada- 3
larger capitellid
slender capitellid
Chaetozone- several
Chloeia pinnata
Cossura candida
Diopatra tridentata- 1 large
Drilonereis
flabelligerid, unknown
Glycera americana- 1 large
small Glycera
Goniada
Haploscoloplos elongatus
Harmothos lunulata var.
Laonice- 3 larger
Leocrates
Lumbrineris spp.
Magelona
maldanids
Marphysa, resembling conferta-4
Megalomma, in tube
SUMMARY.- This sample is highly diversified.
the most conspicuous are Pectinaria
The organic volume is estimated. at 250 ml.
is Glycera americana;
and Amphiodia | urtica.
i W-8. Sta. 5496-55.
In 172 feet.
72
Nephtys ferruginea
another nephtyid
Nereis procera
Nino
Onuphis nebulosa- 6 or more
Pectinaria californiensis - 224
Pherusa
Pholo’
phyllodocid juv.
Pilargis
Poecilochaetus- 2 juv.
Polyecirrus
Polydora dora- in irregular tube
popeacee io pinnata- 12
Prionospio, nr. malmgreni-some
Rhodine- in capes
Spiophanes
Sternaspis
Sthenelanella
Terebellides
The largest individual
OPG took 1.19 cuft of fine
green sticky mud with arenaceous foraminiferans including Alveolo-
phragmium, Go&sella and other kinds. The Screenings were almost
entirely animals.
Echinoderms include many small smooth red ophiuroids and a tiny
asteroid.
Crustaceans include:
stalked barnacle- cluster attached to onuphid tube
pycnogonid=- 2; pinnixid crabs- 6; ghost shrimp-1l
cumaceans= 523; nebalian- 23; ostracods = 85 or more
gnathid isopod- 3 males and 2 females; flabelligerid isopod-1
amphipods- more than 100
parasitic copepod on thorax of Terebellides (polychaete)
Mollusks include:
chaetoderm=33 Cadulus - many;
and pelecypods
Polychaetes include:
numerous smaller gastropods
Aglaophamus maldanids
Anaitides Marphysa, cf. conferta
Aricidea Nephtys spp.
Asychis ?lacera
Ceratocephala c Co americana=2
Chloeia pinnata =- 9
cirratulids=- many
Cossura candida,
Eumida
Glycera americana -2
Glycera capitata | co
Goniada = 3
Nereis procera
Nino’- 4 ovigerous
Onuph is nebulosa
Paraonis sp Sppe
Pectinaria californiensis -40
Pholo
Pista, in tube
Prionospio pinnata - larger
Prionospio sppr several
in tubes
Haploscoloplos elongatus -2 Rhodine
Harmotho§ lunulata var. Scalibregma- ovigerous
Leocrates Spiophanes
Lumbrineris bicirrata Streblosoma
Magelona pacifica - larger Terebellides- 8 or more
OF RR KK a ed
ASS - ginnotmeot se
otis erie he Bysshe:
~ "Sh sedsnivg \ oioeoncs
itok- lsozantan hed a) sie
“Teedus at's
hist va
3 ie silonelenstte | i
- oe 86k. “t etl “uiLenaR ee,
: ma obi ad 6 tat sale adios, ye ep
Gath tbat Heese et sporitinarite rd as
ptusnds oot ong iqavoo Vrouw sh f
witht es oe beatin ya aentior bit ait ah
Sail
Das tran e Tito efib: ede Ho. teak Ott at) aioe
Pie gaibe font enaréd.talmers 5% ihe seRcere athe
Y PeROR A :
eTow 235 fasetos ent yahoey id cuihet Pe.
poke a ‘bu Bbinxcldge: bet. ALOOmE Skaae i
OSs Bt Aequitas re Hedoas on nesta, eth
Teams st aoutee ) 28 “aint: rf Stet i
pe “grom tor 964 eboositso pay ;
f-bogwe % BESMESAE CHE nates g cee oe,
oe ene
a, feteadoyfod) 24 sbi iLeder
ghovorsesy i ewes ce aoteoan,
‘abiaabt be
BonOTHOD «h9. PAY
i es ape Jaga “
: Bie go's
endtagive >
“aspluden at. as
Wan Bag ee tauothf aie a2)
ditt od
qpumet “we gage od
Leyeves sage Qe
redid cn pre
a
=
S
a
o
ol
=
3
is
ie
Ve
Others include:
Echiuroids - 23; Sipunculids - 43; Enteropneusts - 3;
a small burrowing anemone; Monobrachium colonies on
Axionopsis (a white clam); a large red ribbon nemertean
SUMMARY.- This is an enriched diversified sample containing many
species not found nearer Hyperion. The largest one is the
nemertean, the most conspicuous is Pectinaria. The volume of
organic matter is estimated at 285 ml.
EW-9. Sta. 2994-55. In 179 feet. OPG took 0.69 cuft of dark
sticky, hard packed mud.
Echinoderms, with small disks measuring 5 mm or less across, include:
Amphiodia (Amphispina) urtica - 441
Amphipholis squamata - 64
Astropecten californicus- 1 juvenile
several holothurians
Crustaceans include:
a pinnixid crab; stalked barnacle; many brown and white ostra-
cods; some isopods; cumaceans; a pycnogonid; many
amphipods with phoxocephalid species identified:
Heterophoxus sp. A.- 5
Metaphoxus sp. A- 19
Pontharpinia sp. E- 21
Pontharpinia sp. J- 18
Mollusks include a chaetoderm and numsrous small soe LELO! kinds
Polychaetes include:
many smaller spioniform and cirratulid kinds
Pectinaria, Phojo&, Lumbrineris, Magelona, and others
SUMMARY.- The sample, though small, is representative of a diver-
sified mud bottom fauna.
I W-9a. Sta. 4529-56. In 200 feet. OPG took 0.06 cuft of
green and black silt. The screenings consisted of about a liter
of black sand with numerous smaller animals, especially smooth red
ophiuroids, smaller mollusks and many smaller polychaetes.
I W-9b. Sta. 4531-56. In 193 feet. OPG took 0.56 cuft of
dark green to black muddy silt. The screenings consist of about
two liters of solids, with many smooth ophiuroids, shelled mollusks
of different kinds, tubes of animals and many diversified species.
Echinoderms include many ophiuroids—
Mollusks include many smaller bivalves, a medium sized Polynices
and other kinds
Polychaetes include:
Chloeia pinnata
Lepidasthenia virens
Lumbrineris bicirrata
other lumbrinerids
Meeonone
?Notomastus
Pectinaria californiensis
‘and other kinds
Sipunculid- 1 larger; Nemertean- 1 yellow-striped
SUMMARY.- This bottom is characterized by the presence of Onuphis
nebulosa, many smooth ophiuroids, the large sipunculid, an
the diversity of its kinds of species.
erie enisatnae” Pee:
gat a) ‘eno hee ehradeainte aaa I
HS omirfoy ext 4 when ‘et \siiseotgense: coor
: Bipot OBS hits bod sit tthe ek
Laapeeets oe “Vabadeee)
bah to eis (6.0 se ae
tebitlont paeonoe | anes a: hs ee arp
i ‘ Ss H ; cps ao Bo a - a @ ike ¥
ofhaeet: ‘me i ceo Hes oage
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gedils suode to Bedeienco agnladenae Me awit) &. tec re
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saetendoylog “tot Laie: Kasia Bee, ate tol Demme.
Yo Fito" Siro Wood po" Chea’! SSL ease BES: .adee
Wusda ho deiadoo Ganineaxoe’ onl alia ehinan ahaerd .
SSuputilow bel lésie (eb kom ised rs bonia, Renee ot tw, sei LoR™
AH 0O0e bert haters “ribo Bie afaaker ito RENT. on
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74
I Wel0. Sta. 5497-55. In 188 feet. OPG took 1.5 cuft of green
sticky mud. The screenings retained many stellate foraminiferans,
Rhabdammha abyssorum_and other arenaceous kinds.
Foraminiferans, partly identified by Dr. Orville Bandy, include:
Cibicides lobatus (d'Orbigny)
Planulina ornata (d'Orhbigny)
Rhabdammina abyssorum Carpenter
Robertina californica Cushman and Parker
Textularia abbreviata d'Orbigny
Textularia schencki Cushman and Valentine
Echinoderms include:
Amphiodia (Amphispina) digitata - 531
Amphipholis squamata - 157
Amphiura arcystata - 2
Ophiura lutkeni - 1
Ophiothrix spiculata = an arm only
several small holothurians
Mollusks include:
Cadulus - some living and dead shells
Chaetoderma = 5 small
bubble and turbon shells
Aglaja § Nassarius 3 Pandora; and others
Crustaceans include:
stalked barnacle - 1 larger
cumaceans = about 40, with 2 or more species
pinnixid crab =- 1 juvenile
sand crab = 1 juvenile
amphipods - 114 or more, including a larger Ampelisca,
a caprellid, and phoxocephalids:
Heterophoxus sp. A - 9 Pontharpinia sp. E - 29
Metaphoxus sp. A = 20 ontharpinia sp. Y- 1
pycnogonid - 1 3 isopods with at least 4 species - 12 or more
ostracods, mostly brown, a few pale and sculptured kinds - 90
small sipunculids, in rays of stellate foraminiferans-- many
nemertean - in tube of Eunice
hydroid, Monobrachium, on small white clams=- many colonies
Polychaetes include:
Nephtys cascoides = 1 larger and posterior end of another
Chloeia pinnata-
er
Magelona
Muphis nebulosa - 5 long stiff tubes
Prionospio pinnata
Prionospio nr. malmgreni
Pectinaria californiensis = 90 or more
and many other smaller kinds
SUMMARY.= The largest individual is Nephtys caecoides; the most
conspicuous are Amphiodia digitata and Pectinaria califor-
niensis. The volume of organic matter is estimated at 500 ml.
I W-10a. Sta. 4530-56. In 198 feet. OPG took 0.65 cuft of
dark to black muddy silt. The screenings consisted of about a liter
of dark sand and animals of many diversified kinds. The most numer-
ous are smooth ophiuroids.
Mollusks are represented by a larger Modiolus, Cylichna, and others.
Polychaetes include?
Anaitides Pectinaria californiensis
Glycera papillated Pherusa
Marphysa resembling conferta Prionospio pinnata
Nephtys and other kinds
Lumbrineris spp.
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I W-10b. Sta. 4335-56. In 166 feet. OPG took 0.63 cuft of
green muddy sand. The screenings consisted of less than half a
liter of solids, mostly animals, of which not quite half was oph-
iuroids of smooth red kinds. A small Pyrosoma colony was taken.
Crustaceans include many amphipods, ostracods, cumaceans and soiie
isopods (one Gnathia carries many juveniles in a brood pouch)
Mollusks include: many smaller gastropods, clams of various kinds
Polychaetes include:
Ammotrypane Haploscoloplos elongatus
Aricidea, ovigerous Lumbrineris cruzensis, ovigeruus
Chloeia, many juveniles Pectinaria californiensis- few
Glycera robusta =- 1 large Pholos§, ovigerous
ara only record in the samples) Tharyx, ovigerous
and many others
SUMMARY.- The sample is dominantly ophiuroids; the largest indiv-
idual is Glycera robusta.
I W-11. Sta. 5591-55. In 180 feet. OPG took 1.57 cuft of green
coarse sandstone and gravel and some arenaceous foraminiferans,
Echinoderms ecm ;
Amphiodia (Amphispina) urtica - 654
Amphipholis squamata - 505
Astropecten Californicus - 1
holothurians - 5
Mollusks include scaphopods, pelecypods, gastropods, with none large
or conspicuous.
Crustaceans include many cumaceans, a few isopods, many brown’ ostra-
cods and many amphipods, with phoxocephalids:
Heterophoxus sp. A -'7 Pontharpinia sp. bh - 44
Metaphoxus sp. A ~36 Pontharpinia sp. J - 26
Polychaetes include:
Pectinaria, with many tubes
a large empty tube of Panthalis
many smaller kinds in the genera Glycera, Pholo&§, Sphaerodorum,
various kinds of spionids, paraonids, cirratulids, and others.
SUMMARY.=- The sample is characterized by its numerous smooth ophiur-
oids and the diversity of its other animal kinds.
I Wella. Sta. 4332-56. In 168 feet. OPG took 1.51 cuft of
dark green to black glauconite sand. The screenings consisted of
about 9 liters of coarse shelly rubble with bleached and broken shells
of larger animals not present in the sample, such as pecten shells,
large Bursa, Conus, murex and turret shells, tubes of Protula, valves
of Lacqueus.
Living animals include:
Ophiura llitkeni and other echinoderms
Epitonium and other mollusks ay he dee
polychaetes of many kinds of which the largest are:
Mesochaetopterus, sigalionids, Glycera, Pherusa, Pista
SUMMARY.- The present fauna appears to be a replaced one, with no
single kind outstanding in number or size.
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76
Between I W-1l and I W-15. Sta. 3257-55. Dredged. In 150 to
174 feet from a rocky bottom. The screenings consisted of about 2
liters of rubble with many kinds of larger animals. Most of the
soft-bodied and smaller kinds were lost. The sample retains
encrusting gorgonian coral, bryozoans, attached solitary coral,
small colonies of white sponge, many clumps of vermetid mollusk,
possibly Vermicularia, smaller sea urchins, shelled mollusks in-
cluding the genera Nemocardium, Nuculana, Pecten, Leda, and others.
Polychaetes are represented by tubes of Onu uphis nebulosa, Phyllo-
chaetopterus prolifica, Pista elongata, Owenia, Pherusa, Ver-
miliopsis, and others, also a small Aphrodita.
Broken shelly fragments of larger animal species suggest that
these kinds have been replaced or their shells carried in.
I W-12. Sta. 3394-55. In 192 feet. OPG took 0.68 cuft. Bottom
is gravel with green mud. The screenings retained fragmented dead
moon snails, pectens, brachiopod and other shells, a living anda
dead shell of Terebratalia (brachiopod).
Echinoderms include:
Astropecten californicus- 1 juv. as arcystata - 1
Amphiacantha amphacantha - 1 Ophiopsila californica - 1
Amphiodia urtica - 118 Ophiothrix spiculata - 1
Amphiodia digitata - 29 Ophiura lutkeni - 1
Amphioplus squamata - 63 holothurians- 2 small
Crustaceans include many amphipods, many cumaceans, many brown ostra-
cods and some white linear kinds; some slender white isopods,
and a pycnogonid. Phoxocephalid amphipods are;
Metaphoxus sp. A - 23 Pontharpinia sp. E - 23
Pontharpinia sp. B =-4 Pontharpinia sp. J - 23
Mollusks include a chaetoderman and some smaller shelled kinds
Coelenterates: some small hydroids on a Conus shell; 2 small anemones
Brachiopod- Terebratalia - 1
A sipunculid anda phoronid
Polychaetes includes
Ammotrypane - 3 Onuphis nebulosa - some
ampharetids Panthalis pacifi pacifica- 1 ovigerous
Aricidea Paraonis
small capitellid =- some Pectinaria californiensis
Chaetozone ?corona Pista
Chloeia . pinnata- 168 aS) Ahehyc Prionospio nr. malmgreni-46
Chone ?mollis = 7 Prionospio pinnata - 5
Drilonereis - 3 Rhodine
Euchone Sabella nr. crassicornis
Glycera americana - 2 juv. Sphaerodorum minutum - 2
Lumbrineris spp.=- 6 Sphaerodorum, another sp.
maldanid - 3, in sandy tubes ternaspis sp.
Myriochele gracili - several Sthenelanella uniformis - 14
Nephtys sp.- 2 Terebellides
and many other smaller kinds, of various genera and species
SUMMARY.= The animals are largely smaller kinds and individually
very numerous. The volume of organic matter is estimated at
150 ml.
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I W-12a. Sta. 4334-56. In 179 feet. OPG took 0.06 cuft of
dark green to black glauconite sand and silt. The screenings consist-
ed of about a half liter of animals and little debris.
Echinoderms include a few ophiuroids and a smaller holothurian
Crustaceans include colonies of Scalpellum (barnacle), amphipods,
cumaceans, isopods, in considerable numbers
Mollusks include smaller gastropods, especially Cyliehna, Bittium,
Aglaja, smaller pelecypods, and others
Glottidia albida- 2, the largest measures 12 mm long
Polychaetes include:
Ancistrosyllis, ovigerous Nothria elegans
Artacamella Chloeia pinnata, many juveniles
Lanice, in long tubes Pectinarla californiensis
Lumbrineris bicirrata Pholo&®
Magelona Terebellides- 2 with copepods
Nephtys spp. Thalenessa _
and many other kinds of smalier polychaetes
SUMMARY.- The largest animal is Nephtys, the most abundant is
Chloeia; the bulk of organic matter is composed mainly of
smaller polychaetes.
I W-1l2b. Sta. 4528-56. In 227 feet. OPG took 0.37 cuft of
coarse green sand, some black gravel and broken shells. The screan- |
ings consisted of nearly 2 liters of animals and sand, together with
broken shells of mollusks such as Polynices, Crepidula, pectens, also
Lacqueus, Protula and other shelled animals.
Echinoderms include many smooth ophiuroids and about 8 smaller holo-
thuroids.
Coelenterates Monobrachium on small bivalve shells
Scalpellum ( (eaceactsy on tubes of Phyllochaetopterus prolifica
Mollusks include many smaller shells of diversified kinds
Polychaetes include:
Artacamella Phyllochaetopterus
Chloeia pinnata Sphaeordorum minutum
Lumbrineris spp. Sthenelanella
‘and many other kinds of smaller species.
SUMMARY.=- The bulk of animal materials is less than half a liter;
it consists largely of ophiuroids and annelids of various kinds.
I W-12c. Sta. 4325-56. In 200 feet. OPG took 1.88 cuft of medium
and coarse green glauconite sand. The screenings consisted of about
2 liters of coarse to fine sand and animals.
Echinoderms include about 50 smaller ophiuroids and a holothuroid
Crustaceans include:
Scalpellum in clusters, attached to ends of onuphid and Phyllo
chaetopterus tubes
many amphipods, isopods, cumaceans, a large ostracod measuring
1.3 mm long, and a dark brown tortoise-shelled ostracod
Nemerteans include 1 or more pale with light brown longitudinal streaks
and several smaller ones
Monobrachium, 2 colonies on a small clam
Mollusks include:
scaphopod- 1, measures 22 mm long ; Polynices, Tellina, Bittium,
Thyasira, and Axionopsis
Polychaetes include:
Chloeia pinnata- many juveniles
Ceratocephala americana
Chone ?mollis- 1 larger measuring 52 mm without crown, and a smaller
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Drilonereis - 3 78
Glycera americana - large, parasitized by many nematodes, pro-
jecting from posterior Segments at parapodial bases
Glycera capitata - 3 small
Hyalinoecia juvenalis - 1 not mature
Tsocirrus 1 longiceps - 1 in coarse gravelly tube
Lepidonotus- 1 juvenile
Lumbrineris cruzensis - 12 small
Lumbrineris bicirrata - 1 larger
Lumbrineris latreilli - 1 nearly as large
Onuphis “nebulosa- many in coarse tubes, in all about half a liter
Pectinaria californiensis - about 12
Pholo&- more than 2
Pherusa capulata - 1
Pista, resembling small P. cristata - 1
Rhodine
Sabellaria cementarium- 1 in coarsely cemented tube
Schistocomus- 1 large
sigalionids, of more than one genus- about 6
Spiophanes missionensis - 2
Terebellides - 1 or more
and others
SUMMARY.- This sample has many species characterized by an unpolluted
shelf or shallow slope fauna. The largest one is Isocirrus and
the most abundant is Onuphis nebulosa. The volume of organic
matter is estimated at 400 ml.
I W-12d. Sta. 4324-56. In 195 feet. OPG took 1.19 cuft of
coarse glauconite sand and fine black sand. The screenings consisted
of about 8 liters, half of which was coarser red to dark sand, the
other fine black sand.
Echinoderms include holothurians of 2 kinds,- a white with rows of
papillae and a pale lavender, each with 2 individuals
Mollusks include 2 living shells of Pterynotus, some Amphissa, Thya-
sira and others
Corynactis (red and white anemone)- at least 13, in rocky crevices
of larger gravelly rocks
A small Pyrosoma colony
Polychaetes include:
Brada - 1 Pherusa capulata - many
Megalomma = 1 Pherusa inflata - in U-shaped
Peisidice aspera = 1 ~~ burrow
Vermiliopsis sp., on pecten shell
SUMMARY.- This fauna is characteristic of outer, sloping areas in
rocky habitats. The volume of organic matter is estimated at
250 ml.
I W-15. Sta. 2995-55. In 220 feet. OPG took 0.95 cuft of
coarse gray clay and sandy mud. The screenings are largely animals
of diversified kinds.
Echinoderms include:
Amphiacantha amphacantha - 2
Amphiodia (Amphispina) digitata - 37
Amphiodia psara - 1
Ophiocnida californica - 1
Ophiopholis bakeri - 1
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holothurians of two kinds, a dark purple, and a pale papillated
kind
Crustaceans- many amphipods, cumaceans and other kinds
Phoxocephalid amphipods:
Heterophoxus sp. A-1 Pontharpinia sp. Y-2
Pontharpinia sp. J-2
Nemerteans - several smaller
Polychaetes include many tubes of Onuphis nebulosa, a larger Chone
fmollis, and other kinds
SUMMARY.- The sample may be characterized for the presence of Onuphis.
I W-1l3a. Sta. 4326-56. In 254 feet. OPG took 0.63 cuft of coarse
green sand and some silt. The screenings consisted of nearly 8 liters
of coarse to fine sand, gravel and some animals, in addition to broken
mollusk shells, Protula tubes, slender sticklike pieces of ?Rhabdamina
(foraminiferan) and other biological remains.
Echinoderms include a few smaller smooth ophiuroids and at ieust one
individual of Ophiura llitkeni.
Crustaceans include a cluster of Scalpellum (barnacle) attached to a
tube of Phyllochaetopterus, many small brown ostracods, amphipods,
cumaceans and some isopods (with at least one Exosphaeroma).
Mollusks are entirely small and include caecid gastropocs, smaller
pelecypods of various kinds and perhaps others.
Coelenterates include a long whiplike gorgonian coral
Sipunculid- 1 larger
Polychaetes include:
Aphrodita- 1 measures 15 by 11 mm
Glycera americana - 1
Hyalinoecia cia juvenalis - 1 not mature
Onuphis nebulosa =- many in stiff, slender gravelly tubes
Pectinaria californiensis - some
Phyllochaetopterus us prolifica- some, with attached barnacles
Pailsiva
Sabellaria cementarium
Sthenelanella uniformis
ravisia
and others
SUMMARY.- The largest individuals are Glycera, sipunculid and Aphrodita;
the most conspicuous are Onuphis nebulosa and Phyllochaetopterus
prolifica.
I W-13b. Sta. 4327-56. In 249 feet. OPG took 0.81 cuft of coarse
green sand. The screenings consisted of about 8 liters of coarse to
fine sand, shell fragments and animals.
Echinoderms include:
Astropecten californicus - 1 large, measures 140 mm across the tips
of the arms and 28 mm across the disk
ophiuroids, smooth red kinds- not more than 50 individuals
Ophiothrix spiculata - 2 or more
Ophiura lutkeni - 1
holothurians- many, at least 2 kinds, a deep dark purple and a
paler, smaller kind
Crustaceans include stalked barnacles and many smaller amphipods, os-
tracods and other kinds
Mollusks include diversified smaller kinds including Volvulella, Cuspi-
daria, Nuculana and others
Phoronid- several stiff, slender tubes
peteds: rag, GERG p Fa satu ee * ee
one. oe a glstatinct
BzGHD Rayret & mer nisi 120. “Yo — ae pe erigi?
PabicunG Sh scoguerg 98 spt bentaeconsad: nie Tait ne ee
7
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perigee Yun 6H,0 xost es Syeeh eon. at. -aauaseh! ate
Ssegl{ oS ate we ‘o bothhens @yieeres ens 1 ails ene. Dae
Sodicaded oF Molpinpa we Pines Prod oa Dee Lav pt perk e ee ae
pas acti? a eg etic eng PC Bb es ray Te mad bs: pmediz alco’ | y ae
ra, rare pei hones Paotsokeld sesao Soa Cause
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‘ete bay ot snenae Mette eo Vo. Tae
pa 14 henostta qf slowonue) mello tn oR Pe ea Le ow Sha loar
geberingins dase nslte com orc SE Lame, Vena. -tuscsed St ees00 tote
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4 Soe eicwy Nosh qoeb ew ,ehnid Coast: tn i YAO Beyer tay
i i | bata? peak Cee! wets
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80
Polychaetes include:
Eteone- long slender, yellow in life
goniadid- lemon yellow in life
Isocirrus - in coarse gravelly tube
Magelona
Myriochele gracilis
Onuphis nebulosa - many in stiff slender tubes
Pectinaria californiensis
Pherusa capulata
Pherusa papillata
Phyllochaetopterus prolifica
Rhodine
Sabellaria cementarium, in coarsely cemented tubes
-Terebellides- ovigerous, with bright pink ova
Tharyx, with tesselated tubes
SUMMARY.- The largest individual is Isocirrus, and the most conspicuous
is Onuphis nebulosa. The organic materials comprise about a liter
of which Onuphis is about half.
I W-14. Sta. 5592-55. In 213 feet. OPG took 1.57 cuft of coarse
green sandstone and gravel, shelly rubble, broken bits of protulid tubes,
Lacqueus shells, dead solitary coral, mollusks shells and other biolo-
gical debris. The screenings retain very few living echinoderms or
mollusks; other animals are also much limited.
Echinoderms include a small lot of ophiuroids only, represented by
single individuals of Amphioplus hexacanthus, Amphipholis squamata
and Ophiopsila californica
Crustaceans include 3 amphipods, a few brown ostracods, a cluster of
stalked barnacle attached tu a tube of Phyllochaetopterus
Polychaetes include:
Chloeia pinnata Prionospio spp.
Cossura candida Sphaerodorum minutum
Harmotho§ Spiophanes
Lumbrineris spp. small terebellid, in gravelly tube
Magelona Terebellides- 1 mature
Onuphis nebulosa- 2 or more Tharyx
Phyllochaetopterus prolifica
SUMMARY.- All animals are quite small and reduced in number and kind.
Organic material is estimated at 50 ml.
I W-14a. Sta. 4333-56. In 212 feet. OPG took 1.19 cuft of dark
green to black glauconite sand. The screenings consisted of about 8
liters of coarser dark rubble, shelly remains and biological materials.
There are bleached or broken shells of animals not found living, in-
cluding Lacqueus, pecten mollusks, Protula and others.
Echinoderms includes
Astropecten - 1 small
Ophiura IUtkeni- 22
holothurtans- pale, with longitudinal rows of papillae
Crustaceans include 10 caprellids, 5 amphipods, a juvenile crab
Mollusks include:
Amphissa Eulima
Amygdalum Leda- 4 living
a small chiton Saxicava- in dead rock oyster shell
Epitonium Tellina- 2
and others
i
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echiuroid, perhaps Listriolobus- a larger and a smaller et
branching hydroid on snail shell, and stalk of a branching hydroid
Polychaetes include:
ampharetid Pherusa capulata - 18 or more
arabellid Phyllochaetopterus tubes with
Chaetozone stalked barnacle
Glycera capitata Prionospio nr. malmgreni
goniadid Prionospio pinnata
Hyalinoecia juvenalis - 3 tubes Sabellaria cementarium
?Isocirrus, in tube Scalibregma
Laonice Spiophanes
Nephtys Sthenelanella - about 14
Notomastus~- 1 large, ovigerous Terebellides
Onuphis nebulosa - about 12 Tharyx
Pectinaria californiensis - 7 Vermiliopsis, on black stone
SUMMARY.- The largest are Ophiura llitkeni; “the most conspicuous
are Ophiura, Onuphis, Pherusa. The volume of organic matter is
estimated as 20 ml or more.
near I W-14. Sta. 3542-55. Biological dredge, in 42 fms, on rocky
bottoms, Animals retained in the dredge on recovery included:
stalks of hydroids and encrusting bryozoans
sponges~- white with long spicules, and brown, Halichondria-like
solitary coral- several living individuals
a living Terebratalia; a cluster of stalked barnacle
Philine, a snail, and Saxicava arctica, in dead shell fragments
ascidians attached to stones
Polychaetes include:
Anaitides - 1
Autolytinae- a female sexual stolon
Nereis ?procera - 1
Pseudopotamilla, perhaps occelata - 1 or more in long,horny tubes
tubes of Phyllochaetopterus prolifica
syllid in brown sponge - 1
Vermiliopsis multiannulata - 1, in white ridged tube fully attached
to a stone
SUMMARY.- This sample is that characteristic of a rocky bottom, and has
been found similar to that on the leeward side of Santa Catalina
Island in rocky habitats, but has fewer specific categories.
between I W-14 and I W-14, Sta. 3539-55. Biological dredge, in
44 to 37 fms, on rocky bottoms. Animals retained in the dredge on re-
covery included:
Pyrosoma, measuring 6 inches long
Echinoderms include many epifaunal seaurchins, a few arms of ophiuroids
and 2 purple holothurians
Stalked barnacles; ostracods; cumaceans; isopods; caprellid amphipods
Listriolobus pelodes, an echiuroid
Nemertean
Enteropneust
Mollusks include:
Philine- 2 larger Nassarius
Amygdalum - 5 or more Polynices
Bittium Pseudochama (rock oyster)
?Macoma Tellina
and others
Steere ed | «ale
Hi, ' eee :
Pat (oan Fi AGES pa Sd ae ;
+ ee ae ee
a
c Peal ae
iy Pb ye Ke
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F ; = i, Cie Bate) ‘pi oe
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SRE eg et)
a small leech
Polychaetes include: 82
ampharetid Peisidice aspera
Anaitides Phyllochaetopterus prolifica
Aphrodita armifera polydoriid
Chone Prionospio ?pinnata - small
Drilonereis Protula superba- 2 long tubes
Exogoninae Schistocomus
Lumbrineris spp. Spiophanes
maldanid spirorbids, on dead mollusk shells
Megalomma, in tube Sthenelanella uniformis
Nothria conchylega Streblosoma
Onuphis nebulosa - many Terebellides
Pectinaria californiensis terebellid, resembling Lanice-3
Odontosyllis Vermiliopsis spp.
Tharyx in tesselated tube
SUMMARY.- This sample has, a mixed fauna, taken from rocky areas and
soft bottoms; Pyrosoma is usually pelagic.
I W-15. Sta. 3195-55. In 200 feet. OPG took only a small sample
of sandstone, shale, boulders and shelly rubble. The screenings con-
sisted of some ophiuroids, annelids and other smaller animals. The
fauna is that of a rocky association.
I W-l5a. Sta. 4523-56. In 240 feet. OPG took about 4 liters of
Shaley coarse rock and sand. The screenings consisted of about 3 1/2
liters of rocks penetrated by borers, with attached or encrusting
serpulids, bryozoans and other animals, 4 sea whip, perhaps Stylatula
and others. y
The shaley rocks were penetrated by burrows harboring Saxicava
arctica. In holes or on dark sides of the rocks are attached ser-
pulids of Vermiliopsis with 2 kinds of species, spirorbids of more
than two kinds. The rocks have projecting tubes of polychaetes, in-
cluding Phyllochaetopterus and Hypsicomus.
The rocky crevices or niches harbor small chitons, Lacqueus juv-
eniles, bryogZoans and a very flat tunicate. A small scale-worm,
Peisidice aspera, occurs in narrow runways.
I W-16. Sta. 3389-55. In 230 feet. OPG took 0.65 cuft of coarse
sandy yellow-green mud. The screenings consisted of coarse sand which
weighed 1440 grams, including many smaller diversified animals.
Echinoderms include?
Amphiacantha amphacantha - 6 Ophiura llitkeni - 4
Amphiodia (Amphispina) urtica- 46 Lytechinus anamesus - 1
Amphioplus hexacanthus - 2 ?Leptosynapta inhaerens - 1
Amphipholis squamata - 7 deep purple holothuroid - 3
Amphiura arcystata - 2
Crustaceans are diversified with many amphipods, ostracods and other
kinds.
Mollusks include diversified smaller kinds.
Polychaetes include;
Aglaophamus dicirris Fabricia
lane beaaete Glycera capitata
Anaitides Goniada
Aricidea Haploscoloplos elongatus
Ceratocephala c. americana Harmothoe lunulata var.
Drilonereis maldanid
Lat. 8 f
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ates :
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donadas
8 ty il
Nephtys
Nothria, perhaps elegans
Onuphis nebulosa, tubes
Paraonis
Pectinaria californiensis
Pholoe
Phyllochaetopterus prolifica
and others
83
Prionospio, nr. malmgreni - many
Prionospio pinnata
Scalibregma
Sternaspis
Sthenelanella uniformis
syllid
Travisia
SUMMARY.- This is a diversified bottom, characterized for the presence
of many kinds of smaller animals.
,£W-17. Sta. 2996-55. En 300 feet.
gravel, stones, and coarse materials.
OPG took 0.61 cuft of sand,
The screenings consisted of
nearly the entire lot and contained many animals.
Echinoderms include:
Amphiodia occidentalis - 1
Amphipholis squamata - 44
Amphipholis pugetana = 9
Odontaster crassus - 1 juv.
Ophiacantha diplasia - 3
Crustaceans include:
caprellid amphipods = @
phoxocephalid amphipodss
Heterophoxus sp. A=3
Ophiacantha quadrispina - 1
Ophiopholis bakeri - 3
Ophionereis eurybrachiplax - 9 large
Ophiura ltitkeni = 1
Sclerasterias heteropaes - 5
Paraphoxus sp. A-1l
Sipunculids - 1 larger and several smaller
Leech= 1 small
Polychaetes include:
ampharetid = 1
Anaitides = 2
Aricidea = 1
Armandia = 4
capitellid = 5
Chone = 1
Cirratulus = 2
Drilonereis = 3
Eunice - 2
Buphrosine = 2
Glycera = 2
Goniada = 5
Laonice = 3
Leocrates - 6
Lepidasthenia - 2
Lepidonotus = 3
Lumbrineris = 4 or more
Magelona = 2
Nereis = 2
Notoproctus = 3
Paraonis =- 1
Peisidice - 6
phyllodocid -2
Pherusa = 2
Pholoe = 3
Phyllochaetopterus prolifica- some
Prionospio pinnata - 1
Prionospio, other species
sabellariid, fragment
Sphaerodorum = 2
syllid, 2 or more species
terebellid juveniles
Tharyx =- about 8
and others
SUMMARY.- The largest individual is a sipunculid; the most conspicuous
is Ophionereis eurybrachiplax.
matter is 110 ml.
The estimated amount of organic
I Wel7a. Sta. 4318-56. In 206 feet. OPG took 0.65 cuft of green
silt, ?oily. The screenings consisted of a little less than a liter of
animals and little debris.
Echinoderms, weighing about 9.4 grams include?
Ophiura llitkeni - 2
smaller red kinds = more than 100
holothurians = a deep purple and a pale lavender
Crustaceans include clusters of stalked barnacle and smaller amphipods,
isopods and other kinds
ee e——————eEEeEeEeEeEeEeEeee
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84
Mollusks include few individuals of Cardiomya, Tellina, Leda, Thyasira,
Axionopsis (without Monobrachium), Nemocardium, and others
Nemerteans = several smaller
Polychaetes includes:
Artacamella Owenia
Chloeia = many juveniles Pectinaria californiensis
Drilonereis Pherusa (papillate
socirrus Pholoe
Laonice Pilargis berkeleyi
Lanice Scalibregma
Lumbrineris cruzensis Sternaspis
.Magelona Sthenelanella
Myriochele gracilis Terebellides, with pink ova
Onuphis nebulosa Thalenessa
SUMMARY.= All of the animals are smaller in size but diversified in
kind. The estimated amount of organic matter is 100 ml.
I W-17b. Sta. 4322-56. In 241 feet. OPG took 1.19 cuft of
glauconite coarse and fine gravel and sand. The screenings consisted
of nearly 8 liters of gravelly and sandy materials, including animals.
Echinoderms include:
Ophiothrix spiculata = l
holothurians = several purple
a very long sea whip, Stylatula
burrowing anemone, perhaps Cerianthid
Crustaceans include amphipods, many brown ostracods, and others
Mollusks include’
Chaetoderma a small Polynices
Chama Thyasira
shells of Amphissa and others
Nemerteans = a larger pale, with longitudinal yellow stripes
Sipunculid
Polychaetes includes
?Anaitides spp. Prionospio spp.
?Ampharete Streblosoma
Chloeia pinnata = few Tharyx
Lumbrineris spp. serpulid tubes
Onuphis nebulosa = many and others
SUMMARY.=- The largest animal is the sea whip; the most conspicuous is
Onuphis nebulosa.
I W-18. Sta. 3194-55. In 217 feet. OPG took only a very small
sample from a stone, shaley and sandy bottom. Some animals attached to
rocks include sedentary tunicates, rock oysters and smaller annelids.
The bottom is presumed to be similar to adjacent rocky areas.
near I W=-18. Animals snagged on lines of current meters, included
large individuals of Astropecten californicus with commensal annelid
species, Podarke pugettensis and Arctonoe sp.
I W-19. Sta. 3393-55. In 244 feet. OPG took 1.57 cuft of coarse
gravel with green mud. The screenings contained many calcareous
oat
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85
foraminiferans, especially Buliminidae. The silt was unusually colored
reddish brown or coffee colored when washed.
Echinoderms include:
Amphiacantha amphacantha - 1 Lytechinus anamesus - 1
Amphiodia urtica - 7 Spatangus californicus - 1
Ophiura ilitkeni - 2 holothurian - 1 juvenile
Crustaceans include numberous amphipods, isopods and possibly others
Phoxocephalid amphipod, Pontharpinia sp. J-2
Mollusks include diversified smaller pelecypods and gastropods,
with Tellina and Acila.
Echiuroid: Thalassema - 1 larger
Polychaetes include:
Aricidea Laonice
smaller capitellids Paraonis
Chloeia pinnata - juveniles Pherusa capulata
cirratulids Pholoe
Glycera - juvenile spionids, smailer kinds
oniada Tharyx
Isocirrus and others
SUMMARY.=- The largest animal is Thalassema, the most conspicuous are
various kinds of polychaetes. The estimated amount of organic
matter is 125 ml.
I W-19a. Sta. 4521-56. In 257 feet. OPG took 0.75 cuft of bedded
mud-stone. The screenings consisted of about a liter of materials,
with considerable fine coffee-colored silt, tiny mud balls, a larger
ghost shrimp, and other animals weighing not over 10 grams.
Echinoderm: a larger Ophiothrix spiculata
Crustaceans include a ghost shrimp, some amphipods, brown ostracods
and cumaceans.
Polychaetes include juvenile Chloeia, Glycera, small Lumbrineris,
Nephtys and others,
SUMMARY.= The animal contents were few in quantity and diversity.
I W-19b. Sta. 4320-56. In 492 feet. OPG took 1.26 cuft of sticky
green silty mud. The screenings consisted of a little over a liter
with much shelly coral and other calcareous debris, especially old or
bleached fragments of Allopora (hydrocoral), tube fragments and other
biological rubble. The animal population is diversified.
Echinoderms include some smooth red ophiuroids
Mollusks include smaller shells of Axionopsis, a tiny Dacridium,
caecids, and others
Monobrachium, a coelenterate, is fairly abundant
Polychaetes include?
Pectinaria californiensis - 50 to 75; the largest measure 45 mm long
a giant capitellid
SUMMARY.= The largest animal is a capitellid, the most conspicuous is
Pectinaria. The bottom appears to have been earlier populated
by a hydrocoral association and more recently replaced by a mixed
fauna.
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86
I W=19c. Sta. 4519=56. In 575 feet. OPG took 1.63 cuft of sticky
green mud. The screenings consisted of about a liter which was almost
entirely animals of various kinds. When silt and sand were removed, the
contents weighed 157 grams.
Echinoderms include?
Brisaster townsendi - 2, the larger measures 31 x 25 mm, the smaller
WO SSMS I/F Gana
Amphiacantha amphacantha - 7
Amphiodia digitata - 59
-Amphioplus strongyloplax - 2
phipholis squamata - @
Crustaceans include numerous amphipods, ostracods, and cumaceans
Hydroid, on living shells of Acila (pelecypod)
Monobrachium = 2 colonies on pelecypod shells
Mollusks include:
Axionopsis Nemocardium
Acila Nucula
Bittium Tellina
Chaetoderma Thyasira
and others
Polychaetes include:
Aricidea
ampharetid
capitellid
Chloeia - 3 larger and 30 or more smaller
Cossura candida
Drilonereis
flabelligeriid, in old gastropod shell =- 35 or more
Glycera ?capitata - 4
Goniada
Harmothoe lunulata var. = 5
Lumbrineris bicirrata - 1 larger
Lumbrineris cruzensis = 3 or more
Maldane = 1 or more, in mud tubes
Melinna - in tube resembling that of Maldane but slenderer
Nephtys ?*ferruginea = 2 or more
Pectinaria californiensis - about 50, weighing 18.” grams; the
longest measure 45 mm and average length is 50-35 mm
Pholoe = several
Poecilochaetus = juvenile
Prionospio nre malmgreni = 2
Prionospio pinnata = 1
Rhodine = in tubes
Spiophanes ?missionensis - several in silty tubes
Tharyx, with tesselated tubes = many, some ovigerous
SUMMARY.- The largest animals are Lumbrineris bicirrata and Brisaster
townsendi; the most conspicuous are Pectinaria californiensis and
ophiureids. The estimated amount of organic matter is 500 ml.
I W=20. Sta. 3388-55. In 250 feet. OPG took 0.635 cuft of coarse
sandstone, yellow-green nodules and biological debris. The screenings
consisted of considerably shelly debris, especially entire and broken
shells of scallop and augur shells, broken brachipods and. Protula tubes.
meee so Mv LOD hee Ma gee) CVA oa ~ ete)
PAAR GR Cokie Ai Ge ee. hel, Beit Cel, ey iat
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: pt * oye ha ot piel
Ar Rv MRA Sie ly tia ald
374648 4h 7 sa i oe ia: Rl ek, ed it jo kant a eri : bak as :
brseoacien bye phew Ms the OL ig Tt
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a aaite ees
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87
Echinoderms include:
Amphiodia (Amphispina) urtica - 3
Leptosynapta -—2ujuve
tichopus californicus - 1 very large
Crustaceans include many amphipods, brown ostracods, cumaceans and others
phoxocephalid amphipods:
Heterophoxus sp. A-2 Pontharpinia sp. J-14
Phoxocephalus sp. A-=2 Pontharpinia sp. Y-1
Mollusks include many smaller gastropods and pelecypods
Echiuroid - 1 moderately large
Sipunculid - 1 brown, moderately large
Polychaetes include:
Chloeia pinnata - many juv. Rhodine fragments
Harmothoe lunulata var. scalibregma
Pectinaria californiensis various spioniform annelids
Pherusa capulata Sthenelanella uniformis
Pholoe and others
SUMMARY.- The largest is Stichopus californicus, followed by the
echiuroid and sipunculid; there is no single species conspicuous
for abundance, The estimated volume of organic material is
L5Ommilys
i W-21. Stas 2998-55. In 265 feet. OFG took 0.57 cuft of black;
clayey mud, with large friable clumps. The screenings consisted of
little besides the animals, which are richly diversified.
Echinoderms include:
Amphiacantha amphacantha - @ Amphiura seminuda - 2
Amphiodia digitata ~ 8 Ophiura 1lUtkeni - 3
Amphiodia urtica - 25 Astropecten californicus - l
Amphioplus strongyloplax = 1 Lytechinus anamesus - 1
Amphipholis pugetana = 7
Crustaceans include many amphipods, cumaceans, ostracods and others
phoxocephalid amphipods?
Heterophoxus sp. A=4 Pontharpinia sp. J=-8
Metaphoxus sp. A-6 Pontharpinia sp. Y-1
Polychaetes are very numerous, diversified and characterized by
Pherusa capulata and Pectinaria californiensis.
SUMMARY.= The estimated volume of organic matter is 110 ml.
I W-22. Sta. 3387-55. In 310 feet. OPG took 0.51 cuft of coarse
sand, shell and sandstone. The screenings consisted of stones and gravel
somewhat covered with white deposit, some stones lightly sprinkled with
dead shells of spirorbids and biological materials.
Echinoderms include:
Amphiodia digitata - 1 Ophiopholis bakeri - 1
Lytechinus anamesus = 3 olothurian, brown papillated - 1
Crustaceans include a few amphipods and ostracods
Mollusks include caecids, smaller gastropods and pelecypods
Encrusting bryozoans on stones
Polychaetes are entirely small and include:
cirratulids Paraonis
Glycera Placostegus, tubes attached to stone.
zoniadid Spionids of several kinds
Lanice in tube spirorbid tubes on stones
Magelona Sthenelanella uniformis
nereid sylli
onuphid Vermiliopsis om black stone
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shndvoeled: hea £ae MEQUtG aa ‘oe 4. ois id cH hac acy Cork 4
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88
SUMMARY.= None of the animals is conspicuously large or abundant.
The fauna has the appearance of a replaced one, with individual
numbers sparse and perhaps at the fringe of their distributions.
The estimated volume of organic matter is 90 ml.
Summary of Zone I, western sector, numbers W=1 to 22.
The sample from W-1 is from a shifting beach sand characterized
by sand worms, Nephtys californiensis, a sand crab, Lepidopa myops,
and diversified smaller kinds. The Timi todePallatdoastanneianees
presented by W=2, characterized by Nephtys caecoides, Nothria elegans
and other kinds of smaller polychaetes. Species are limited in
number and size. Echinoderms, mollusks and smaller crustaceans are
either sparse or absent. A Pollution-Tolerant-Fauna is represented
by samples from W-3 to 5, and characterized by increasing numbers
and kinds of species and larger sizes of individuals; present are
Glycera americana, Marphysa nr. conferta, Nereis procera, and other
kinds of polychaetes, in addition to some smaller mollusks, and increas-
ing number of smaller crustaceans and some ophiuroids, or also smaller
individuals of Astropecten.
The Limited=Enriched=Fauna, represented by samples from W-6 to 12,
is considered limited for lacking some species known to occur in similar
areas that are not polluted. It is enriched for having unusually high
numbers of individuals (peaks of biomass). Thus, in one sample (W-7)
ophiuroids are represented by 3 species with 188 individuals, mollusks
by 23 species and 125 individuals, crustaceans by 19 species and
about 150 individuals, polychaetes by 46 species and more than 200
individuals, or in all 7 major groups with 95 species and 760 individuals.
The Unlimited=Diminished Fauna, represented by samples from W-13
to 19, has increasing numbers of kinds, but diminishing peaks (or none)
of biomass. This area is further characterized by having bottoms that
are largely gravelly, rocky or rubbly. The current fauna has the
appearance of a replaced one, with vestiges of a former one, re-
presented by bleached fragments of hydrocorals, brachiopods, larger
mollusks and other larger epifaunal kinds of animals. The species now
present are largely those in the sediments or capable of moving about.
I SW-1 Sta. 2992-55. In 60 feet. OPG took 0.5 cuft of hard packed
sandy mud. The screenings consisted almost entirely of polychaetes.
Polychaetes include?
Ampharete arctica - 1
parasitic arabellid = 1
Aricidea spp. = more than 50
cirratulids, including Chaetozone, Tharyx and perhaps others -
hundreds
Diopatra ornata = about 12 larger, in coarsely constructed tubes
ycera americana = 1 larger and 1 smaller
Haploscoloplos elongatus - 2 larger and several smaller
Lumbrineris cruzensis - several
Lumbrineris, other species
Nephtys caecoides - 2 larger
Nereis procera = more than 70, some undergoing epitoky in tubes
of onuphid
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89
Nothria elegans - 6 or more, in thin sand=covered tubes
Paraonis - many
Platynereis bicanaliculata - 6
Prionospio pinnata - 1
SUMMARY.=- The fauna is almost entirely polychaetes of limited kinds;
echinoderms, mollusks, smaller crustaceans and foraminiferan tests
are few or absent.
I SW-2, Sta. 5479-55. In 38 feet. OPG took 1.19 cuft of black,
well-packed mud with moderate odor of Ho5S. The screenings were almost
entirely animals and little flocculent debris.
Crustaceans include 1 amphipod, 2 brown ostracods, a few cumaceans and
2 pycnogonids.
Mollusks include 5 small living Polynices, a Nassarius, several small
Tellina and a mollusk egg-=string.
Polychaetes (all small except Nothria and Nephtys) include:
Aricidea Magelona
Armandia Nephtys ?caecoides - 1 larger
capitellid, perhaps Notomastus Nereis procera
Eumida ?sanguinea Nothria elegans - many, in tubes
Glycera Phyllodece, small spotted
Goniada Prionospio spp.
Haploscoloplos ?Telepsavus sp.
umbrineris Tharyx
SUMMARY.= The largest and most abundant is Nothria elegans; all other
animals are small. The volume of organic matter is estimated at
less than 60 ml.
I SW-3 Sta. 3220-55. In 50 feet. OPG took 0.9 cuft of coarse
black sand. The screenings consisted largely of polychaetes, a few
crustaceans and mollusks.
Crustaceans include:
amphipods = about 26 isopod - l
cumacean, very attenuate = 9 cancroid crab - 2 juveniles
brown ostracod = 1
Mollusks include several smaller gastropods and pelecypods
Glottidia albida - 5 minute
Anemone, ?Harenactis - 3 smaller
Nemertean - 1 larger and 6 smaller, perhaps more than 1 species
Polyclad = 1 small
Polychaetes include:
ampharetid - 3
Anaitides s-- 15 minute though mature
Ancistrosyllis - 1
Arabella =- 6
Aricidea suecica = 40
Aricidea, another species 4
Capitella capitata =- 60 or more
larger capitellid - 1
minute capitellid - 7
Chaetzone corona - 3
cirratulids of various kinds - many
* eit sy hedarebebuas: pests 20
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90
Diopatra ornata- 5 larger and 6 smaller, weight with tubes about
43 grams
Dorvillea articulata - l
Bumida = 1
Goniada = 5
Halosydna - 2
Haploscoloplos elongatus - 7
Leocrates = &
Lumbrineris cruzensis = 26, some ovigerous
Lumbrineris, larger species - 1
Magelona, pouched - 20 or more
Nephtys ferruginea - 6 larger
smaller Nephtys - 9
Nereis procera - 36 or more
Nothria elegans - 55 or more; the longest tube measures about 30
oO cm; total weight with tubes is 34.2 grams
Platynereis bicanaliculata - 6
Tharyx ?’parvus - 5
SUMMARY.= The largest animal is Diopatra ornata, the most conspicuous
is Nothria elegans. The sample is estimated to have about 45
species and 550 individuals.
I SW-4. Sta. 3478-55. In 78 feet. OPG took 0.25 cuft of black
sandy mud with a slight odor of H5S. The screenings consisted of less
than half a pint of materials, including a larger seastar and other
animals which were largely polychaetes.
Echinoderms include:
Astropecten californicus -1, measuring 85 mm to tips of arms and
18 mm across the disk, and 2 arms of another individual
ophiuroids- 2 arms only, no disks
Crustaceans include?
amphipods~ 5 (one carries 2 embryos, another is an oedocerotid)
cumaceans = 3
ostracods= 2 brown and 2 with sculptured
Mollusks are few and include:
Cadulus = 1 small Tellina - 3
Nassarius = 1 small shell fragments of others
Glottidia albida- 2 small
Nemerteans = one moderately large and several minute ones
Sipunculid - 1 small
Polychaetes include:
ampharetid - 1 tiny maldanid - 1, in sandy tube
Aricidea = 3 Nephtys - 1 large and 1 small
Chaetozone = many small Nereis procera - 2
Glycera - 7 small Nothria elegans- 6 or more
Haploscoloplos elongatus - 12 Pherusa = 1 juvenile
hesionid = 1 small phyllodocid - 1 juvenile
Laonice = l polynoid - 1 juvenile
Lumbrineris ?cruzensis - 3 Prionospio, nr. malmgreni - 19
Magelona, pouched - 18 Tharyx *parvus - many
SUMMARY.= The sample is characterized by the presence of many smaller
polychaetes and Astropecten. Total volume of organic matter, ex-
cluding the seastar, is 6 drams.
x rh.
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91
I SW-5. Sta. 5485-55. In 135 feet. OPG took 0.31 cuft of fine
green, well packed mud. The screenings were almost entirely animals
of various kinds.
Echinoderms include:
Astropecten californicus - 3
Amphiodia Amphispina) digitata - 2
Amphipholis squamata - 20
Crustacéans include:
larger amphipods, perhaps Ampelisca- several
smaller amphipods- many
cancroid crab=- 1 small
Mollusks include?
2 Ni@aLolaLeW icy ab
smaller pelecypods and gastropods - few
Nemertean=- few smaller kinds
Nematodes = some
Polycheetes include:
Anaitides Exogone, with attached embryos
Chaetozone Nephtys
Chloeia Pectinaria, smaller individuals
other cirratulids Prionospio spp.
?EBuc lymene Sphaerodorum
Eumida and others
SUMMARY.= The numbers and kinds of animals are limited, perhaps because
of the small size of the sample.
I SW-6. Sta. 5490-55. In 156 feet. OPG took 0.65 cuft of green .
sticky mud with many arenaceous and calcareous foraminiferans.
Echinoderms include:
Amphiodia digitata = 8 Astropecten californicus - 2
Amphioplus hexacanthus - 1 Ophiura lutkeni - 2
Amphipholus squamata - 47
Crustaceans include:
amphipods =- at least 30, with Pontharpinia sp. G-l
brown ostracods = about 80
cumaceans - some
fragment of a ghost shrimp
nebalian - at least 1
pinnixid = l
Mollusks include 2 living Polynices, a chaetoderm, a small Aglaja,
many Cadulus, other small pelecypods and gastropods
Anemone, ?Harenactis - 1
Nemerteans - about 10 smaller
Phoronids- 3, in stiff slender tubes
Polychaetes with 40 or more species, include:
Anaitides Eumida
Ancistrosyllis - 2 Glycera americana - 1 large
Aricidea = many, some ovigerous Glycera, other spp.- about 20
Brada= 1 juvenile Haploscoloplos elongatus - 7
capitellids with 2 or more species HarmothoS - 2 juveniles
-many Leocrates - 2
Chaetozone - several Lumbrineris cruzensis - many
Chloeia pinnata - 38 juveniles Lumbrineris, other species
other cirratulids - many Magelona = 2
Cossura candida - 4 _ maldanids, several species- many
Drilonereis - 2 Nephtys ferruginea - several
ae
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92
other nephtyids- some Polydora = 1
Nereis procera = 15 Prionospio nr. malmgreni - about 100
?Nerine - 2 or more Prionospio pinnata - about 40
Nino’ = several Scalibregma - 1 ovigerous
Onuphis nebulosa ~ 3 or more Sphaerodorum =- 3 ovigerous
Panthalis - 1 larger Spiophanes - 6 or more
Pectinaria - about 30, largely Sthenelanella uniformis - 5
juveniles terebellid in sand-covered tube -l
Pherusa - 20 small, some ovigerous Thalenessa and other sigalionids
Pholoe = 5 small - several
phyllodocids- various Tharyx ¢?parvus - many
SUMMARY.= This is a diversified shelf fauna characterized by many
‘kinds of species in different groups.
I SW-7. Sta. 2991-55. In 150 feet. OPG took 0.5 cuft of hard
packed black mud. The screenings consisted largely of different kinds
of smaller polychaetes.
Echinoderms include:
Amphipholis squamata - 15 juveniles
Ophiothrix spiculata - an arm segment only
Crustaceans include a pinnixid crab, a ghost shrimp, and a few
amphipods
Mollusks include a Cadulus, smaller gastropods ana pelecypods.
Polychaetes include:
Amaea occidentalis Melinna
Chaetozone Nephtys
Drilonereis, dark green fragments Nereis procera
BKuclymene- 12 or more in tubes Pherusa
Glycera Pholos
Goniada Podarke pugettensis
Haploscoloplos elongatus - 1U or more Poecilochaetus johnsoni
Lumbrineris spp. Sthenelanella uniformis
Magelona pacifica - 1 or more Syllis
Magelona, pouched = 1 or more
SUMMARY.= This fauna is characterized largely by a diversity of
smaller polychaetes.
I SW-8. Sta. 5491-55. In 198 feet. OPG took 1.65 cuft of
dark green sticky mud with odor of H5S. The screenings contained
many arenaceous foraminiferans, especially Alveolophragmium planis-
simum (Cushman), and many different kinds of metazoan animals.
Echinoderms include?
Amphiodia (Amphispina) urtica - 141
Amphioplus hexacanthus - 1
Amphipholis squamata = 176
holothurians- a purple, and a white papillated one
Crustaceans include:
pinnixid crab - 18, presumably commensal of maldanid
ghost shrimp = 3
amphipods- more than 64, include:
dexaminid - 19 ovigerous
phoxocephalids with:
Heterophoxus sp. A-2 Pontharpinia sp. G-l
Metaphoxus sp. A-20 Pontharpinia sp. J-3
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isopods = 9 93
cumaceans = 20 or more
ostracods = at least 13
Mollusks include many small pelecypods and gastropods, and a larger
chaetoderm
Echiuroid - 1
Enteropneust - 1
Nemertean - a very large red-ribbon kind and a smaller one
Nematodes = some ; Polyclad - 1
Phoronid - 3
Polychaetes include:
ampharetid = l
Ancistrosyllis - 8 small though mature
‘Brada - 1 larger, coarsely papillated and 4 much smaller, finely
papillated
capitellid, smaller kind- about 10
capitellid, larger - 1
Ceratocephala c. americana - 1
Chaetozone = some
Chloeia pinnata = 44 or more
Chone = 1
cirratulids, various kinds- many
Cossura candida = about 20
Drilonereis = 2 or more
EKumida = 1
Eunice = 1 larger, in mucoid tube
Glycera americana - 1 large
Glycera capitata - 16 or more
Goniada - 5 or more
Haploscoloplos elongatus - about 10
Harmothoé lunulata var.
?Laonice = 1
Leocrates - 2
Lumbrineris, large species - 1
Lumbrineris spp., smaller kinds- many
Magelonayi>. - 2
Maldane
other maldanids
Marphysa, resembling conferta- 2 larger and 2 small
Nephtys ferruginea and other species - 10 or more
Nereis procera
Nino& - ile
Paranaitis polynoides - 1 larger
Paraonis sppsz several
Pectinaria californiensis - 17
Pherusa - 8
Pholo® - 1 or more
Phyllodoce = 1
Pista, resembling cristata - in large, thick muddy tube
Prionospio pinnata = 10
Prionospio, other kinds - many
Rhodine - 1
Scalibregma - 1
other sigalionids - some
Spiophanes - 1
Sthenelanella uniformis - 1 or more
Terebellides » 1
Tharyx sp.- many
Travisia = 2
eto teh Ame we ‘alan Bais ‘jenn ed! rs ‘naa Bap ab
af pee Sc bares ot
ETA ed adinn ioctl’, Thais Peerrites:
[isew coun } Bina bedeei tage SL eAxsoo _Tegael
: is fable yh,
tek Sha “gh ep rts ve Siam | LER "3
| 7 we Wa? shee
a ih Ee pings pee
pnien ees - a ss
‘iti | alin puotsbe <a
ee RT eh ra : ae Bie Ab Laas
iN reece pea es
Hiooue
enSit
bined nis) ne A
ag
Of Tore ais
ie f= ebhie us wets
Ne Stet oni rei oe ‘eel ese
Siam S bow satel s ~Bgaeiaws ast ites
oc re eran cee
enn xo OF, > bgloagh 4 %oai o
L 4 {
édut ebhinn Sota Vaetel ah. ~ adataetas
7 ‘ to ain eye perp opme
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aC Aho aay) A if u alt a Vane oe fois 7 Phe Y
94
SUMMARY.- The largest animal is a red nemertean followed by Glycera
americana; the most numerous are various kinds of annelids, ophiur-
oids and crustaceans.
I SW-9. Sta. 5498-55. In 261 feet. OPG took 1.0 cuft of green
sticky mud. The screenings consisted almost entirely of animals or
their remains, large numbers of arenaceous foraminiferans,especially
Alveolophragmium and Goesella.
Echinoderms include?
Amphiodia (Amphispina) urtica - 328
Amphipholis squamata - 126
phioplus strongyloplax - 1
holothurians - 5 juveniles
Crustaceans include many entomostracans of various kinds
Mollusks include:
Aglaja, = 1 Solemya
adulus Tellina
chaetoderm = 2 or more smaller gastropods= many
Cuspidaria smaller pelecypods- many
Dentalium rectius - 1 large
Glottidia albida - a few small or juvenile
branching hydroid on turbon shell
hydroid,; Monobrachium, on Axionopsis shells- many
Nemerteans = some
Polyclad= 35 or more
Nematodes = some
Phoronid = slender tubes
Polychaetes includes
Lumbrineris ?cruzensis
Ancistrosyllis
smaller capitellids
Chloeia pinnata
various cirratulids
Cossura candida
Drilonereis
small Glycera
Goniada
Haploscoloplos elongatus
Harmothoe lunulata var.
Laonice
Magelona
smallér maldanids
Nephtys ferruginea and another kind
paraonids
Pectinaria californiensis
Pholo
smaller phyiiodocids
Prionospio spp.
Sthenelanella
Tharyx
SUMMARY.- The most conspicuous animals are ophiuroids and Pectinaria.
I SW-10. Sta. 3390-55. In 200 feet. OPG took 0.88 cuft of fine
green sandy mud.
Echinoderms include:
Amphiodia (Amphispina) urtica - 44
mphipholis squamata - 3
Ophiura lutkeni = 5
Crustaceans include?
stalked barnacles (Scalpellum) attached to onuphid tubes
a pinnixid crab
phoxocephalid amphipods:
Heterophoxus sp. A-1 Pontharpinia sp. J- 2
Pontharpinia sp. E-3
other amphipods, ostracods, cumaceans
Mollusks include a living Polynices, other gastropods and pelecypods
Glottidia albida - 1 larger and I smaller
| Sy ee Ye ee) cet CONS Ln ae
| aie snes s AOUUA She hole r “
vs . ; ca nel , va
ne
i, é Ste aN rahi swirahiies ae ibe i An
< ant: are cident Lo “ nae
Wee ©
be fpess 6 fhe Ook ond ‘aes lanes
b- “gg etunicm YS Yietitaa wmumnee fq locket
a RL Lotoends, ube sss kibeeeeT: Magpeen rs 78
. i } a rire) ae: a) Ia
C ve y ie: ier E . ite?
Be 3 ‘gaan <aboqwitées Ze.
a (9) AP Ay ee! BEY: elon hal Lente
MRO. ete S
t
. Re gen bat
5 =) F i Elew wer
a ~ : |
spon tie
ee a By « Has iE Ke :
BR teisana
he ee 2 Sis <7 aT ya cs Te ate. OO
: oo, 0 ROL
® she t. 7 ’ ite “On Bb ch oe oa" { sot cr
| mi es vi
| . bekegi oleae
, . » hee a t : ‘
i+ «ge sintqpidagc’. ae
; 6 PTI RO BNO SO cy Bay cc 5 g)'
"3 patos Danna ; '
abt yy 6.90) Dyas eh Ce eat ig SLE a pe obiee tos. ath a: ee * “abu ‘i
ee P , i a ee ee ee Topas a | ah
ay . | ‘ ;
=e i DO i ‘ : ’ } oF tis y ie, ao .
95
Polychaetes include:
Aphrodita - 1
Onuphid tubes
Pectinaria californiensis - 13
Travisia - 1
and others
SUMMARY of I SW=1 to 10: The biomass values resemble those in Zone
I-W, and the numbers and kinds of animal species are similar.
I NW-1. Sta. 3481-55. In 48 feet. OPG took 2.52 cuft of dark,
well packed mud with strong odor of H5S. The screenings consisted
of much black algal detritus, shell fragments and fine black gravelly
material. The contained animals are polychaetes of afew species.
Aricidea spp.- many, including large individuals
Haploscoloplos elongatus = many
Lumbrineris spp.
Nothria elegans = many
and some other smaller kinds
SUMMARY.- The largest and most conspicuous are Nothria elegans.
I NW-2. Sta. 3482-55. In 80 feet. OPG took 1.51 cuft of coarse
gravel with black mud. The screenings consisted of 2 1/2 liters of
coarse black gravel, sand, detritus and animal remains. Living
species were largely annelids, associated with a few small Glottidia,
some amphipods and other small crustaceans; mollusks were few and
small.
SUMMARY.- The most conspicuous and largest animal was Diopatra or-
nata with many individuals in coarsely constructed tubes
TNW=5. Sta. 5487-55. In 75 feet. OPG took 0.75 cuft of fine
black mud with odor of HoS. The screenings consisted of shell frag-
ments of Conus, PolynicesS, Nassarius and other kinds, in addition to
many kinds of animals.
Echinoderms include?
Amphiodia (Amphispina) digitata - 11
Amphipholis sgquamata - 9
holothurian = 1 juvenile
Crustaceans include:
amphipods = 21
ostracods = 10
pinnixid, commensal probably of maldanid = 4
cumaceans = some
Glottidia = 1 small
Nemerteans, sipunculids and small anemones, represented
Polychaetes include;
Ampharete ?arctica - Drilonereis - 2
neistrosyllis Buc lymene
Aricidea suecica Goniada - 17 or more
Aricidea uschakovi Haploscoloplos elongatus - 13 or more
Brada- 1 larger and 5 small Leocrates
small capitellid Lumbrineris limicola - 1 large
Chaetozone Magelona spp.- 10 or more
Chone Nereis procera - 28 or more
other cirratulids, many Nothria elegans- some, in tubes
Cossura candida Paraonis
96
Rneruse (= 5 rit Telepsavus sp. soil
Phyllodoce piophanes - 1, in tube
Pilargis Sthenelais
Prionospio,nr. malmgreni- 50 or more syllids
Prionospio pinnata - 2 Tharyx- many
Sphaerodorum - 1] and others
SUMMARY.=- The sample contained 60 or more species with more than 200
individuals; a few show peaks of abundance. The largest one is
Lumbrineris limicola, the most conspicuous are Nereis procera,
and spioniform kinds.
‘I NW-4. Sta. 6219-55. In 57 feet. OPG took 1.19 cuft of coarse
gravel. The screenings consisted of about 9 liters of rubble, with
many animals.
Echinoderms include 2 ophiuroids and a holothuroid
Crustaceans include:
cancroid crabs=- 11 juveniles
pinnixid crab, commensal of Schizocardium- 7
amphipods - 92 or more
isopods = 9
also a cumacean, a pycnogonid, and perhaps others
Mollusks include a smaller Conus, a Crepidula, various smaller gastro-
pods and pelecypods, none conspicuous
Hydroid colonies on tubes of Phyllochaetopterus
tubicolous anemone (cerianthid)- 1 in tube
a larger sea pen, Stylatula
white branching bryozoans- few
Nemerteans = 2-
Sipunculids- 16 smaller
Nematodes 15 or more
Leech- 1 tiny
Enteropneust, possibly Schizocardium- 1 large
Polychaetes include:
ampharetids = 9 Laonice
Amphicteis scaphobranchiata - 1 Leocrates tes - 1
Anaitides ~ 1 larger and 15 smaller lLumbrineris Yealiforniensis-
Ancistrosyllis 4 large
Arabella - 2 Lumbrineris, small form- 22
Aricidea - 7 Melinna - 1
larger capitellid - 1 Nephtys - 1 juvenile
small capitellid - 12 Nereis procera - 37
Chaetozone fecorona = 22 or more Pherusa - 1 larger, 9 small
Chone)=)"/ Phyllochaetopterus prolifica-
Cistenides = 1 about 50
Diopatra 0: ornata = 28 or more, to Prionospio pinnata - 4
25 cm long, weigh 437 grams Prionospio, other spp.- 10
Dorvillea gracilis - 15, some mature Sabellaria - 2, on dead shells
Drilonereis - 1 sabellid colony, in old Conus
Kuclymene - 4 shell
Bulalia = 2 Scalibregma - 1
Bumildal = 7/ Spiophanes - 1
Exogone = 26 Sthenelais - 1
Glycera americana - 1 syllid - 4
Glycera, another sp.- some Tharyx - 33, some ovigerous
Haploscoloplos = 9 and many others
Harmotho& lunulata var.- 4
a LECTED: ral ian
a ogs mre erom thf, tw ty ae Snce tbat to Od: be wcities ites 8
Bi eno Jeeyrel exit paar "o elseg woe Wik
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‘pbiaes to gun oy ‘ Gm. .884@L3
2" ed Ad iwW .eldaus 0. i y Es bea alamo ae) |
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| ; ‘o orto 8 bse Manhene scan: wi
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; : ; PD ye HT URC es, SE re
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* _ meidans ae rae pa taint age i Ee Oe) ae soe Ba Ht fens, so: RE ae
_ ct Bae pel Re ML eDORy oer. ee
Rs AM LR in
es lace ee pO eR ;
ee vh Sguesgod eax soot ie
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| et" ie + Shi Bod.
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7 £
f 7 Lunetoot hiss ats Pereitt: esi
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7 Sak iiss, . re
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VS : yi
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egoltiin ated Toe onder it: ;
ERS Ee em aa
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97
SUMMARY.- The largest and most conspicuous are Diopatra ornata. Total
number of species is estimated at 70 of which 50 are annelids;
total number of individuals in excess of 600. Echinoderms and
mollusks are few.
I NW-5. Sta. 3493-55. In 100 feet. OPG took 1.57 cuft of green
sticky mud with slight odor of HS. Most of the sediment passed
through the screens.
Echinoderms include: Astropecten armatus - 5
Crustaceans include a few amphipods
Mollusks include a living Polynices, a few Tellina, Cadulus, and some
other smaller gastropods and pelecypods
Glottidia - a few small
Cerianthid anemone- in tube
Some sipunculids and smaller nemertean
Polychaetes include:
Ancistrosyllis Lumbrineris spp.
Asychis- 1 in limp, silt-covered maldanids, in stiff sandy tubes,
tube with more than 1 species
Chaetozone Nereis procera- 1 ovigerous
Glycera Prionospio pinnata
Laonice and other small spionids Spiophanes
Lepidasthenia Sthenelanella uniformis
and others Tharyx parvus- many
I NW-6. Sta. 3493-55. In 95 feet. OPG took 1.19 cuft of green
sticky mud. The screenings were almost entirely animals of various
kinds.
Echinoderms include:
Pisaster giganteus- 1 large, weighs 187.5 grams (wet weight)
Astropecten - 1
Crustaceans include?
phoxocephalid amphipods, Pontharpinia sp. G-l , and
Pontharpinia sp. J-l
other amphipods, ostracods, cumaceans
Mollusks include?
a large ?Drupa sp.- 1, weighs 75.3 grams (wet weight)
Conus
Eulima
and other smaller gastropods and pelecypods
Nemertean, perhaps Cerebratulus- 1 large
Polychaetes with many species and individuals, include:
Nephtys other spionids
Nereis procera Sternaspis
Prionospio spp. Terebellides
various cirratulids a large terebellid, in tube
and many other kinds
SUMMARY.-The fauna from this area is enriched, represented by larger
and smaller individuals of many groups of animals. The largest
individual is Pisaster giganteus. The number of species is est-
imated at 75, that of individuals at 125.
I NW-7. Sta. 3494-55. In 114 feet. OPG took 2.68 cuft of green
sticky mud. The screenings consisted of many kinds of animals.
ere rae ain a
ie hic eam a
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De. ROOTS te: he
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Wy axl! Tee Aba
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|
i
a |
7. eee phanbnieea | ee (cy,
7 cakius ybtee Roty'a ak Vent aab ae basavedy
o = “getooge £) fopetst: esto alo, Ei Pa
Purotep hyo, a enema Bdemei
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ont noted © woe
Tala “aiid | \2 mae at) HAE
rea
ads
+
‘peorn xe fe erst. sine a OO: souk! Be
Rioitey to oiamina tiektine teomls one i. Bs
7 me
2
Dan ty, arte! sing Ea
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: (
age ‘bebucost
A nit aN Be seh eye
: ; ra i ie ae Srhrege
2 ‘ eebt
oe ectd at DELLodeted ae a.
Searel yd. bevneseuges (hasdotaite bt were. ekitt mort
Srey tat edt sa fam tae ho! BalrOm Sy | yeaa 90): land oebbad
eiBe et getoeda To: Diskus ot janoed hu} on megane th Rt:
| ie ia: » afew ty bya ee: Gall “ev 38.
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shat pe re bhihine Deca Se Desstene
98
Echinoderms include:
Astropecten californicus - 1 large
Amphiodia (Amphispina) digitata - 7
Crustaceans include some amphipods, 2 pinnixid crabs, a nebalian.
Mollusks include a moon snail, a few Tellina, living shells of Cadulus,
Leda, Thyasira, and others.
Glottidia albida - several juveniles
Nemerteans include a large Cerebratulus and several other small kinds.
Phoronid = 1 or more in tubes.
Polychaetes include:
Ancistrosyllis - several
Aricidea - several
- Cossura candida - more than 1
Diopatra tridentata - 1 larger
Glycera
Goniada
Lumbrineris spp.
maldanids in slender sandy tubes
Marphysa, resembling conferta - 1
Melinna, in tube
Nephtys caecoides - 2 larger
Nereis procera = 3
Pectinaria californiensis - smaller individuals and a few tubes
Pherusa = several smaller
Pholoe
Prionospio, nr. malmgreni - some
Spiophanes missionensis, in tubes - many
Sternaspis = 1 small
Sthenelanella uniformis, in tubes
Tharyx parvus = many
Tharyx, with tattered tubes - many
SUMMARY.= The largest individuals are Astropecten and Cerebratulus 5
the most conspicuous are various kinds of polychaetes. The number
of species is estimated at 50, that of individuals at 400.
I NW-8. Sta. 3395-55. In 146 feet. OPG took 2.00 cuft of sticky
black mud with slight odor of H_S. The screenings consisted of about
half a pint of dark gray sandy @ebris and a similar volume of small
white shell fragments.
Echinoderms include:
Amphiodia (Amphispina) urtica - 118 Amphiura arcystata - 1
Amphipholis squamata - 60 Ophiura lUtkeni - 1
Amphioplus hexacanthus - 4 holothuroids - 2 small
Crustaceans include:
ghost shrimp = 3
pinnixid crabs = 6
amphipods, many, with phoxocephalids:
Heterophoxus sp. A-1 Pontharpinia sp. G-l
Metaphoxus sp. A - 4 Pontharpinia sp. J-6
Mollusks include a few Cadulus, 2 Aglaja, a chaetoderm, and several
other small pelecypods and gastropods.
Cerianthid anemone = 3 in tubes
Nemerteans = some smaller
Enteropneust
Phoronid
_ | ae ac aed
ri ~
jes sung 6. elteda. sks, é + ie ¢hhane stopte Cie
Bh canis RAG T TeR SMe 9! 72) aah.
Ye i aed Azer v ut Lake &
shot Llama nestso ieweves bits “a ‘gL s aero one la) Bb
RAGS ah Recast BAS
ef. Lows st
ty
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a? We hy Lascuvee
: u D giGiet, erat
qi MOR bot She
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‘i ) {} ib ey i
; 3 \ sd . ? ig
i “ its i ak vaste upaae omhele
7 ex A ae ye a. gn — wens uti ek 1
£ si , oe eee
_ ~ ,. Ni ‘ as ( ; ; ; % f
; pas X
‘ ey nee hat pet Ale =
a4 as Hise
=)
; ca ay AR as
; ; Yea “~° aed ita att
oa * : Warn tee. saga eeidias Aat
euis 2 4: eng. DAB es oogotr eh ede elaub le hems meen 8
tediaic er SGdOONOTLOD 26 GhALs Sian ta RON Hite oL Gang
ODE Te AG Beh Die tit mit oe? Rico el Pas mee eS ara
aite Io 2%s9 Pees erne O20. deed aes 7) A Pape «WE
Rods ‘to bedalancs Asti geetor: are ER es od. RC ee
Tinks to esiloy setimte a poe etide® rhea waite, etn ie Be
2 : } l f
., t sonaptetoue puts “eke eo ditsst .(ertg ees
fo eat ‘Bre za viele Oo.
fiars 3 eb Toau Hd ole
cod ; ; i oe ted Tus eT OHO s aake id fw oer i8be
mi JO sft Bhat Giads ome ye: toh an euaee OLA
ae) Ome - 0 Gh ALmean wa ee: Geen , b i Goer
faints bit rte OS Raab a beh es oy. 3% vawtoaas, ‘Weak a: ORiipy
JRO OL SS: ‘Baie bey ior Vested!
2 oer aod fit Rien Ai
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f i oe
99
Polychaetes include?
Anaitides Marphysa, resembling conferta
Aricidea Nephtys
Asychis Nereis procera - 6
Ceratocephala c. americana Ninoe - several
Chloeia pinnata onuphids in tubes
Cossura candida Panthalis pacifica
Drilonereis Pectinaria californiensis - 25
Glycera - 20 or more Pholoe
~Goniada - 4 Prionospio pinnata - 1”
Haploscoloplos elongatus - 6 Prionospio, others - 50
Harmothoe lunulata var. sabellid in tube
Hyalinoecia juvenalis - 2 Spiophanes
Lumbrineris, larger species 10 Sthenelanella uniformis
Lumbrineris, smaller kind - 55 # and other kinds
Maldane - @
SUMMARY.- The largest individual is Panthalis pacifica, and the
most conspicuous various annelids and ophiuroids. The number of
Species is estimated at 75, that of individuals at 500 or more.
I NW-9. Sta. 5495-55. In 122 feet. OPG took 0.65 cuft of green
sticky mud. The screenings consisted of various kinds of animals,
tubes and many arenaceous foraminiferans.
Echinoderms include a few smaller ophiuroids and a moderately large
Astropecten californicus.
Crustaceans include several clusters of Scalpellum (barnacle), some
amphipods, many brown ostracods, cumaceans and other small kinds.
Mollusks include:
Acila Thyasira
Aglaja various kinds of bubble shells
Cadulus other small gastropods and
Polynices pelecypods
Glottidia albida - 2 small
Phoronids = several tubes
Polychaetes, very numberous, diversified and largely smaller, include:
various cirratulids Lumbrineris spp.
Cossura candida Pectinaria, small and few
Drilonereis Phyllodoce, juveniles
Euc lymene Prionospio, nr. malmgreni
Glycera capitata Prionospio pinnata
Goniada Rhodine
Harmothoe lunulata var. pobepsavus Spe
and others erebe 6s
SUMMARY.- The largest individual is Astropecten, the most conspicuous
various kinds of annelids. The number of species is estimated at
42, that of individuals at 150.
SUMMARY OF I NW-1 to 9. The biomass values are comparable to those
in zone I W and I SW, ranging from a Limited-Pollution-Fauna to
a Limited-Enriched Fauna.
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Petmiciins slisrsleneted aE wits Omrady ¥
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Vie Tediurcr sat” <eblosuinge bur Bhi lens) BLY Mr OO See elena gf
pesos so O0d gs elegbivhhat Lo": mg No: ag ey Ce seinen au 1
Pe maeta tO Jia Bh.0 Hoots PI9 - ates RSL ait
BM ; paledtna +0 i chain BrOTHBY Jeo héevateaon
. acare tats
entel + Lovanehon A Baa: BD LOMB LAGS TOL Bie
ue
enon. (elonsiad) mutpen tas’ 2 9 aod wate ‘
eeprnts Tilame “adic paeopemre ,sbooatiRe. Wins
, (Orie ayiiy
Bites al oud Sch SLEL - as 5 oda Y
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<auiaaae ete lL Lene CAS Ris) has Dettheverine error oceatty ae
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wot bade flbne. (eles
dt Stay
aolte TOV Gg eoReS
goesanlen . Ut <ee Page
BO RELY Ril LES Ds igen:
Lapibteare ry are
BrouoliueioD dpon rice re Semsniea:t =E i Aegis vebiat Derren | ’
a | a aba ah eetogge to oGnet aut wotlenne Loeb 4
PyRet fal ataubiv teeth 2 #
saorls 5 efduteqnes : ers aouLan teemokd att voror seam
ov Brhtl=totici@ ot hed ba a bab Sas hee antaaes wa py Beee WM
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100
II=-1. Sta. 2788-54, In 54 feet. OPG took 1.52 cuft of coarse
gray sand and shell. The screenings consisted of nearly 32 liters of
shelly and sandy rubble and biological debris; many dead tests of
Dendraster, filled with black mud, contained a long, slender sipunculid
and their outer side had occasional sand-covered solitary tunicates.
The living animals are largely sipunculids and polychaetes of a few
kinds.
Amphipods, few, with phoxocephalids:;
Pontharpinia sp. B32
Pontharpinia sp. M=2
Polychaetes include:
Aricidea suecica - many
Lumbrineris, with long head - 1
Marphysa mortenseni - 1 large
Pisione, near remota - many
and some others
SUMMARY.- The largest individual is Marphysa, the most conspicuous the
Sipunculid inhabiting dead tests of Dendraster. The number of
species is estimated at 7 to 10, and that of individuals at about
150.
Ii=-2, Sta. 5161-55. In 75 feet. OPG took 0.06 cutt of fine
gray sandy mud. The screenings consisted of biological rubble weighing
196 grams, some tube fragments, broken shells, many smaller dead
mollusk shells, a few foraminifertms, and many animals.
Echinoderms include?
Amphiodia (Amphispina) digitata - 1
Amphioplus hexacanthus =- 2
Amphipholis squamata - 1
Ophiura lutkeni = 6
Sa
Ophiuroconis bispinosa - 5
Crustaceans include:
amphipods with 14 species and about 106 individuals with:
caprellids = 30
phoxocephalids with:
Metaphoxus spe A-1l Pontharpinias pi. Kya
Pontharpinia sp. B-23 Pontharpinia sp. Q - 8
ampeliscid, Ampelisca cristata - 1
stenothoid = 5
oedicerotid - 4
pleustid = 1
photid = 25
corophiids with?
Corophium sp. = 1 Erichthonius brasiliensis - 3
aorid = 4
Mollusks include few living small gastropods and pelecypods
Glottidia albida - 6 small
Slender hydroid stalks
Nemerteans - i larger red, in a tube, and 4 smaller ones
Ascidian - 1
Polychaetes include?
ampharetid =- 1 juvenile capitellid - 1 juvenile
Anaitides = 1 juvenile Chone = 1 large and 3 small
Aphrodita Diopatra ornata - 1 juvenile
Aricidea spp. = 23 _ Diopatra tridentata
Armandia = 2 Drilonereis
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101
?Euclymene = 8 Paraonis = 5
Eumida Pherusa - 2 small
Goniada - 4 Phyllochaetopterus prolifica-10
Haploscoloplos elongatus Platynereis bicanaliculata
Hemipodus = 1 Podarke pugettensis-2 juveniles
Hesperalia - 1 Prionospio nr. malmgreni-120 or
Laonice - 2 more -
Lumbrineris cruzensis - 17 Prionospio pinnata - 3 large
Magelona (pouched) - 15 3 and 2 small
Nephtys caecoides - 5 Spiophanes missionensis - 4
Nereis procera = 5 Sthenelais =- 1
Onuphis eremita - 5, in tubes Syllis -(3
Onuphis nebulosa - 100 or more terebellid - 2 juveniles
and others Thalenessa = 4
Tharyx - many
SUMMARY.- The largest individualis Nephtys caecoides and the most
conspicuous is Onuphis nebulosa. The sample is estimated to have
about 60 species and more than 650 individuals. The sample was
very imperfect,- about 0.06 cuft.
II=- sub 2. Sta. 4047-56. In 222 feet. Volume not measured.
Screenings consisted of about 6 liters of gravelly materials; most
conspicuous animals were pink cone-like colonies of a bryozoan,
Conopeum commensale (identified by Dr. John Soule), white sponge with
long, compact needles, various dead mollusk shells, and polychaetes
especially Nephtys, maldanids, and many others.
II-5. Sta. 3162-55. In 75 feet. OPG took 0.1 cuft of fine gray
sand. Screenings consisted of about 250 grams of rubble mixed with
many different kinds of animals, mostly small in size.
Echinoderms include:
Amphioplus hexacanthus - 2 Ophiuroconis bispinosa - 5
Amphipholis squamata - 2 Ophiura lutkeni - 5
Astropecten californicus - 1 holothurian - 1
Lovenia cordiformis = l
Crustaceans include many amphipods with:
phoxocephalids:
Pontharpinia sp. B= 38 Pontharpinia sp. K = 5
Pontharpinia sp. G= 3 Pontharpinia sp. W - 9
many isopods, some cumaceans, a pinnixid
Scalpellum (barnacle) attached to tube of Phyllochaetopterus
Mollusks include various smaller gastropods and pelecypods, none
conspicuous
Glottidia albida - 23 small
Nemerteans - 4 or more, all small
Platyhelminth = 2
Nematodes = 2 or more
about 10 slender stalks of hydroids
Polychaetes include:
?Ampharete arctica, in tubes - 2 Chone, slender form = 1
Anaitides - 3 Chone, robust form - 1
Aphrodita armifera =- 1 ?Chaetozone =- 6
Aricidea spp. - 19 Drilonereis
Armandia = 2 Eumida ?sanguinea - 2
capitellid = 1 Exogoninae = 2
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102
?Genetyliis = 2 Onuphis nebulosa - more than 200.
Glycera - 3 onuphid
Goniada = 6 Phyllochaetopterus prolifica-50
Haploscoloplos elongatus - 3 Pista
Hesperalia - 4 Platynereis bicanaliculata - 4
°Heteromastus filobranchus Podarke pugettensis
Laonice Prionospio nr. malmgreni - 40
Leocrates Prionospio ?cirrifera - some
Lumbrineris cruzensis - 12 Prionospio pinnata - 3
Lumbrineris, large kind - 1 Pseudopotamilla, in tube
Magelona, p pouched - 18 Spiophanes - 2
maldanid = 7 or more Syllid - 8
Nereis procera = 6 ?Talehsapia
Nephtys ferruginea = 10 Thalenessa - 3
Nothria ?elegans = 1 Tharyx =- 10 or more
and others
SUMMARY.= The sample represents a diversified fauna; the large individual
is Glycera, the most conspicuous Onuphis nebulosa. The number of
species are estimated at 90, that of individuals at 500.
II+4,. Sta. 2722-54. In 92 feet. OPG took -.25 cuft of greenish
sand with shell fragments. The screenings consisted of less than a
liter, with many kinds of smaller animals and little debris.
Echinoderms include:
Amphioplus hexacanthus - 1
Lytechinus ané anamesus = 2
Ophiura lutkeni - 11
Smaller crustaceans numerous and diversified
Mollusks include Chaetoderm and other kinds
Sipunculids
Nemerteans
Polychaetes numerous and diversified
SUMMARY.= The sample is estimated to contain about 50 species and more
than 550 individuals.
Ii-5. Stations 2194-52 and 2195-52, in the vicinity of Hermosa and
Seal Beach piers, in 96 to 128 feet, over gray sand, using a 6-foot
beam trawl, took the following kinds of fishes (identified by Howard
Winter and Vernon Gregory).
1.6 miles from the end of Hermosa Beach pier?
Sand dab, Citharichthys stigmaeus
Dover Boiler Microstomus pacificus
English sole, Parophrys Parophrys vetulus
4 miles from the end of Seal Beach pier:
Tongue sole, Symphurus atricaudus - 2
Sand dab, Citharichthys . stigmaeus - 4
Kingfish, Genyonemus lineatus
Mottled turbot, Pleuronichthys coenosus = 6
Queenfish, Seriphus politus - 2
Midshipman, Porichthys miriaster - 2
Bay pipefish, Syngnathus leptorhynchus
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103
II=6,. Sta. 5165-55. In 152 feet. OPG took 2.83 cuft of black mud
with strong odor of H,S. The screenings consisted of fine black sand,
a stick and small bits of plant debris weighing 1050 grams.
Echinoderms include only 5 very small ophiuroids
Crustaceans include:
pinnixid crab, commensal with Schizocardium, an enteropneust - 59
amphipods, presumably of one kind - 18
ostracod - l]
Mollusks include:
-Macoma sp. - 1 large, weighing 31.7 grams (wet weight)
many smaller gastropods and pelecypods of various kinds
Nemerteans - 4 or more
Nematode = 1 or more
Schizocardium, an enteropneust =- at least 20
Polychaetes include?
Ancistrosyllis - 26 Leocrates - 1
Brada = 6 Nephtys ferruginea - 2
Capitella capitata - 56 other Nephtys
other capitellids Nereis procera - 3
Chloeia Pectinaria californiensis - 2
Cossura candida = 4 Pholoe - 2
Givcenay =i Prionospio tcirrifera - 7
Haploscoloplos elongatus Prionospio pinnata - 8
Harmothoe lunulata var. - 8 Prionospio, other spp. - many
Laonice = 2 Telepsavis sp. - 5 in tubes
Spiophanes :
SUMMARY.» The largest individual is Macoma, the most conspicuous is
Schizocardium. Conspicuously lacking are echinoderms, diversified
smaller crustaceans, Glottidia, and others. The sample is estimated
to contain 33 species with 275 individuals.
IIi=-7, Sta. 2559-53. In 185 feet. OPG took 0.65 cuft of gray sand
and clay. The screenings consisted of many polychaetes, ophiuroids,
echiuroids, arenaceous foraminiferans, and many diversified kinds of
animals.
Echinoderms, totalling about a pint, include:
Amphiodia (Amphispina) digitata - 388
Amphipholis squamata - 43
stropecten californicus - 2 juveniles
holothuroids = a long purple and a smaller white papillated kind
Crustaceans include?
amphipods =- more than 100
ostracods - about 12 with 2 or 3 species
isopods = 9 or more
cumaceans = 5 or more
Mollusks include many smaller pelecypods and gastropods with:
Cadulus
Cylinchna diegensis
chaetoderm
Volvulella
and others
Glottidia albida - 1 larger and 6 small
Nemertean - several
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104
Echiuroidea - 5 moderately large
Enteropneust - an anterior end
Polychaetes include:
Amaea occidentalis - 2
Ammotrypane
ampharetid
Armandia
Brada = 4
capitellid
Ceratocephala c. americana - 2
Chloeia pinnata - 150 or more
Cossura candida = 4
Diopatra in tube - 1
Eumida ? sanguinea - 1 or more
Bumida sp. in sandy tube
Eunice
Glycera ? capit - 14
Goniada - 7
Haploscoloplos elongatus - 11
Harmothoe junulata var. - 10, in maldanid tube
Leocrates - 3
Laonice
Lumbrineris bicirrata - 5 large
Lumbrineris spp. = more than 100
Marphysa, resembling conferta - 8
Myriochele gracilis - with everted proboscis
Nephtys ?californiensis - 1 larger
Nephtys spp. = 5 or more
Nereis procera
Ninoe = 2
Onuphis, in tubes = 2
Paraonis = 5 or more
Pectinaria californiensis - 21
Pherusa = 18
Pholoe - 149 or more
phyllicodocids = several
Pilargis maculata
small Pista
Polydora, in tubes fully attached to Diopatra tube
Praxillella affinis pacifica - at least 6, in sandy tubes
Prionospio, nr. malmgreni - 60
Prionospio pinnata = 24
Scalibregma, small species - 5 ovigerous
Sigalionid
Telepsavus _sp.: in tubes
Spiophanes missionensis, in tubes
Sthenelanella uniformis, in tubes
Terebellides = 5
terebellid fragments
Travisia = 3
SUMMARY.= The sample is characterized by diversity of kinds and large
numbers of individuals. Number of species is estimated at 65, and
that of individuals at more than 1000.
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105
IIi-8. Sta. 2195-52. In 240 feet. OPG took 3.0 cuft of fine sandy
mude The sample has been partly analyzed (Hartman, 1955, p. 45). The
bottom resembled II-7 in its diversity and large biomass.
IT-9. Sta. 2560-55. In 291 feet. OPG took 1.635 cuft of gray sand,
rock and clay. The sample has not yet been analyzed.
SUMMARY of Zone II-l1 to 9. The small triangular shallow area in the
vicinity of Redondo Beach supports an unusually diversified fauna
with concentrations of species unmatched in other parts of Santa
Monica Bay.
III-1. Sta. 3218-55. In 39 feet. OPG took 0.51 cuft of fine green
silty sand. The screenings consisted of less than half a pint of animals,
mostly annelids, and little debris.
Echinoderms include 3 small ophiuroids and 2 tiny holothuroids.
Crustaceans include?
pinnixid crab = 3
amphipods - 34, and caprellids - 3
cumacean - 3
nebalian - 2
tanaids - 7
munnid isopod - 1 or more
ostracod = 2
pycnogonid - 1
Mollusks include smaller pelecypods and gastropods, both dead and living
shells, of Tellina, Eulima Volvulella, Nassarius, Polynices, Yoldia
and others.
Glottidia albida - 1 minute
Coelenterates include a few stems of Aglaophenia (hydroid)
Monobrachium, on small clam, perhaps Axionopsis
Nemerteans - 1 larger and 6 small
Nematodes = 3 or more
Polychaetes include:
Arabella - 1 large Nothria elegans, in tubes = 6
Aricidea - 7 Onuphis
Caulleriella - 10 or more paraonids
Exogoninae =- some Phyllodoce - 2 ovigerous
Glycera Pilargis maculata
Goniada littorea - 12, ovigerous Platynereis, juvenile
Haploscoloplos elongatus - 3 Poecilochaetus johnsoni
Harmothoe lunulata var. Prionospio nr. malmgreni - 350
Laonice or more
Lumbrineris spp. - 25 or more Prionospio pinnata - 4
Magelona - 8 Syllis “= 10
Nephtys caecoides - 1 large, 6 small Tharyx parvus - 2
Nereis - 2 juvenile
SUMMARY.- The largest individual is Arabella, the most conspicuous
Nothria elegans.
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106
IiIe2. Sta. 3200-55. In 60 feet. OPG took 1.0 cuft of medium green
sand. The screenings consisted of much flocculent dark debris and many
animals.
Echinoderms include?
Astropecten californicus - 5
Amphipholis squamata = 1
Amphioplus hexacanthus - 2
Crustaceans include a pycnogonid and a few isopods
Mollusks include:
Solen - 2
Tagelus = 3
' Tellina - several
and some others
Glottidia albida =- 1 small
Polychaetes include?
Amphicteis scaphobranchiata Nephtys
arabellid, partly engulfed by Nephtys - Nereid
cirratulids Nothria
Drilonereis Paraonis, ovigerous
?Huclymene Platynereis
Lepidasthenia Prionospio pinnata
Lumbrineris cruzensis ?Psammolyce
—- Lumbrineris, large species Sternaspis
Magelona Streblosoma
Megalomma Terebellides
Melinna terebellid, in old shell
and others
SUMMARY.= The most conspicuous is Astropecten. The sample is limited
in diversity and abundance.
IlI-3. Sta. 5312-55. In 91 feet. OPG took 0.84 cuft of fine green
silty sand. The screenings consisted largely of biological debris and
animals.
Echinoderms include a larger and 2 smaller holothuroid, and ophiuroids
numbering more than 20.
Crustaceans include:
a small pagurid in dead moon snail shell
Scalpellum clusters - 1 larger and several smaller
amphipods include 3
phoxocephalids with
Metaphoxus sp. A = 3 Pontharpinia sp. G= 14
ontharpinia sp. B-12 Pontharpinia sp. Q- 5
Pontharpinia sp. E- 5
and other kinds
Mollusks include Chaetoderma, smaller shells of Tellina, Nucula, Cadulus
and others.
Glottidia albida - 13 small, perhaps juvenile
Anemone - 2 small
Phoronid, in slender stiff tubes - 3 small
Polychaetes (very numerous and diversified) include:
Amaea occidentalis - 5 Aphrodita - 1 juv.
Amphicteis scaphobranchiata =- 1 Aricidea - 7
Anaitides = 7 capitellid, small kind - about 10
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Chloeia pinnata - 3
Cossura candida = %
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?Euclymene - about 20
Exogone, ovigerous - 1
Glycera ? americana - 2
Glycera ? capitata - 9
goniadid - 2
Haploscoloplos elongatus - 2
Harmothoe lunulata var. - 1
Lepidasthenia - 1
Lumbrineris ?cruzensis = 24
Magelona = 1
107
Nerine - 3
Nothria elegans - 6
Notomastus magnus - 1
Onuphis nebulosa - 1
onuphids - several, in tubes
Pectinaria californiensis - 2
Pherusa - 10 small
Pholoe - 2
Phyllochaetopterus prolifica - 1
Platynereis bicanaliculata - 1
Polydora - 1
Prionospio pinnata - 5
Prionospio, other species - 7 or more
Maldane - 1 large and 5 small
maldanids - several
Spiophanes - 1
Sternaspis - 3
Megalomma = 1 juv. in tube Sthenelanella uniformis - 10
Melinna - 5 or more, in tubes Terebellides - 3
Nephtys =- 5 Thanelessa - 2
Nereis ?procera - 8 Tharyx - 5 or more
and others
SUMMARY.- The largest is Notomastus magnus, and the most conspicuous is
EKuclymene sp. The polychaetes are the most numberous and diversified.
III=-4, Sta. 5208-55. In 150 feet. OPG took 1.15 cuft of fine green
Silty sand. The sample resembles that of III-3, except for the presence
of an echiuroid, Listriolobus, and the increasing number of species
living in the bottoms.
Echinoderms include more than 100 ophiuroids and 2 purpie holothuroids.
Crustaceans include?
ghost shrimp = 2
amphipods - many, including 4 larger Ampelisca and others
cumaceans - many
ostracods = many
isopods = some, with Gnathia and others
Mollusks include;
Chaetoderma Leda
Bittium Pandora
Cadulus Tellina
Cuspidaria Volvulella
Cylichna and others
Hiatella arctica
Glottidia albida = 1 larger and 11 smaller
Echiuroid with Listriolobus = 8 or more
Nemerteans
Sipunculid
Monobrachium = 2 colonies on a small clam
Phoronid = 2
Enteropneust - 1
Polychaetes include:
Ammotrypane Diopatra tridentata
ampharetids Drilonereis
Ancistrosyllis Glycera americana - 1 larger
Artacamella Glycera capitata - 10 smaller
Chloeia pinnata - 40 or more
cirratulids = few
Cossura candida = 3
Haploscoloplos elongatus - 4 small
Harmothoe lunulata var. =- 10 or more
Leocrates
OS ith
fecug ae banatee”
fh. Yen
he einem a
sb tt Loge wutedae sacs ‘4 ae ‘oueate enue
a givoltadsage eee ek ek fo Say Scam eTTe ph
a Peaniig ae s
abawos: tepeo eee CY SATE OSPR Pe
SEane BSCUy Che Bs AO ee
fetch Niet ; bars en
i e ay ey i «Oe a
oe tang
eae! amoa of ma tO
iy
cae oe hil hail Nite “ly +h
sued
Brouclqaaon deom das Bs
its previ bia RuCTE edge
one
bawt? Bo. ste SLi fh woess Hawt OSL re aabose,
scibeertd ead 07 deans tt? 26 Jats eoldhionew elanes
aig ES oe we coded oitereront eit bos «sudelosety ted
a rece mane TE", fe ene vet sited
Yongidqs OCL ar? oom abo leat:
white OG Re
eet a: ae
“agency on ey } rane
wed eEnokoe |
hee
monnal £
ees Lame OD»:
oma k= eudaudol
Olas ~tayv Brats
108
Lumbrineris cruzensis - many Prionospio pinnata - several
Lumbrineris californiensis - 1 Prionospio, nr. malmgreni - 10
Magelona - 2 Rhodine - fragments
Maldane - 2 small Scalibregma - 3 small
maldanids, other kinds Sternaspis - 2
Nephtys = about 8 Sthenelais
Nerine - 3 Sthenelanella uniformis
Pectinaria californiensis - 8 Terebellides - 9 smaller
Pherusa capulata - 1 larger and others
Pherusa, another kind - 1 small
SUMMARY.= The sample has characteristics of an undiminished fauna for
having representatives not present near effluent areas.
TII-5. Sta. 3210-55. In 170 feet. OPG took 0.97 cuft of fine medium
green silty sand. The screenings consisted of about a pint, largely
animals, of which about half was various kinds of ophiuroids, not quite
as much was other kinds of invertebrates, and the inert debris had many
arenaceous foraminiferan remains, especially Rhabdamina and others.
Echinoderms include many smaller ophiuroids and a tiny asteroid.
Crustaceans include:
larger amphipods, perhaps Ampelisca - 17
many smaller amphipods
ostracods, largely brown, some rectangular white - many
cumaceans = 9 or more
tanaids =- 4
isopods = gnathid - 6, presumably with rhizocephalan parasite
anthurid - 6
a small crab, Heterocrypta
parasitic copepod attached to thorax of Terebellides.
Mollusks include some smaller pelecypods and gastropods, none conspicuous
Hydroid, Monobrachium, on small clam
Polyclad, 1 smaller
Polychaetes include conspicuous numbers of Chloeia, Pectinaria, Pholoe,
a larger Travisia, and many other kinds.
SUMMARY.- The sample is characterized by many different kinds of animals.
III-6. Sta. 3206-55. In 201 feet. OPG took 0.05 cuft of fine green
silty sand. The screenings consisted of many kinds of smaller animals
totalling about 11/2 pints of which ophiuroids and other echinoderms
measured about half of the total. There were a few red waxy lumbs, so
light in weight as to float in water.
Echinoderms include?
many smooth disked, smaller ophiuroids, totalling about 2/3 pint
small purple holothuroids - 6
sea urchin = 1 small, measuring about 21 mm across the disk
a small sea star
Crustaceans include:
pinnixid - 2 small
amphipods = about 124, with 23 larger red, and 101 smaller pale kinds
cumaceans, including at least 4 species and totalling about 36
ostracods, including at least 3 species and numbering more than 70
isopods, including 2 anthurid, 8 Gnathia (some of which may be para-
sitized by a rhizocephalan), and 6 tanaids of which one is an
adult male and one female carries ova.
LAXOVH >?
cu pee! Eaerene: | ; eee BORO YS
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ter Bee eq oom aovban sogenaet
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etiep ton ebioG reine: holt acotuay aan tip tuo t te
; asia ber elsdet treat \e mei bra , ed emo eenerrnl Re Perk anes
senedsc- bie Sminabowdk % viistooged: caritiome:: face hod Sa rces Bh
y iii cid, & baa) ebtoasidge. reas A ise pph las .
‘
oy ‘a
a - aon! Lea ‘eqaduan. <uboat icf
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i
ete, = ateciws
giinatay netengeous tia ao tw Cidomepeit Ph ee east ~<a
Pens a ee) me bee
Paks hai OE: = pane he he
tel To Kasodd oth tape Pe POC AG
avout? prog |
shitty
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ebadel f pons Ve. ae Bis.
SOTLIS : (kaa YC bow tena genes at eran 5
iS Gttk to ttre 80.0 ploot O80 «Peo YD LOS ret Po
a aitire sollame to Bhath yuan Le mere” ane tnes toe iat
mneborniioe teito Ans ab towa kde, Bodeiy * oN esnt@y aM Ue an
Se .edmel. yxaw bed wet 3 enw! erst A esov edd ote eo
Cee iu nbcisiael pit pant: Ot Be
bites : eat, a RRA
THO0R AGLiLarod ii Racin bder xo Liane Spent
; cae oy G- Bhid midges al S)
ody apotos ‘iat oe Rips Satcanets rneatins f
re Lot eted collate LOL
te @roue aati le fad ae Ror HaQe » daaes
v. add: wae gobredane Die getooge 6 ¢
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. ne ono BokAW sabbemeg &) fate | Cs
. ny. dbo Ponk
109
Mollusks include:
chaetoderm - 2
many smaller gastropods and pelecypods of diversified kinds
Coelenterate, Monobrachium - about 50 colonies, on small clam
?Harenactis = 4
Nemertean - a few smaller
Polychaetes include:
Ammotrypane Panthalis pacifica, with tube
ampharetid Paraonis - 7
Aricidea - 5 Pectinaria californiensis - 2
Asychis - a posterior end Pholoe - 42
capitellid, ?Leiochrides - 1 Phyllodoce
Chloeia pinnata - 1 large, 21 small Poecilochaetus ?johnsoni- 2 juv.
Chone ? mollis = 3 Polydora
cirratulids - 10 or more Praxillella affinis pacifica-2
Glycera capitata - 5 Prionospio nr. malmgreni- about
Goniada - 2 ALO)
Haploscoloplos elongatus - 4 Prionospio pinnata - about 10
Harmothoe lunulata var. - 5 Scalibregma - 4, some ovigerous
Leanira Sternaspis
Lumbrineris californiensis Sthenelais tertiaglabra
Lumbrineris cruzensis - 35 Sthenelanella uniformis
Lumbrineris latreilli Streblosoma
Magelona ?pacifica Syllis
Maldane = 3 Terebellides - &
Megalomma, in tube terebellid, in tubes - 4
Myriochele gracilis Thalenessa spinosa
Myxicola Travisia ?pupa - 3
Nephtys - 3 and others
Nothria elegans - fragment
SUMMARY.- This sample contains no less than 90 species of metazoan
invertebrates of which about 48Y are estimated to be polychaetes.
None is conspicuous for its abundance. The sample was very small.
IiI=-7. Sta. 3203-55. In 200 feet. OPG took 1.57 cuft of sandy and
finer green silty mud. The screenings consisted of about 2 pints of
various kinds of animals, a large clam, various kinds of arenaceous
foraminiferans and some silt.
Echinoderms include?
ophiuroids, perhaps hundreds of smaller, smooth kinds
asteroids = a small juvenile, and arms of a larger one
holothuroids - several smaller, including 2 tailed (?Molpadia) and
others
Crustaceans include:
amphipods - 50 or more
ostracods - many
cumaceans - many
isopods, including Gnathia, with a Pair in a tube and 4 others,
some of which may be parasitized by rhizocephalan
tanaids = some
Mollusks include:
Compsomyax subdiaphana - 1 larger, measures 60 by 45 mm, weighs
24 grams (wet weight)
Chaetoderm - 1
various smaller gastropods and pelecypods, with 50 or more small
clams partly covered by Monobrachium, a hydroid
pean rer
ebrih eit resten as Phog yond ay “hiss eas ah "
mole. Sheee, ie peabe tor v8 -deede > sulsiesqvenc!
ee -
leduy oete, &:
wera memanaal 33 + ee. eG , Pi in “nt ‘
: RS KO. hake oe tbs Bsa on oiyetace ad
; tar i ‘x wor 2) 7 > ‘Ped : log ped A g y oe
wit -S = Enoscrict* apseadopltoegs « Lane [2 ,egear t ~~ Bt ene se
BAST LOT ; ae
R-gok? ye Sat Biot ts. ert eee oe eps
: oh metho sel oft nit a Siavoroiss sea ' site ¥ a
i Muods ~-udsehic 2!
i; ‘ant ve akon i ee
xd bitisb fcoced Blak es
Giariot fray ist rena tones
r arioe ass za fe
eitine
- OF Mf} = 3 a en Lodarel
Bac al m : cheep
ee _ dgjeatyares se
Kaosatem to eefvede OC nett acel oo ReAeeRG ELGRe SE
Sientovlog et of bavaat bees ena ak By “afoda sig kew To Betetd
‘eey a6¥ piqsiet eft catanteirn ae, mth) beienbinciin 9
bhase Ro sto Vouk’ ink SRO: feet Os Ae: sae hOge. lave
punts yi Juodea to bevelenoo ngniiesteos baile bien ht he
gp to abaia ‘mark tay utile eget S: alaeite to 2a
ti mre omee: bie wna!
. 2 ie So abit ok a
thirth ditoonn cot iade ho abesbawd aqackeg. \ Bpte
aio vepial a To erie im eLtaery PLané: 6 eb
glosaGg lout } beliad g ae bheetens, tel fae! te an re ODEON
i edite
Abanipak.
eon th (ORs BRRE
Chem + aie
} i ‘ aa ham we ie oe
Witetigen 2 Bas ecut 2 ch Stag a ot ia vadtitard’ gulsu loi,
» nalovtiqgooortits oe Rueka nanan ad xan reac Me ‘191@
- ; a oS
Giaber ma Gd dhe he eeu
ccalamiet: 03 aan ioe
110
Glottidia albida ~ several small
Coelenterate, Monobrachium - about 50 colonies on small white clam, some
have attached medusae
Nemerteans - several very small
Nematode - 1 or more
Sipunculids - many, in arms of Rhabdamina (a foraminiferan)
Polychaetes include:
Aglaophamus dicirris - 2 Paraonis = 2
Ancistrosyllis Pectinaria californiensis - 5
Ceratocephala c. americana - 5 Pholoe = about 20
Chloeia pinnata - 32 small ?Pista, in tube
-chaetopterid, ?Spiochaetopterus Poecilochaetus johnsoni
Cossura candida Prionospio nr. malmgreni - 6 or more
Glycera - 3 Prionospio pinnata - 6 or more
Goniada = 3 Sphaerodorum minutum - 4
Harmothoe lunulata var. - 4 Spiophanes - several
Lumbrineris spp. = about 40 Sternaspis
Magelona - 1 large Sthenelanella uniformis
Maldane = 3 streblosoma
maldanids = many in sandy tubes Terebellides - about 6
nerinid - several Tharyx or also other cirratulids
Ninte Travisia - 1 large and 2 small
Panthalis = 2 and others
SUMMARY.= This is a diversified, unlimited shelf fauna. The largest
individual was Compsomyax subdiaphana3; Monobrachium showed unusual
abundance.
IiI=-7a. Sta. 4516-56. In 221 feet. OPG took 0.81 cuft of sticky
green mud, all of which passed through the screens but about a pint,
weighing about 56 grams, of which most was smooth red ophiuroids,
weighing 357 grams. The screenings contained considerable Rhabdamina.
This was nearly a repeat of III-7, for the purpose of taking Monobrachium
(see above), which proved sparse in this sample.
Echinoderms include many smooth red ophiuroids, and holothuroids of two
kinds,- a white with longitudinal rows of papillae (3), and a pale
lavender kind without papillar rows (2 or 3).
Crustaceans includes
amphipods = many
ostracods = many brown and fewer white with black spot
cumaceans = some
isopods, including tanaids, anthurid and Gnathia
Mollusks include?
chaetoderm = 1 very long and several smaller ones
numerous smaller pelecypods, some with Monobrachium
gastropods of smaller and various kinds
Coelenterate, Monobrachium - some colonies on small clam, of which a
few have attached medusae.
Polychaetes include:
Chloeia pinnata, juveniles Panthalis, tube
Chone paraonids - many
Cossura candida Pectinaria californiensis - 12
Flabelligera - 2 juveniles Pholoe = many
Maldane Pilargis berkeleyi
other maldanid Pista, in thick mud tube
nerinid Prionospio, various species
' ae hee tae ; Eiaive id
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‘guaes. deoteslon toes
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engin to, d) ~ BI SAALY een tote) et ke Se
aye Bm ie See meccob gene Ui
eee
C ree + come
3 sratta Hedi? vheee oh yen +B!
apiiicarvifo testo oad Pepto \ a SPS aL ga AS a a SS
Siem -S bas oyral a oo ake ckyect if Tae zeae
cy a a Oo BL fam
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i daegrai edt. 4enire? '"
fone tgs Bevonts miatgiae
Hatta to suo 18.0. ad6s DIO. —pteat De. ae: ORK BLS ae oe
: ears 2. Suade toed ereense edt. Aerouay Kemeny. fot itw “kes eee
cent omit o He A ce Haw, das Mok y Seema Ose sere
Saaimebdadh sidereb ten: Lagos Sputapoma vent sé Bes
Bigaaion OM Ata DO) BA UCLA ere: (ratio te Faeqet #
a | Yr Ka ee ee sha Pera de
ahlogucdto hon bite «eth a miiae ben ca qome Yoan
Soe (3) ‘eal tiges le amen Laat Lacan init hw wid. |
t =I Oty SO RO wore noe TLE Pag met Sorouts.d Pay bint f
et: ' | m aa , Febr ts
8d Atw tawe' Bera) cow eced an
QMGB 7,
Potting sab Lened smiby tod
6 ned ane) tans Yee Re:
FLOR aeonee ee tis a Pe POory
Rost wieokray bee ek Capa
B dotrw to ,malo Lilane mo melo iog enon ~ ion baloasdan et
Ro A aN ROR Oat best
wer ue
iis duet *% Jk
ota bows oh
F a
selooce aot
fas “
fi us
' J 7
a fi Ton
oO y) i) A
1il
Sthenelanella, in tubes Travisia
Terebellides and others
SUMMARY.= The sample resembles that in III-7, but is represented
with fewer kinds of animals.
IiI-8. Sta. 3209-55. In 560 feet. OPG took 1.05 ecuft of medium
green shelly sand. The screenings consisted of considerable rubble,
weighing 620 grams (wet weight); there was considerable black debris
in the form of algal bits, shell fragments and other biologically formed
material.
Echinoderms include:
Amphiodia (Amphispina) urtica - 191
Amphipholis squamata - 1
caudate holothurian - 2 large
Crustaceans include?
amphipods, about 40, with phoxocephalids:
Heterophoxus spe A-4
Pontharpinia sp. H-10
brown ostracods - 2
cumaceans - 5
isopod - 1, ovigerous in tube
Mollusks include many smaller pelecypods and gastropods, a tiny
chaetoderm, and many dead shells
Echiuroid =- 1 small
Sipunculid = 1
Polychaetes include?
Aricidea Pectinaria californiensis - 34
Artacamella hancocki Pherusa
Chloeia pinnata =- ll Pista, in tubes - about 24
cirratulids - many Prionospio pinnata - 4
Drilonereis Scalibregma
Glycera =- 5 Spiophanes - several
Glycinde - 2 various spionids
Harmothoe lunulata var. Sternaspis - 4 juveniles
Lumbrineris cruzensis - 4 Sthenelanella uniformis - 4
maldanid - 1 or more Terebellides
Megalomma and others
Nephtys = several
?Nothria - 12
Owenia
SUMMARY.= Echinoderms and smaller polychaetes are the most conspicuous
and abundant animals.
IIlI-9. Sta. 3001-55. In 489 feet. OPG took 1.89 cuft of sticky
gray clay. The screenings consisted of only numerous kinds of smaller
animals.
Echinoderms include:
Amphiacantha amphacantha - 5
Amphiodia (Amphispina) urtica - 4
Amphipholis squamata - 5
_Amphiura seminuda - 1
Crustaceans include various kinds of smaller entomostracans, with
phoxocephalid amphipods:
Harpinia sp. A-3
Heterophoxus sp. A-7
Mollusks include smaller gastropods, pelecypods, a few Dentalium, and
some chaetoderms.
sr Peele FNS
“aaa
mitbect te fui a0 ae a0 Pew ob ‘ae 'O
seid: eldateblanoce. Bo. besedsnvo Santee nen: eft
DM) BeIeh: toric eliunebieaas, saK ore? - Utah
hese UWileotgolots tette ae hihconbaual fi Bete gag.
¥
Bete ie ee a ee oe ta
Vit? 4 eBhogotd say ‘ban aHoawwse. Og xO
y ar aet Se ar abet 8 ei tase sane
*~ Be Leste fated) is |
ag tings =. andi ih) feu
LBLBV OE ee gS
rgb Qe Evol Tay,
eek imevsst B+ Bigusanete
; Pos siarot bas, ue Ls AL arert
eK a 1s0” H sobitisdeve’
Bk . weiss baa
Dptotse 10 Yive GB.f Sloot 8G eest OGR a! <S84L008) sane)
wef Lene to ebati Bros Onis ns eee has
0
Gy #
‘i * asta |
| C* aR
aaey
“da bw. lasnnoatatectodns festa to abain “ehohiay
a Hes gone
i
: % mn 4
silitiut iS A
. s a
Baa ied wee a pidaianion venice:
112
Nemertean = 1 or more, none conspicuous
Polychaetes (most abundant and diversified) include:
Aglaophamus Lumbrineris spp.
Anaitides Pectinaria - many
capitellids Prionospio spp.
EBuchone Rhodine
Glycera other spionids
goniadid Terebellids
Laonice and many other kinds
SUMMARY.- The sample is characteristic of the shelf fauna; there are
many kinds of smaller animals.
TiVO WSitas 5205-55. In 555 feet. OPG took 2.08 cuft of silty,
green mud. The screenings consisted largely of various kinds of animals
and tubes, and very little inert debris.
Echinoderms includes:
Amphiacantha amphacantha - 4
Amphiodia (Amphispina) urtica - 3
Amphioplus strongyloplax - 2
Crustaceans include many amphipods, ostracods, and other kinds.
phoxocephalid amphipods include:
Harpinia sp. A-3
Heterophoxus sp. A-2
Phoxocephalus sp. A-2
Mollusks include;
scaphopods: Dentalium rectius - 2, and another kind
chaetoderm = 4
pelecypods, with Nucula, Acila, Tellina, and others
gastropods, smaller shells
Hydroid colonies, some on mollusk shells, Acila and Nucula
Nemertean - 1 larger and 1 smaller
Leech, resembling a flatworm, with suckers at either end - 1
Polychaetes include:
?Amage - 1 larger and 1 smaller large maldanid, in tube
Anaitides small maldanid
Ancistrosyllis Mesochaetopterus, with tube
Aricidea - 5 Nothria pallida- 3 in mud tubes
capitellid Onuphis parva- 50 in mud tubes
Chloeia pinnata - 8 larger Panthalis pacifica -2 in tubes
cirratulid Pectinaria californiensis -ll
Cossura candida Prionospio pinnata - 4 smaller
flabelligerid =- 2 in scaphopod shell Sphaerodorum
Glycera Spiophanes - 5 smaller
Goniada - 5 spionid, perhaps Nerine
Harmothoe - 3 juveniles Terebellides - 5
?Laonice and others
Lumbrineris ?cruzgensis - 3
SUMMARY.- The largest and most conspicuous were tubes of Panthalis,
maldanid and a large nemertean. The species are diversified with
none unusually abundant.
III-11. Sta. 5204-55. In 729 feet. OPG took 2.08 cuft of fine
silty green mud. Screenings were largely various kinds of animals.
eres ay
RGR ptm pen eres
teiuloat Sele gist biuand bic ypetii
ibiegins <a ro. Be cae 1
eb ECC edavat ea
eiofol tqulige ae Bila: - ‘ ye
e246 pieds “pomiet Tlode ear Te" Todtekeres osteo ek: wie edt
aalamt ora 9 vol Lame 2b tind
gite to tivo 50.8 Anog HQ tees Gad ai .a& 802 ste we '
Selamiss to: ebatxt evot aid 1 ylegrag): ‘Peo ws ain: Bgtiaewnoe, adit:
‘ (1eteeae, teint aLvd hl Yor Ree ae
. tebe loot
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Se age rior bt cesaeaaa
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. a . rot Cegie ih hee re gira lok
oa f - bue serttie’ ta e79poua ctw cmp wael 2 Peri:
am) tebulenine
edud ni ,bicebiem save’): meen C Rasen Berea. ney te ORs
hbiashbien [lame
tote _eiuvetcotesdoorea
oe pi-é vebiifleq eiadton
fede bom Gt Of «ayzaq EFegund |
pours . otf S- polticag atacs sce HY pee i toe aS a
EH gisnetasotlas alnantaoet .
gma b - Keeani olqaonorty il iG
Whusobonesige. | Khate boqodgeos x
». sefiame di- TOLGs ne es
1 Suite egadteq: os role
er ac gobi Ledaxet i aothneval %
P4endo Bie ? ;
, A = alaneguecdt
aeiiedigkd lo aecut e'taw RiSOLO ‘Seay TAom- Dis teogued .
deTw bemlersvib et soloeda Sut inet e Bh ra a baa
ent TOinTsy Beh Kos fo wteet- sy nee -agebogs, 8
wadaming Yo abate ‘aro tay viegrat ore “Raoul Aes net
; wall sare : 7 §
re, sur
113
Echinoderms include:
Amphiacantha amphacantha - 1
Amphiodia (Amphispina) digitata - 47
Amphioplus strongyloplax - 2
Crustaceans include:
many amphipods with phoxocephalids:
Harpinia sp. A-3
Heterophoxus sp. A=-9
Amphipholis squamata - 78
a juvenile asteroid
holothurians - 4 juveniles
Pontharpinia sp. B-2
Pontharpinia sp. B-22
Metaphoxus sp. A-9 Pontharpinia sp. J-17
Phoxocephalus sp. A-1l Pontharpinia sp. Y= 1
' isopods with at least 4 species and S52 individuals
ostracods, with 44 brown oval, and 9 white rectilinear
cumaceans = about Sl
copoepods = one calanoid and one parasitic
Mollusks include?
chaetoderm = 6
scaphopods = 2 living and some dead shells
pelecypods with:
Acila = about 36 living
and many others, especially smaller, living and dead shells
gastropods - various smaller shells
Echiuroid, Thalassema - 1 large
Nemerteans = some
Sipunculid =- 1 larger
Leech, resembling a flatworm, but with suckers =- 2
Polychaetes include?
SUMMARY. -
gray clay.
kinds of animals.
Amaea occidentalis
Ammotrypane
ampharetid = 2
Anaitides = larger
Aricidea =- 10 or more
Brada
capitellid = 2 or more
Chioeia pinnata = 37
cirratulids = many
Cossura candida = 2 or more
Drillionereis = 1 or more
Glycera = 12
Goniada = 4
Haploscoloplos elongatus - 5
Harmothoe
Laonice
Lepidasthenia
Lumbrineris spp. = 10 or more
Maldane =- 5
Maldanids, of several kinds
Melinna
kinds of polychaetes.
Mesochaetopterus, long tube
Myriochele gracilis
Nephtys - 6 smaller
nereid fragment
Nothria - several larger
paraonids = some
Pectinaria californiensis
Pholoe = 9
Pista =- 2
Prionospio pinnata - many
Prionospio spp. - some
Rhodine
sabellid, in tube - 1 or more
Scalibregma - 3 small
Sphaerodorum minutum - 4
Spiophanes - many
Sternaspis - 1 tiny
Terebellides - 4
terebellid fragment
Tharyx - several
and others
The large animal was a large echiuroid, followed by a
Ssipunculid; the most numerous were 2 kinds of ophiuroids and several
Tii=-12. Sta. 3002-55. In 715 feet. OPG took 2.77 cuft of sticky
The screenings consisted of about a pint of many different
~ ey foOSRE alt nel, ft
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114
Echinoderms include:
Amphioplus strongyloplax - 4 Brisaster townsendi - 1
phipholis squamata - 1 holothurians - 4 juveniles
Crustaceans include diversified entomostracans, with phoxocephalid
amphipods 3
Harpinia sp. A-2
Heterophoxus sp. A-&
Mollusks include?
Amygdalum pallidulum = 5
Acila castrensis
Macoma sp. - dead shells
Volvulella cylindrica- 2
Nemertean
Enteropneust
Polychaetes include:
Glycera Nothria
Maldane Onuphis
Melinna spionids, various - numerous
Mesochaetopterus, in long, coarse tubes and others
SUMMARY.=- This fauna is characteristic of moderate depths in mud
bottoms.
III-15. Sta. 5005-55. In 974 feet. OPG took 2.45 cuft of dark gray
clayey mud. The screenings consistedof about 2 pints of material,
with many different kindsof animals, including larger kinds such as
echiuroid, brissopsid echinoderms, and various polychaetes.
Echinoderms include:
Brisaster townsendi - 2
Amphipolus strongyloplax - 3
Amphipods, with phoxocephalids - Harpinia sp. A-3, and Heterophoxus sp. A-2
Echiuroid - 1 large
Many polychaetes of diversified kinds
and other animals.
III-14. Sta. 5004-55. In 1344 feet. OPG took 2.2 cuft of clayey
mud. The screenings consisted of about 1 1/2 pints of animals of various
kinds, including 3 echinoids, a few smaller crustaceans, diversified
annelids, and others. The echinoderms are?
Brisaster townsendi =- 2 Brissopsis pacifica- 1
III-15. Sta. 3005-55. In 1630 feet. OPG took 2.83 cuft of clayey
mud. The screenings consisted of little except foraminiferan tests,
a small sea pen and some polychaetes. They include:
Ancistrosyllis onuphid
Brada Paraonis
capitellid Pectinaria
Myriochele polynoid
SUMMARY.= In spite of its large size, this sample was unique for having
few kinds and numbers of animals. There were no echinoderms,
mollusks or smaller crustaceans, and polychaetes were few.
III-16. Sta. 5006-55. In 1920 feet. OPG took 2.77 cuft of clayey
mud. The screenings consisted of many foraminiferan tests and various
kinds of animals.
i, bi 28
as went tie see
BEL piegasorxonts er
its i j i
Spe Tess FH BILSON 2) LO
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Sever’ eth etdoeen
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& 4 - pi 4 ae Ya Z 5 palate aye Ni he
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oh
i ing 20) Roe
Heme iio 6 tae PERI TAS ELE OLE 9 RC ioe, 1 Pe st
f hihi mah oy Pd TLL EO ee Bich are ea
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3 ( . “ " ,
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5 sat
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‘
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suite ‘ Peo gi > Lette: Pe a ee (otra deni
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115
Echinoderms include:
Amphipholis squamata - 1
Astropecten californicus - 1 juv.
i
Ophiocynodus corynetes - l
Mollusks include:
chaetoderm = 4
gastropod, perhaps Mitrella permodesta - 6
Echiuroid = a large proboscis only
Polychaetes include:
ampharetids - many cirratulids - several
Ancistrosyllis - 1 or more flabelligerid - 1
Aricidea - 1 maldanids - several
unknown orbiniid- 1 unknown Polydora - 1
capitellid - l Terebellides
?Chone - 1 and others
SUMMARY.= This is representative of deeper water and resembles that of
about the same depth and sediment of San Pedro Basin, above the
sill depth.
SUMMARY OF ZONE III-1 to 16.- The fauna of the northern end of Santa
Monica Bay is characterized by animal species existing in sandy or
muddy bottoms. In shallower parts (to 150 fathoms) there are many
smaller, smooth ophiuroids, diversified shallow-water polychaetes,
and smaller crustaceans. Deeper parts, represented by samples 14
to 16, are characterized by the presence of burrowing echinoids,
echiuroids, and different kinds of polychaetes.
IV-1. Sta. 2997-55. In 600 feet. OPG took 1.89 cuft of fine
dark green clayey mud. The screenings consisted of many animals of
smaller sizes.
Echinoderms include?
Amphiacantha amphacantha - 4 Amphipholis pugetana - l
Amphiodia digitata - 25 Amphipholis squamata - 5
Amphiodia urtica - 1 Amphioplus strongyloplax - 4
Amphiodia psara - 5 large Ophiura lutkeni - &
Amphiodia rugosa - 12 Brisaster townsendi - 2
Crustaceans include various entomostracans, with phoxocephalid amphipods:
Harpinia sp. A=-7 Phoxocephalus sp. A-5
Heterophoxus sp. A-4 Pontharpinia sp. Eel
Metaphoxus sp. A-9
Polychaetes include many diversified kinds, especially species in
Chloeia, Pectinaria, maldanids, and others. See also the next
sample.
IV-2. Sta. 5181-55. In 648 feet. OPG took 2.2 cuft of gray green
silty mud. The screenings contained many animals of different kinds
but rather few foraminiferan tests.
Echinoderms include:
Amphiacantha amphacantha - 6 Amphiodia urtica - 16
Amphioplus strongyloplax - 4 Amphipholis squamata - 1
h- i \ [eo oe i r Py]
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116
Crustaceans include various kinds of amphipods, cumaceans, ostracods
phoxocephalid amphipods:
Harpinia sp. A=6 Phoxocephalus sp. A-3
Heterophoxus sp. A-4 Pontharpinia sp. E-1
Metaphoxus sp. A=-5
Mollusks include;
Chaetoderm = 2
Shells of Dentalium, Acila, Amphissa, Tellina, and many others
Echiuroid = 1 large Thalassema
Nemerteans - 2, one in onuphid tube
Sipunculid = 1 in gastropod shell
Polyclad = 1
Polychaetes include?
ampharetids = 5 Magelona
Anaitides- 1 Maldane - 3
capitellid large maldanid, in annular tube
Caulleriella Myriochele gracilis - 2
Ceratocephala c. americana Nephtys ferruginea
Chioeia pinnata = 10 Onuphis, in tubes - about 20
Drilonereis - 5 Pectinaria californiensis - 56
Buclymene Pista, in tube
flabelligerid, in tooth-shell- 2 Prionospio, nr. malmgreni - 2
Glycera ?americana - 1 large Prionospio pinnata- 2
Glycera capitata - 2 Rhodine
Goniada = 2 Sphaerodorum - 2
Harmothoe lunulata var. - 2 spionids of several kinds - many
Laonice - 2 Terebellides
Lumbrineris cruzensis - 2 Travisia ? olens - 1 large
and others
SUMMARY.=- The largest animal is an echiuroid, the most conspicuous
Pectinaria and onuphid polychaetes. The fauna is diversified and
abundant.
IV-3. Sta. 5000-55. In 885 feet. OPG took 2.2 cuft of gray clay.
Screenings consisted of about 2 pints of materials containing foraminiferan
tests and many different kinds of animals.
Crustaceans include some amphipods, isopods, a commensal copepod and
perhaps other kinds
Mollusks include:
scaphopods with Dentalium
shells of pelagic pteropods
many smaller gastropods, especially caecids
Thalassema - 2 large
Sipunculid - l large
Polychaetes include;
ampharetids = many onuphid
Brada Pectinaria
Chloeia polynoid
maldanids Rhodine - several
Marphysa, resembling conferta Terebellides
Melinna and others
Nothria
SUMMARY.- The largest animals are Thalassema, followed by a Sipunculid.
The most diversified are various kinds of polychaetes.
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Do etene YAIR To ttc 8. Laat 1d O80 dow, ape ae x.
‘smile speed He iy ac lg a BLO sm. Ys Slits Sah Riordan,
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Bayi: “a bin Bodeioo Law OB. BOGOR Lg BMH ers ore yay
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117
IV=-4. Sta. 5180-55. In 1091 feet. OPG took 1.7 cuft of shale,
pebbles, sticky green mud and rubble; the screenings consist of about
8 liters of various kinds of debris and some larger animals, of which
the largest were dark red Thalassema, various kinds of other wormlike
animals, and smaller crustaceans.
TV-5. Sta. 5179-55. In 1201 feet. OPG took 2.01 cuft of green
gray mud with odor of H,S. The screenings retained many polychaetes,
especially Chloeia, maldanids, and others, also mollusk shells and
other animals.
IV-6. Sta. 5178-55. In 1428 feet. OPG took 2.335 cuft of green
gray, very sticky mud. The screenings included a large echiuroid, 4
brissopsids, a few ophiuroids, some onuphid and maldanid polychaetes,
and many other kinds of annelids.
Echinoderms include: Brissopsis pacifica - 2
Brisaster townsendi - 2
IV-7. Sta. 2999-55. In 1486 feet. OPG took 2.835 cuft of fine
dark sticky mud. The screenings contained many foraminiferans, muddy
tubes of annelids, and other animals.
Mollusks include shells of Dentalium, gastropod, and a larger chaetoderm.
Polyclad - 1 smaller
Polychaetes include:
ampharetid in thick mud tube Onuphis ?vexillaria - many
Ancistrosyllis paraonids
Drilonereis Pilargis, fragment
Euclymenid Prionospio pinnata
Glycinde Sigalionids
Goniada and others
Lumbrineris spp.
IV=8. Sta. 5399-55. In 1565 feet.. OPG took 2.58 cuft of fine
green sticky mud. The screenings retained many foraminiferans and
numerous larger animals of various kinds.
Echinoderms include?
Brissopsis pacifica - 2 larger
Amphiodia (Amphispina) urtica - 3
Amphipholis squamata - 1
Crustacean - a parasitic cyclopoid copepod
Mollusks include largely dead shells, especially of Amphissa
Glottidia albida - 2 tiny
Echiuroid - 1
Nemertean - a large red-ribbon species
Polychaetes include:
Ancistrosyllis Maldane - about 15
Aricidea uschakovi - 2 Onuphis vexillaria - 1 large
Chone mollis - 1 larger Paraonis - 2
Lumbrineris = 1 small and few other smaller kinds
aplede aeRO, XS % dene.
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ka o-ongenh Fe ‘Ertan boakebbte apminnences an . WL hi)
/ bos at tesa Mase oom Misi, ee ee miner on
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=
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aes eatoylog biinshs aE, Date Pie sing, ‘Biehl ee
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At ih
; cenit to dts. oe g ae BaQ tant beet a
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ae
5 3 atando bene
PiOhis, 2H ties Bays. OOM ahs) oon ‘duce eat Laas cake
Arne. eras @hiatmaro? poem berth ewe Bariaeenoe y's
! 31) hy) Pa Leb at
= :) it z im
nao
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118
IV-9. Sta. 3177-55. In 1800 feet. OPG took 2.14 cuft of green
mud. The screenings consisted of 2 translucent pale echiuroids, 2 or
more nemerteans and polychaetes including:
ampharetids Prionospio
cirratulid a large terebellid
Goniada
IV-10. Sta. 3176-55. In 2585 feet. OPG took 1.95 cuft of green
mud, sand and shale. The screenings consisted of about 135 liters of
black rubbly soft muddy to shaley debris, and about a liter of
foraminiferans with fine dark rubble. ‘The shaley lumps are more or less
penetrated by larger (perhaps pholad) to smaller (perhaps sipunculid)
burrows. There are 2 larger clumps of siliceous sponge, and a dead
valve of pecten with fenestrated valves. The living animals are few.
Mollusks include:
Lucinoma annulata - 1 living and 1 dead shell
Mitrella
Macoma
a very small ophiuroid
orbiniid polychaete
SUMMARY OF IV-=1 to 10. The fauna in Santa Monica Canyon, in 600 to
2385 feet, resembles that in Redondo Canyon (zone V) but is less
diversified and sparser.
Vel. Sta. 2725-54. In 345 feet. OPG took 1.15 cuft of coarse
green shelly mud with some rounded stones. The screenings consisted
of about 8 liters of fine to coarse gravel, shell fragments and various
animals and matted masses of white spicules, like those of sponge,
but no living sponges.
Echinoderms include?
Amphiacantha amphacantha - 8
hichondrius granulosus - l
Amphiodia (Amphispina) digitata - 359
Amphiodia (Amphiapina) urtica - 5
Amphioplus hexacanthus - 3
Amphioplus strongyloplax - 3
Crustaceans include many diversified entomostracans
Mollusks few, include:
scaphopods, pelecypods uid gastropods
some chaetoderm
One sea whip
Echiuroidea - 1 large deep green
Polyclad = 1
Polychaetes include:
Aglaophamus onuphids, in tubes
Brada Pectinaria californiensis
Haploscoloplos elongatus polyodontid tube - 1 larger
Laonice sigalionids
Lumbrineris, 1 larger Sternaspis
maldanids Terebellides
Nephtys, perhaps ferruginea and others
‘ bEL yy Be |
oy teeta: to atv. Ste € toot wis. rie nate
re “a o vebloawzites te hs: a Py gh peel
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i, te ayertl tf suede To-betelanoe eantressse sat ohana
WW Kesil a is Te Senet > SN hee Labit aa 0 fh ohbuse thes,”
S40l 40 ogom exe eqenl vetade’ ent, we bidis, 14a) OnLy Shh en
(biivonugte aqadean) seh beams aks (balodg aqacieg), teytal 2a
teob &- bas, ,apnora sigeol hts fia: tient 0 rteayyat,S. ote ea
vet es wiuates galved alt. rarer Hed ante gies Ao tw rem
-)
Dy ewes
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Si: eae | Dn eM stax teptac nae
bes at ; CO MAAlis Ve ae i ote s iD Oe
ee oe .GOd nt jmoyered “abt aol! ‘tana fl laa oD WwOtoae. LW
Ve eye et. Sanh) vy aOR) Moss: shaohen oa Faget Aaldnecas ew
: BAN aren bata Mies
is a y rv @ ‘, ’ ; a
i weenises to ttya SL.f 2008" DT thet EEA" peso ‘Baas sq
o> S@tetenao deetasebes att? .<pecose Bobet moe EEE. pate
BGhtav Dak Htnemye%t (bloke .levaerh: seios Os) wee Ta Bist t
e senmoge “le azodd wlll .eeltotce #2 ikaw to Qpekam Sect amt
an | ae te. tae leashes “
: > : ie, ‘ ; fis we
By ei
a ae! ? by oa ft
As 1 ‘ ; f b) is ; ‘ ene
ry iO SCO he Ree: ee et Vv cee Meas Ohiads
“sabe
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119
SUMMARY.=- The largest animal is an echiuroid; the most abundant or
conspicuous are an ophiuroid and various kinds of polychaetes.
The number of species is estimated at 45, that of individuals
about 200.
V-2. Sta. 5165-55. In 360 feet. OPG took only a very small
sample of gray mudstone from the wall of the canyon.
Echinoderm - fragment of an ophiuroid only
Crustaceans include an isopod, an ostracod, and 4 amphipods (2 caprellids)
Mollusks include a small gastropod and a juvenile Yoldia
A few hydroid stems
Nemertean - 1
Polychaetes, largely single individuals, include:
Anaitides, juvenile Magelona, pouched
Armandia Nereis procera
Capitella ?capitata Nothria, perhaps elegans
another slender capitellid Onuphis
Chone, perhaps mollis Prionospio, nr. malmgreni
Lumbrineris Tharyx, perhaps parvus
SUMMARY.- This small sample contains animal species resembling those
in shallow bottoms of Zone I (see above).
V-5. Sta. 2192-52. In $66 feet. OPG took 1.51 cuft of fine mud
and sand. The screenings consisted largely of many kinds of animals,
especially annelids, smaller crustaceans, smaller mollusks, and
others.
Mollusks (identified by Dr. Norman T. Mattox) include:
Cadulus fusiformis = 1 Solemya panamensis - 1
Dentalium rectius - 142 Tellina bodegensis - 1
Acteon punctocoelata - 1 Thyasira barbarensis - 3
Bittium catalinensis = 1 Yoldia scissurata = 13
Fusinus arnoldi = 2
Turbonilla sp. - l
Volvulella tenussima = 6
Polychaetes are very numerous and diversified, comprising no less than
40 species and many hundreds of individuals; Pectinaria, larger
terebellids andother tubicolous kinds are particularly conspicuous.
SUMMARY.=- It is estimated that the sample has about 60 species and
950 or more individuals.
V-4. Sta. 2727-54. In 398 feet. OPG took 1.76 cuft of green
sticky mud. The screenings consisted of many ophiuroids, annelids
and dead and living mollusk shells.
Echinoderms include:
Amphiacantha amphacantha - 25
Amphiodia (Amphispina) digitata - 107
Amphioplus hexacanthus - 5
Amphioplus strongyloplax - 5
holothuroids - a larger (90 mm long) and a smaller (35 mm long)
tailed kind, perhaps Molpadia :
Crustaceans include various entomostracans, with;
phoxocephalid amphipods:
Metaphoxus sp. A-19 Pontharpinia sp. E-13
Heterophoxus sp. A-12 Pontharpinia sp. J-l
Phoxocephalus sp. A-3 Pontharpinia sp. Y-2
er z 7 a } ie ‘ Nye
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gon Yireivols eq” ots: abit a Bre bak
efseqe O85 teas Eas elques BS ORI
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BORE SOI. 4 REDON
; os a.
pee ORY. ee ae ie: rex Be i / ¢ ee ¥ Bcc Rid ie
Mt ‘7 [elie & ne A ACO. | MOAT i fg a *
, cee HqEctem 4 bathe
i
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5 jaan eee Cem RLY, Sake
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Bega Bhake sides
Luh. a2 G8 BASLE A fakes facet
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120
Mollusks include:
Amygdalum pallidulum - 21 Tellina
Dentalium rectius - 2 white bubble-shells
Cadulus = 6 Acila castrensis
Cuspidaria = 2 or more various other gastropods
Leda and pelecypods
Sipunculid
Polychaetes include?
Aglaophamus Nephtys ferruginea - 7
Ammotrypane Panthalis, in large tube
Brada Pectinaria - 6
Ceratocephala Pholoe
Chloeia Prionospio pinnata - 4
Glycera capitata Prionospio, nr. malmgreni
Goniada ?brunnea - 1 larger Telepsavus sp.
Laonice Sternaspis
Lumbrineris bicirrata Sthenelais
Lumbrineris cruzensis Tharyx
maldanid Travisia
Megalomma and others
SUMMARY.= The sample is characteristic of the shelf fauna; it is
estimated to have 70 different kinds, with 800 or more individuals.
V-5. Sta. 5585-55. In 401 feet. OPG took 1.78 cuft of very fine
sandy green mud. The screenings consisted of much biological debris,
fragments of shells, tubes of animals and fragments of ophiuroids,
also many tests of arenaceous foraminiferans.
Echinoderms include:
Amphiacantha amphacantha - 24
Amphiodia (Amphispina) urtica - 85
Amphioplus strongyloplax - 7
Amphipholis squamata - 20
Amphipholis sp. - 1 juvenile
Ophiocnida sp. = disk
Brissopsis acifica - 1 larger
holothurian, white - 2 juveniles
Crustaceans include many amphipods, cumaceans and other entomostracans.
Phoxocephalid amphipods include?
Heterophoxus sp. A=7 Pontharpinia sp. E-21
Metaphoxus sp. A-18 Pontharpinia sp. J- 4
Phoxocephalus sp. A-4
Mollusks include many smaller living gastropods and pelecypods, also
some Dentalium and 3 small Aglaja
Nemertean - 1 larger in tube of polyodontid (worm), and other smaller ones
Polyeclad = 1
Polychaetes include:
ampharetids of several kinds, some in tubes
Brada
capitellids - several small
Chloeia pinnata
cirratulids of several kinds - many
Glycera, perhaps capitata
Goniada - 2
Harmothoe lunulata var.
Laonice = larger
Leanira = 2
© Biegnlhy otasente
Anasnet ae s3M ~OLgaOda, ee Ciera i
a BE Bes eres s
a poms Pea nS:
e alaleneiga,
wh ie
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ris: - Wi 4 8 ba Nien ire Fae es
Eraee “Wtbak etem to DOG civ.ty ee
Srey kb) Ne a ace Gaieht: bid
“syatades Esotpol he hos to bestetento Rony
a & “y 4 Per Z ory f beer . m4 a ae han T) figs hE ik es pi air Ni iis ay
% ie As : H 7 Z ; rp ttnite es De
‘ eel kt fos
3 eneepaiwe et ick os sump wisn |
& alsa
Sbg onde somerne: tedee bre }
; 7 on ; A cand peat Reet Reeth
oo eh cae 4
ice
ia va fh
Gata iahoqroeleo baa shngendams a Ey id iS
; pe) BEB LSA. | Faun é bias ‘get
eno selicws “eto bas. < (avrow) Bidmobey Tego eC iis: tie Pon
Reciic
Sareven:
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121
Lumbrineris ?bifilaris
Lumbrineris, other species - several
Nephtys ferruginea - 3
Owenia
Panthalis pacifica, in tube
paraonids, including Aricidea - several
Pectinaria californiensis - many
Pherusa
Phyllochaetopterus prolifica, tubes
Pista, in tube
Praxillella, perhaps gracilis, in sandy tube
Prionospio, perhaps cirrifera
Prionospio pinnata
sabellid
sigalionids
Sphacrodorum minutum - 3
Spiophanes missionensis
other spionids = many
Sternaspis
Terebellides
Tharyx ?multifilis - 3
Travisia=- 1 juvenile
and others
SUMMARY.- This sample is characteristic of the shelf fauna; the number
of species is estimated at about 70, that of individuals at 950.
V-6. Sta. 2726-54. In 420 feet. OPG took 2.77 cuft of green
sticky mud. The screenings contained many ophiuroids, resembling
those in V-5, a larger brissopsid urchin, many different kinds of
polychaetes and some mollusks, including Dentalium rectius. The
most conspicuous animals in the sample were Chloeia pinnata and
Pectinaria californiensis. The sample was partly spoiled during
processing.
V-7. Sta. 5164-55. In 480 feet. OPG took 2.83 cuft of black mud
with odor of HoS. The screenings consisted of much detritus, broken
tubes of Pectinaria, mollusks shells especially those of olive and
other smaller kinds.
Echinoderms, with 4 small ophiuroids only, include:
Amphiodia (Amphispina) digitata - 3
Amphipholis squamata - 1
Crustaceans include3
caprellid amphipods - 5
phoxocephalid amphipod, Pontharpinia sp. B-l
ostracods = 2
pinnixid crab - 2
Mollusks include:
Dentalium rectius - 30
Yoldia scissurata - 27 larger
Solemya - 2
various other gastropods and pelecypods of smaller sizes
St a
i air
J CoOL 5
egua) when pt
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‘ ¢ ey
<e ay sins
me N
7 C y Bt no “ge 2 id i } : | . | | |
Paka sat ocuewas ctadal eit ote kai sonnet. 4 tian a RAT Sa
dsl alauoiy for: to Na iol .
re bh baich Biss:
\
paces x age
Guise ow ih
pith oeger oie
gir Geil per
eee ¢ Lelie)
ay at Sauipe oni
ila aN ae re vd. Fr ndenat
DSN 8 Bunt MOAT ree :
Eb get wes
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|| Menote: . eve)
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‘BS AnAgOw ‘BLT one
= SOD Oba, amas
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122
a small hydroid stalk
Nemerteans include a larger Cerebratulus and 10 smaller ones
Polychaetes include:
Amaea occidentalis
Anaitides
Ancistrosyllis rigida - 47
Aricidea, various kinds - 42 or more
Brada - 1 larger and 1 smaller
Capitella capitata - 14
Chloeia pinnata - 5 larger and 18 smaller
Dorvillea articulata - 1
Glycera (more than one species)- 8 larger and 4 smaller
goniadid - 3 larger
Haploscoloplos elongatus - 2
Harmothoe lunulata var. - 2
Heteromastus filobranchus - 24 larger
Laonice - 1 very large
Lepidasthenia, commensal perhaps with onuphid - 2 larger
Lumbrineris bifilaris - 1
Lumbrineris cruzensis - 19, some ovigerous
Lumbrineris index- 1
Magelona, pouched - l
maldanid - 2
Nephtys ferruginea - 4
Nino& - 1
Nothria pallida, in thick mud tubes - 8
Onuphis ?parvus, in mud tube - 1, ovigerous
Pectinaria californiensis - 95
Pilargis maculata = 1
Prionospio ?cirrifera - 55, ovigerous, though small in size
Prionospio spp. = 29 or more
syllid =- 1 or more
Tharyx - 4 or more
SUMMARY.= This sample is estimated to have about 70 species and more
than 1000 individuals.
V=-8. Sta. 3586-55. In 603 feet. OPG took 0.44 cuft of fine dark
green sandy mud. The screenings consisted in part of many small black
cemented nodules with attached arenaceous foraminiferans, many
echinoderms, a large nemertean, echiuroid, and many other animals.
Echinoderms include?
Brissopsis pacifica - 3
Spatangus californicus - 1
Amphiacantha amphacantha - 1
Amphiodia (Amphispina) urtica - 48
Amphioplus strongyloplax - 3
Amphipholis squamata - 13
Crustaceans include?:
cumaceans, with at least 2 species - many
ostracods, with at least 3 species, most brown - many
amphipods, many with phoxocephalids:
Heterophoxus sp. A-5 Pontharpinia sp. E- 8
Metaphoxus sp. A- 7 Pontharpinia sp. J-2
Phoxocephalus sp. A-2
isopods - some
Echiuroids include a large green, and a smaller green one.
Nemerteans include:
Cerebratulus - 1 large, ribbonlike
smaller kind f EMCEE y
a
. erst aes
ay
wellaue 8
aoliane es rs efio nasid Caron)
i ae semied 6
Ain
seated as Sedona loheges a
} i, eee: CSN
TeRsaL: SB ~" bEttaieo date Cael tahsnneagdiy oe
quotes AMC “PGE arc iB
rc 7 ae Sn aa cern ot tens Gell
ELS a Lysis (otha
ab entt too gto be. O Slo’ TO heat g08 a
oat {lems yosn to drag mk, beteteton AoE e8.
ie Viet gates Oo kitinaco RV ORONS fete Beagesis oe ae
“sR laminn ened wtler amt Dota bios here? cARet semen ce
| qiad - Ketouge & teeel ta cttw,
nwo ~ awoad duom peetooge:% ah $a aotw
tetlisdqvooxody: ad hy (Sant, ead
pint gqedtiiod ° eg
BL Bashoet ag Oe
123
Polychaetes include?
Ancistrosyllis paraonids of several kinds
capitellids Pectinaria
Chloeia = 21 or more Pholoe
Cossura candida Prionospio pinnata
Glycera sabellid
Goniada Spiophanes
Haploscoloplos Terebellides
Magelona large terebellid in silty tube
Maldane Tharyx, perhaps multifilis
_Nephtys and others
Onuphis
SUMMARY.- The largest animals are a nemertean, an echiuroid and
echinoid echinoderms; the most numberous are various kinds of
annelids.
V-9. Sta. 2789-54. In 564 feet. OPG took 1.7 cuft of sandy blue-
gray mud, several larger stones and much shelly rubble in which many
kinds of animals were buried.
Echinoderms include a brissopsid urchin and some ophiuroids.
Mollusks include 7 living Tellina, other kinds of pelecypods and some
gastropods.
Polychaetes are numberous and diversified, with Chloeia, polyodontid,
and Travisia the most conspicuous.
V-10. Sta. 2990-55. In 657 feet. OPG took 5.08 cuft of fine
black mud. The screenings consisted almost entirely of various kinds
of animals.
Echinoderms include:
Amphiopholis squamata =- 2 juveniles
Ophiothrix spiculata - an arm segment only
Ophiura lUtkeni - 1 juvenile
Crustaceans include phoxocephalid amphipods:
Heterophoxus sp. A-2
Phoxocephalus sp. A=2
Pontharpinia sp. J-1
Mollusks include many smaller shelled gastropods and pelecypods, also
some scaphopods, Dentalium rectius.
Nemerteans = some
Polychaetes include:
Aglaophamus Pectinaria californiensis
Anaitides Pholoe
Ancistrosyllis Prionospio spp.
Glycera Teleysavus 'spe''s
Laonice and. others:
Mesochaetopterus, large tube
Nothria pallida, in thick mud tubes
SUMMARY.- The largest animal is Mesochaetopterus, the most conspicuous
is Nothria pallida. The number of species is estimated at 50,
that of individuals at 350.
Vell. Sta. 2191-52. In 750 feet. OPG took 2.7 cuft of fine
sandy green mud. The screenings consisted of various kinds of animals,
especially polychaetes, Chloeia, Mesochaetopterus, various spionids,
cirratulids, maldanids and others. Mollusks were mouresentod by
_neleevnods. seanhonods and others.
add yPEte wi sore
se hionuiLdoe 12). tay Semen 8 eth sLeml ae TeBRtAS, eee
bifol wuattey o2a auctedmyrm dec ett ~dorreborisoe
=s¥ld “bres “to S340 NT. 2D aloodt DIO . Fee} POR hy henRe Te
qfuer Hothw ni dlddud St radeHnune th TR Oe WINGS i t
Abeta: sew a mht
eebLowr id fetta base aides biegeseiag 6 japuloals,
4 f is, abrby TONDO Se ee re YY byt on
2 BRO
BSA.
a jaaen AOR ahs
enii ‘In oto
ees on eg
“mbets erolvay ‘i
be BS Lire Vt 2 ¥
Vine Charnes Mia am 4 :
| oLbaeent ‘
rHhoanticme: feet we aon
RA .Ge Bsr
ad ‘ : . > _ , . mms
5 ne sab iy beh
“metn ~shoqysefeq Ons; eboqousesy ;, Bini
Jatsnetiross!
ssGgrotqends
uA WS
cay
yes c
otal HOE LA) ack
biel eres
124
V-12. Sta, 2358-53. In 750 feet. OPG took 2.89 cuft of light
colored clayey mud. The screenings contained many annelids, some
ophiuroids, a larger holothurian, and other kinds.
(“V-13. Sta. 2149-52. In 775 feet. QPG took 2.7 cuft of mud. The
screenings consisted of much diversified life.
Echinoderm - 1 large echinoid
Crustaceans include amphipods, ostracods, a copepod.
phoxocephalid amphipods with
Heterophoxus sp. A-1
Paraphoxus sp. A-1l
Phoxocephalus sp. A-1
Mollusks include?
Dentalium rectius - 2
Yoldia scissurata - 3
and few others
Nemertean - 1 or more
Echiuroid: Thalassema - 3 large
Polychaetes include?
Anaitides maldanid, in thick mud tubes
Ancistrosyllis Mesochaetopterus - 1
Chloeia pinnata - more than 60 Nothria ?pallida - 2
cirratulid Notomastus - many
Cossura candida- several Pectinaria californiensis -
Dorvillea = 2 ‘several
Glycera = 2 Pherusa spp. - several
Goniada - 2 polynoid
Haploscoloplos elongatus=- 6 Terebellides
Lumbrineris index - 6 large other kinds
Lumbrineris, other spp. - several
SUMMARY.- The species are typical of moderate depths of Redondo Canyon.
V-14. Sta. 2361-53. In 942 feet. OPG took 1.44 cuft of fine
green silty mud. The screenings contained many animals, with echiuroids,
annelids and ophiuroids, having resemblance to those in adjacent
samples.
V-15. Sta. 2148-52. In 996 feet. OPG took 2.8 cuft of mud.
The screenings consisted of various kinds of animals.
Echinoderm - an echinoid ;
Echiuroid: Thalassema = 4 large, deep red in life, length to 140 mm,
harboring a pinnotherid crab
Nemertean - 1 large
Polychaetes numerous and diversified, include:
Ancistrosyllis - several nereid
capitellids = many Pherusa spp. - several
Chloeia pinnata - about 50 Prionospio spp. - several
Lepidasthenia Travisia - l
Lumbrineris spp. - several many other kinds
Nephtys - several
SUMMARY.- The fauna resembles that in adjacent parts of Redondo Canyon.
(a) ms
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i
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i iw. slamina GITEOT: Healagios. Sand nae sci gaee
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; 4B EMEA LS eb sth eioimay to badelango Sank
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pent Ob C of Magia t ge tid: ine ba FEBD:, 4 one By. Piette ESSE)
re ve ‘dares Prd eae as VME Miike lec): Mey
* ‘ | | ; eT ale £
: SS epecbort be it thenevy brava ne
OL erate): Lr pea voe
LATO Tew. ‘qae AOUTO fy io = 8
Taievea «07a OtC CBOs See 9 CO! Ses aes
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Best ors ae | neddo % nue it SR ES SANs Bx
obmpbhen ‘ho, acted dAege kbs ol: Gad Ss tere a atin, ne,
125
V-16. Sta. 2724-54. In 1027 feet. OPG took 2.52 cuft of fine
green sticky mud with a few very hard rocks. The screenings -consisted
of about 16 liters of rubble, fine to coarse gravel and shelly fragments.
The contained animals were numerous and diversified.
Some siliceous sponge
Echinoderms: a few ophiuroids
Crustaceans with many amphipods.
phoxocephalid amphipod: Heterophoxus sp. A-7
Echiuroid: deep green kind = 3
Polychaetes include;
Anaitides - several Maldane- many
Ceratocephala c. americana - 1 onuphids - several
Drilonereis - 1 or more polynoid - 1 or more
Glycera - 1 polyodontid
Lumbrineris = several spionids - several
other kinds
SUMMARY.- The sample is characterized by the presence of glass sponge,
a green echiuroid, and Maldane.
V-17. Sta. 2790-54. In 1115 feet. OPG took 2.33 cuft of blue
gray mud. The screenings consisted of many different kinds of animals.
Echinoderms include a brissopsid and a surface urchin.
Crustaceans include some amphipods, cumaceans, an isopod, an ostracod,
and phoxocephalid amphipod, Harpinia sp. A-2
Echiuroid
Anemone
Polychaetes include:
Aglaophamus = 2 Lumbrineris, other sp. - l
Anaitides - 3 Maldane - many
Chone - lL other maldanid = 1
cirratulid - 1 Nothria pallida, in thick mud
Drilonereis - 1 tubes - many
Goniada=- 1 Onuphis - 1 or more
Harmothoe lunulata var. - l Pectinaria californiensis - many
another harmothoid - 1 Prionospio pinnata - several
Laonice - 1 Prionospio, other sp. - 2
Lumbrineris cruzensis - 1 terebellid = 1
and others
SUMMARY.- The bottom is characterized by Nothria pallida and Pectinaria.
V-18. Sta. 2190-52. In 1140 feet. OPG took 3.02 cuft of fine
silty mud. The screenings consisted of many kinds of animals.
Echinoderms = an echinoid, and several holothuroids
Echiuroid, Thalassema- 1
Nemerteans - several
Mollusk with Chaetoderm - several
Polychaetes include:
Aglaophamus - 1 or more Lumbrineris - several
Anaitides = 1 Nephtys - several
Brada = 1 Nothria - 1
?Capitella - 1 Pectinaria californiensis - 12
other capitellids Pherusa - several
Chloeia pinnata = many Prionospio spp. - several
Glycera - 1 large sabellid- 1
Goniada- 1 Scalibregma - 1
Harmothoe lunulata var. - 2, with other annelids
internal parasites
SUMMARY.- The bottom is characterized by Chloeia, eee and
Thalassema.
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ae gueuhas ‘eco Taamacak ©
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a@iemins ‘Yo ebhrky’ tneteehEe yan to Petasenee aRAewotod.
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ebasoas ret ybogous 8 RITA OR MED Hy og bettie: enge sbi tGet
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126
V-19. Sta. 5166-55. In 1176 feet. OPG took 2.52 cuft of fine
green mud. The screenings included many tests of foraminiferans,
especially Goesella, many smaller mollusks, dead fragments of Dentalium,
and various kinds of animals.
Crustaceans include phoxocephalid amphipods:
Paraphoxus sp. A-l
Pontharpinia sp. Q-1l
Echiuroid, Thalassema = 2 larger
Nemerteans include?
red-ribbon nemertean, Cerebratulus - 2 larger
another kind - 2 smaller
Sipunculid = l
Enteropneust - 2 anterior ends
Polychaetes includes;
Anaitides Maldane - 4
Ancistrosyllis - 3 maldanid in sandy tube
Brada Marphysa
capitellid Melinna - 1 or more
Cossura Nephtys - 3 small
Euc lymene Nereis ?procera
Glycinde - 2 larger very long nereid
Goniada Pectinaria - more than 500
Haploscoloplos elongatus - 3 Pherusa
Harmothoe lunulata var Scalibregma
Leocrates - 2 Spiophanes - 3
Lumbrineris ?cruzensis and others
SUMMARY.- The largest animals are Thalassema, the most conspicuous
Pectinaria. The sample is estimated to have 40 species with
more than 200 individuals.
V-20. Sta. 2189-52. In 1768 feet. OPG took 1.87 cuft of silty
mud. The screenings consisted of many diversified animals.
Echinoderms include ophiuroids and an urchin.
Crustaceans include:
ostracods with at least 3 species - more than 50
cumaceans = 5
phoxocephalid amphipod, Heterophoxus sp. A-11
Mollusks, identified by Dr. Mattox, include:
solenogasters Chaetoderma - 15, and Limifossor - 9
scaphopods, Cadulus tolmiei - 33, and Dentalium rectius - 3
gastropods, Balcis rutila - 6, and Bittium attenuatum - 1
pelecypods withé
Axionopsis sericatus - 12
Cardiomya pectinata - il
Crenella columbiana = al
Macoma incongrua = $25
Nuculana conceptionis -42
Nucalana spargana =- 8
Sphenia globula = 5
Tellina carpenteri - 61
Thyasira barbarensis - 1
Nemerteans = several
Polychaetes include:
ampharetid in mud tube - 2 or more
other ampharetid in sandy tube - several
Anaitides - 4
Brada = 5
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127
Capitellid = 1 nephtyids - several
Chloeia pinnata - about 90 onuphid
other cirratulids - several Pectinaria californiensis - 50
Cossura candida - 2 or more
Glycera americana - 1 large Pherusa spp. - several
another Glycera sp. - l Polydora - 1
Givednde =) 1 polynoid - several
Goniada - 1 Prionospio ?cirrifera - 8
Haploscoloplos elongatus - 1 Prionospio pinnata - 8
maldanids = 10 or more sabellids - 2
Marphysa - 1 Scalibregma - 3
Myriochele gracilis - about 8 Streblosoma - fragment
and others
SUMMARY.= The sample is characterized by its numerous mollusks,
Chloeia and Pectinaria.
V=21. Sta. 5400-55. im 1593 feet. OPG took 2.35 cuft of oily
green sticky mud. The screenings consisted of many arenaceous
foraminiferans, a trace of siliceous sponge, and many kinds of other
animals. Present, though perhaps not typical, was a long tapeworm,
presumably dropped from a pelagic fish, 5 otoliths, and a serrated
shark's tooth.
Echinoderms include?
Brissopsis pacifica - 5
Amphioplus strongyloplax - 4
Crustaceans include:
an isopod
phoxocephalid amphipods: Harpinia sp. A-2
Mollusks include?
Chaetoderma - 2 smaller
Amphissa shells
other gastropods and pelecypods
A small sea whip
Echiuroid - 1
Nemertean - a larger ribbonlike species
Tubicolous anemone - 2 2
Polychaetes include;
Aglaophamus Nephtys - small
Ancistrosyllis Nothria - many larger
Aricidea uschakovi Paraonis - 2 or more
flabelligerid, in snail shell Pectinaria californiensis -
Leocrates = 2 5 large
Lumbrineris bicirrata - 1 very large Pilargis
Maldane Prionospio pinnata - 10 larger
Melinna Tharyx - several
SUMMARY.= The sample is estimated to have about 30 species and
100 individuals.
V=22. Sta. 2796-54. In 15435 feet. OPG took 0.95 cuft of blue
gray mud with much coarse to fine rubble, and many kinds of animals.
Siliceous sponge with long spicules
Echinoderm = 1 ophiuroid only
Crustaceans include some amphipods and isopods.
Phoxocephalid amphipods with:
Harpinia sp. Bel
Leptophoxus spe A-2
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128
Mollusks include?
chaetoderm - several
Cadulus = 14 or more
gastropods and pelecypods of several kinds
Burrowing anemone - 3
Echiuroid, Thalassema = 2
Polyclad = 1
Polychaetes include:
Ammotrypane Paraonis
ampharetid - 2 Pectinaria californiensis - 1
Lanice, in large tube Petaloproctus - 2 or more
_.Lumbrineris cruzensis - 3 Pherusa - 2
Maldane = more than 50 polynoids of 2 kinds
Melinna = 2 Prionospio - 2
Myriochele gracilis Ssyllis
Nothria ?Thelepus in tube
Onuphis vexillaria =- 1 or more other kinds
SUMMARY.= The sample is characterized by Maldane and Thalassema.
V=-25. Sta. 5167-55. In 1680 feet. OPG took 1.95 cuft of green
mud. The screenings consisted of many arenaceous and calcareous
foraminiferans, also flocculent bits of algae and debris, and many
different kinds of animals.
Echinoderm - 1 brissopsid only
Crustaceans - 1 phoxocephalid amphipod only, Pontharpinia sp. Q
Mollusks include;
Amphissa bicolor - 38 shells, many living
Chaetoderma = 2
scaphopods, 8 shells, most dead
various pelecypods and gastropods
Nemerteans, red ribbonlike Cerebratulus - 2 large
Sipunculid = 1
Polychaetes include?
Ancistrosyllis =- 3
Aricidea
Brada - 16, some ovigerous
?Dasybranchus = 5
onuphid, with tube, lacks head
Pectinaria californiensis - 1
Prionospio pinnata - 1 larger and 1 small
Scalibregma - 1 giant ovigerous, weighs 900 mg (wet weight)
Spiophanes
SUMMARY.= The largest individuals are Scalibregma and Cerebratulus,
the most conspicuous are Brada and Amphissa. The number of species
is estimated at 30, that of individuals at 75.
V=24. Sta. 2151-52. In 1746 feet. OPG took 0.5 ecuft of mud.
The screenings consisted of many kinds of animals.
Siliceous sponge - some
Echinoderms include 2 echinoids and many ophiuroids
Crustaceans include 2 small spider crabs, a shrimp, a Scalpellum (barnacle)
and a phoxocephalid amphipod, Heterophoxus sp. A.
Mollusks include?
gastropod, ?Nitidella sp. = about 30
boring pelecypod, Xylophaga sp. - many in water-logged wood
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129
Polychasetes include?
Acrocirrus ?crassifilis = about 15
Amphicteis
Anaitides
?Asclerocheilus - about 4
capitellid - 2
chaetopterid - 3 long tubes and fragments of animals
Cirratulus, resembling cirratus
Cirratulis, another kind - 4
?Bumida
. Buphrosine
Evarnella fragilis
Glycera tesselata - 3
?Hauchiella
?Hypoeulalia bilineata
Lagisca
Laonice
Lepidonotus - 2
Lumbrineris, more than 1 kind - 9
Nereis
Qnuphis
Pherusa =- 3
phyllodocid
Polydora, with 3 species - about 10
Protula, tubes fully attached to surfaces
syllid - 3
Terebellides
SUMMARY.= This bottom has a uniquely diversified fauna, characteristic
of moderate to deep parts of Redondo Canyon.
WV=25. Sta. 2150-52. Im 1820 feet. OPG took 1.58 cuft of mud.
The screenings consisted of many reddish brown arenaceous foraminiferans,
especially Valvulinidae, Goesella, and others, and small pieces of wood
riddled by a boring mollusk.
Echinoderm - Brissopsis pacifica - 1
Mollusks include?
Amphissa - 3
Acila- 1
scaphopods =- 2
?Macoma - 1
solenogasters - 6
Xylophaga, boring pelecypod, in wood
Fragments of a sea pen with pendanted stipe
Nemerteans - 5 or 4 larger
Polychaetes include:
Amage, in silt covered tube
Aricidea
Brada, perhaps pilosa - 25 (largest measure 22 mm long)
Capitella - 1 female only es
Chloeia pinnata
Dorvillea articulata
Glycera, perhaps capitata - 1 minute
Heteromastus filobranchus
Leocrates = 2
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bum %o ¢iuro Best Boot 10 res ve eae
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130
Nephtys - 8 ovigerous, length only 7 to 10 mm
Ninoe
Pilargis, fragment
polynoid - 1 minute
Prionospio pinnata - 2
sabellid, in silt covered tube
Scalibregma - 5 smaller, to 10 mm long
Terebellides
SUMMARY.- The largest animals are nemerteans; none is conspicuous.
The fauna resembles that in adjacent samples.
V-26. Sta. 2792-54. In 1850 feet. OPG took 2.77 cuft of blue gray
mud. The screenings retained many foraminiferans and metazoan animals.
Echinoderms - Brissopsis pacifica - 2
Crustacean = a phoxocephalis amphipods: Harpinia sp. B-1
Mollusks include white gastropods and perhaps a few others
Polychaetes of diversified kinds, resembling those in adjacent samples.
V-27. Sta. 3168-55. In 1890 feet. OPG took 2.08 cuft of gray
green mud. The screenings consisted almost entirely of foraminiferans
and shell fragments weighing 56 grams, and a large living gastropod,
Turcicula, which weighed 14.25 grams, In addition, the animals listed
below.
A small sea whip
Mollusks include?
Amphissa - 8 shells
solenogaster- 1
shells of caecids, gastropods and pelecypods, few in numbers
Turcicula bairdii - 1 large living
Polychaetes include:
ampharetids- 14, and about 50 uniformly small tubes
Amphicteis scaphobranchiata - 1 larger
Brada
capitellid
Chloeia pinnata - 3 larger
?Chone, in sand=covered, cartilaginous tube - 3
Cossura candida
Lumbrineris = 1 small
Melinna - 4 larger
unknown orbiniid
Paraonid
Pista, in tubes attached to large shell
Polydora
Prionospio
Terebellides
Tharyx
serpulid, attached to shell
SUMMARY.- This is a deep water fauna, characterized by the large snail,
ampharetids, and some other polychaete genera.
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131
V-28, Sta. 5174-55. In 2008 feet. OPG took 2.64 cuft of dark
green silty mud. The screenings consisted of many foraminiferans and
a few animals.
Echinoderms include Ophiomusium jolliensis-1l, and an Ophiomyxid - 1
dead shells of scaphopods
Sipunculids
Nemerteans - 2
Polychaetes include:
ampharetids - parts of 2 species
unknown orbiniid
deep-water Phyllochaetopterus, with tubes
SUMMARY.- This approaches the Impoverished Fauna characteristic in
the subsill parts of San Pedro Basin.
V-29. Sta. 2562-55. In 2112 feet. OPG took 2.85 cuft of fine
gray green mud. The screenings consisted of foraminiferan tests, an
echiuroid and numerous smaller polychaetes.
V-350. Sta. 2725-54. In 2165 feet. OPG took 5.4 cuft of fine
green sticky mud. Only a small sample failed to pass through the
screens; this contained many foraminiferan tests and some metazoan
animals.
A small ophiuroid
Mollusks include:
solenogasters =- 1 large and several small
?Nitidella - several
another gastropod - several
Echiuroid - 2
Sipunculid - several
Enteropneust - 53, with 2 or more species
Polychaetes include:
Amphicteis scaphobranchiata, in thick muddy tubes
Aricidea - 2
capitellid
several cirratulids
maldanids of 2 kinds
?Leocrates
Lumbrineris
unknown orbiniid - several
Paraonis - 3
unknown sabellid - 2
sigalionids - 4 or more
SUMMARY.=- This bottom is characterized by the presence of an enterop-
neust and ampharetid annelids.
V-51. Sta. 3169-55. In 2280 feet. OPG took 1.95 cuft of green
mud. The screenings consisted of foraminiferan tests and metazoan
animals.
Echinoderm - Ophiomusium jolliensis - 1 larger
A small sea whip
A tiny nemertean
Mollusks with dead shells of Cyclopecten and a white gastropod
Polychetes include:
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Re aoged MARS SP ARRAS) to Devalarton tgiataeetes Gilt my Sekt
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ert ipod BONE wt) Relist ‘etqmae’ Laine CO... Saat
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d ‘Lee Bae an ee btomertel
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132
ampharetid, in muddy tubes = about 20
unknown capitellid
cirratulid
?Melinnexis, in tube - 1, measured 50 cm long and weighs 30 grams
unknown orbiniid
protulid tubes, attached to that of ?Melinnexis
sabellid, in tubes - 2
SUMMARY.- This sample is characteriiged by the large ophiuroid, and
the ampharetid polychaetes.
V-32. Sta. 2474-55. In 2430 feet. OPG took 3.9 cuft of fine dark
green mud. The screenings, a little less than a pint, included many
calcareous and some arenaceous foraminiferan tests, large tubes of
chaetopterids, and numerous smaller animals.
Echinoderm - a small urchin only, perhaps Allocentrotus fragilis
Mollusks include a tiny, clay-covered bivalve, and 3 small solenogasters
Sipunculids - 2 long, linear
Polychaetes include?
?Amage - 59, with tubes
Ancistrosyllis
unknown capitellid
Drilonereis
Lumbrineris
small maldanid fragment
unknown orbiniid
Paraonis - 2 long, slender
Potamethus elongatus - 1, in cylindrical tube 95 mm long
protulid, with tube fragments
Spiophanes, with tube
V-35. Sta. 3171-55. In 2550 feet. OPG took 2.45 cuft of green
mud. The screenings measured less than a pint, consisted of many
foraminiferan tests, some black, glassy stones, a small piece of wood,
2 fish otoliths, tubes of animals, and a few broken valves of Cyclopecten.
Polychaetes include:
a large Pista, in thick mud tube
deep-water Phyllochaetopterus - with tubes and a few specimens
small bits of Protis pacifica
avery slender, perhaps juvenile cirratulid
V-354. Sta. 5175-55. In 2590 feet. OPG took 5.15 cuft of green
mud. The screenings consisted of only foraminiferans and a few smaller
animals.
Echinoderm - a larger ophiuroid, Ophiomyxidae
A galatheid crab
A sipunculid
Polychaetes include:
ampharetids
deep-water Phyllochaetopterus
Spiophanes
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133
V-35. Sta. 2728-54, In 2670 feet. An unscreened and unfixed
sample was examined after it was brought into the laboratory. Only
Phyllochaetopterus could be identified. It is possible that lack of
preservation on shipboard caused destruction of other animal contents.
V-54. Sta. 3170-55. In 2760 feet. OPG took 2.58 cuft of green
mud. The screenings consisted of foraminiferan tests, a few dead
valves of Cyclopecten and a few polychaetes.
Amage ?anops - 8 large, in thick mud tubes
Phyllochaetopterus, deep water species - many tubes and 1 individual
Protis tubes - none living.
V-37. Sta. 5173-55. In 2850 feet. OFPG took 3.08 cuft of green
sticky mud. The screenings consisted of only foraminiferan tests,
dead valves of Cyclopecten, and polychaetes:
Amage ?anops - 2, in thick mud tubes
Protis tubes
unknown orbiniid
SUMMARY of V-1 to 37. Redondo Canyon supports a unique fauna,
characterized by many species which are sparse or absent in other
parts of Santa Monica Bay. Most of its bottoms are soft or muddy.
In its moderate depths it supports a Thalassema association, which is
replaced in its. deeper parts by an ampharetid, and finally by a
Phyllochaetopterus association.
VI-l. Sta. 2791-54. In 2567 feet. OPG took 3.08 cuft of fine
blue gray mud. All materials passed through the screens but about
a pint of foraminiferan tests and empty tubes of Phyllochaetopterus
(deep-water species). ar a ie es ee
VI-2. Sta. 2620-54. In 2562 feet. OPG took 2.2 cuft of fine
gray green mud. The screenings consisted of less than a pint of
foraminiferan tests and empty tubes of Phyllochaetopterus (deep-
water species).
VI=e3. Sta. 3019-55. In 2570 feet. The Campbell grab took 5.351
cuft of black rock fragments, some of which had dead tubes of fully
attached serpulid; there were many siliceous sponge spicules and
foraminiferan tests, in addition to animals listed.
Echinoderm with a tiny, juvenile seastar only
Crustaceans with 1 amphipod and 5 calanoid copepods
Mollusks include:
solenogasters = 5
Cadulus =- 3
‘a small white Macoma=-like clam - 3
Mittred Va =) 1) irae
fragments of Delectopecten shells
‘Bexttaw’ ‘bone ‘bangetoamye 1
‘ghad “.¢totetodad ight ages
ter soat- bard efdiapod #8 x". aed
ek sz R80: hen ae ‘totid yi Hopamirss
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i
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eat fp ote 80.8
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134
Polychaetes include:
Ancistrosyllis - 2
Aricidea
Lumbrineris fragment
Paraonis
SUMMARY.- This sample came from the sill between San Pedro and Santa
Monica basins. Its diversified fauna may be the result of greater
water exchange than in other parts of this zone.
VI-4. Sta. 2794-54. In 2672 feet. OPG took 3.4 cuft of blue gray
mud. The screenings consisted of foraminiferan tests, some siliceous
Sponge and fragments of tubes (Phyllochaetopterus and protulid).
VI-5. Sta. 2729-54. In 2721 feet. OPG took 5.4 cuft of fine
green sticky mud. The screenings consisted of about a pint of
foraminiferan shells, some siliceous sponge spicules and a few metazoan
animals.
A calanoid copepod
A small gastropod, perhaps Mitrella
A small sipunculid
Polychaetes include?
Amage, nr. anops - 1 larger and 6 smaller, in thick mud tubes
Glycera branchiopoda
Phyllochaetopterus, deep-water species - at least 9 and many tubes
piophanes
VI-6. Sta. 3020-55. In 2670 feet. The Campbell grab took 4.45
cuft of green mud. The screenings consisted of many foraminiferan
tests, empty tubes of Phyllochaetopterus, protulid tubes, broken valves
of Cyclopecten, and a single large ampharetid, Amage, nr. anops, in
a thick mud tube.
VI-7. Sta. 2965-54. In 2820 feet. The Campbell grab took 3.3
cuft of fine mud. The sediments had no living metazoan animals.
VI-8. Sta. 2970-54. In 2856 feet. The Campbell grab took 35.59
cuft of gray green mud. There were no living metazoan animals.
VI-9. Sta. 2971-54. In 2910 feet. The Campbell grab took only
plankton with ctenophores; it failed to take a bottom sample.
VIelO. Sta. 3411-55. In 2922 feet. OPG came up with a full
(mot measured) sample of fine mud. The screenings consisted of many
dead (though not black) sticks of wood, foraminiferan and radiolarian
. agnae 2 Cale eooelippe he
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ore 4
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135
tests, broken shells of Cyclopecten and empty tubes of Phyllochaetopterus
and Protis. There were no living metazoan animals.
V-1ll. Sta. 3410-55. In 2928 feet. OPG was filled with fine
dark mud and smaller nodules of reddish brown waxy masses which floated
in water. The screenings consisted of dead and blackened tubes of
Phyllochaetopterus, Protis, and broken, dead shells of Cyclopecten.
There were no living metazoan animals.
VEel2. Sta. 3412-55. In 2928 feet. OPG was filled with fine mud.
There were no living metazoan animals.
VF13. Sta. 2963-54. In 2993 feet. The Campbell grab took 5.74
cuft of fine mud. The screenings consisted of many small dead sticks
of wood, dead tubes of Phyllochaetopterus, serpulid, and Cyclopecten
shells. There were no living metazoan animals.
VE14. Sta. 2964-54. In 2993 feet. The Campbell grab took 5.74
cuft of fine mud. There were no living metazoan animals.
SUMMARY OF VI-l to 14.- The stations in Zone VI represent a large,
subsill area in soft, muddy bottoms of Santa Monica Bay. There are
only two or three species (Phyllochaetopterus, Protis, and Cyclopecten),
in sparse numbers, in scattered areas. Two samples (VI-5 and V1-4)
near the lower end of Redondo Canyon, have metazoan animals of more
diversified kinds. Faunistically considered, the subsill area of
Santa Monica Bay is a continuation of the impoverished or dead area
present in San Pedro Basin.
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ie
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te -plasine Hanke ett avas Di
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Sate haes mee ey bedal'tevon mad: ony, hi
136
Chart showing decrease in numbers of species
with increasing depth
ae
if
U37,
CHART SHOWING DECREASE IN NUMBERS OF SPECIES WITH INCREASING
DEPTH [in zones II and V (which are continuous) and VI]
Zone and Number of Volume of Depth in Nos. of species
location Species sample in fathoms estimated per
OpEeds cuft of sample
II-2 60 0.06 AZ 5 fs) 1000
II-3 90 0.10 USS) 900
II-4 50 0.25 14 200
II-7 65 0.63 on 104
V-1 45 sales 58 39
V-3 60 Laat 61 40
V-5 70 eS} 65 38
V-4 70 LAWS 66 38
V-7 70 2.83 80 25
V-8 45 0.44 100 100
V-10 50 3.08 A140) 61
v-19 40 2.52 196 16
V-21 30 2.55 220 16
V-23 30 1.95 280 15
V-25 26 0.50 310 52
V-27 26 2.77 315 )
V-28 tS) 2.64 325 3.4
V-31 12 1.95 380 6
V-32 5: 3.90 405 509
VI-7 to 14 3-0 Bos 26 470 to 5-0
5.74 490
aBoHC our
Bios “EY
'
eit
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eer |
ane ta. i“
oor 1008 lee kh re
| We 2) he ee eh ay | 88. i
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O88 ie a 98 take
ons a6 08
138
Chart showing
Bio-index Values in Zones I to VI
Tm
ay iia.
‘ SH
139
The bio-index (the ratio of the number of metazoan
species to the number of individuals) is estimated
from detailed analyses of some stations in zones I to VI.
Zone Volume in Depth Bio-Index Percentage
-and No. cuft. in ft. Value
I NW-2 1.51 80 40/150 26.0
I NW-3 0.75 75 60/200 30.0
I NW-4 1.19 57 70/600 ~9.9
I NW-5 SB 100 30/150 20:0
I NW-7 2.68 114 50/400 12.5
I NW-8 2.00 146 75/500 (0)
I NW-9 0.63 122 42/150 28.0
II-1 1.32 54 M1/150 aul
II-3 0:10 75 90/500 18.0
II-4 0.25 92 50/350 14.0
II-6 2.83 132 33/275 1250
II-7 0.63 185 65/1000 625
V-1 iL ale 345 45/200 24.0
V-3 igiepl 366 60/950 6.5
V-4 1.76 398 50/600 6.3
V-5 1.78 401 70/950 7.5
V-7 2.85 480 70/1000 70
V-8 0.44 603 45/300 15.0
V-10 3.08 657 50/350 14.0
V-19 Boee 1176 40/200 20.0
v-21 2655 1393 30/100 35.0
V=-23 1.95 1680 30/75 40.0
V-25 0.50 1810 26/150 18.0
V-27 2ETY 1850 26/75 B86
V-28 2.64 2008 9/20 45.0
V-31 1.95 2280 12/31 40.0
V-32 3.90 2430 15/57 22.5
(ite 3.08 2567 1/trace 957
VI-3 3.40 2672 1 /several 95/°
VI-4 5.31 2670 12/24 50.0
VI-5 3.40 2721 en “3365
VI-6 4.45 2670 4/4 1004
VI-7 Soe) 2820 0/0 1004
VI-8 to 14 3.59 to 2856 to 0/0 1004
5674 2995
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140
List of some species in Santa Monica Bay
and more distant areas
with locations by zones
ovat goteoM adios’ ak ‘Re toege watts
| eaera dnatarh exon ‘Boia
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“a0 Hols «a seditueol “ere”
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141
LIST OF ECHINODERMS, WITH OCCURRENCE IN SANTA MONICA BAY
AND MORE DISTANT AREAS
(All determinations and individual counts were made by Fred Ziesenhenne)
OPHIUROIDEA (brittle stars)
Amphiacantha amphacantha McClendon. I W-12 (1); I W-13 (2); I W-16 (6);
I W-19 (1)g ET W=190e (7)s I Weel (3); 1it-9 WB) 8 eae Ie aay (45) 0 ©
III=11 (1); IV-1 (4); Iv-2 (6) V-1 (8)s V-4 (25)3 V-5 (24);
V=-9 (1)3 San Pedro and outer areas.
Amphichondrius granulosus Nielsen. V-1 (1).
Amphiodia (Amphispina) digitata (Nielsen). I W-4 (2); I W-10 (531);
I W=12 (24) 3 I W-13 (37)3 I W-19e (59)3 I W=-21 (8); I W-22 (1);
IT NW=-3 (11): I NW-7 (7)3 I SW=5 (2)3-I SW-6 (8)3 II=-2 (1)3
III-11 (47)3 IV=-1 (25)3 V-1 (39)3 V-4 (107); San Pedro and outer
areas.
Amphiodia (Amphispina) urtica (Lyman). I W-2 (6); I W-6 (10);
I W-7 (123); I W-9 (441): I W-1l (654): I W-12 (110)3 I W-16 (46);
I W-19 (7); I W-20 (3)3 I W-21 (23); I NW-8 (118); I SW-8 (141);
IT SW-9 (328): I SW-10 (44)3 III-8 (191); III-9 (4); III-10 (3);
EV-1 (1): IV-2 (16): IV-8 (3)3 V=1 (5)3 V=4 (85)3 V=5 (85)3
V-9 (48)3 San Pedro and outer areas.
Amphiodia occidentalis Lyman. I W-6 (3); I W-17 (1); off Santa Barbara
Island.
Amphiodia psara H.L.Clark. I W-13 (1) IV-1 (5 large)e
Amphiodia "rugosa" A.H.Clark (MS name). I W-5 (4)3 IV=-1 (12).
Amphioplus hexacanthus H.L.Clark. I W-=6 GS) isae W-12 (4)5 I W-14 (1)s
I W-16 (3)s 1 NW-8 (4)3 I SW-6 (1); I SW=8°(1)3; II-2 (23
Il=3 (2)3 Dl=4 (1)3 ILI-2 (2)3 Vel (3)3 V=4 (5)3 San Pedro
and outer areaso
Amphioplus strongyloplax (H.L.Clark). I We7 (4)3 I W-19c (2)3 als W-21 (1);
T SW-9 (1); i2i-u0 (2)3 IID=-11 (2); Ili-12 (ZO serena} (3) GB
IV=1 (4)3 IVe2 (4)3 Vel (3)3 Ve4 (5)3 V=5 (7)3 V=9 (3)3 V-19 (4) 5
San Pedro areas.
Amphipholis pugetana Lyman. IW-17 (9); I W-21 (7)3 IV-1 (1); San Pedro
and outer areas.
. ne mae Me . oT We 1);
Amphipholis squamata (Delle Chiaje). I W-4 (1)3 1 W=-6'(5)3; I W 7 (61);
T W-9 (64)3 1 W-10 CUS7)ie Wane (505) 3 W-12 (63)3 I W-14 (1);
I W-16 (7)3 I W-17 (44)3 I W-19¢ (2)3 I NW-3 (Oi NW-8 (60);
I SW=-5 (20); I SW-6 (47); I SW-7 (15 juv.); I SW-8 (176) 3
I SW-9 (126); I SW-10 (3); II-2 (1); II-3 (2); ITI-8 (1);
ae ON Sie) = ON (G5) 3 Hetemal (YAS) e Vaeiiiteoes (aL )y Sy acanaecal’s) GOES
TV-1 (5); IV=2 (1); IV-5 (20) V-5 (6); V-9 (13); V-1O ( 2 juv.);
off Santa Cruz Island.
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142
Amphipholis sp. V-5 (1 juv.).
Amphiura arcystata H.L.Clark. I W-10 (2); I W-12 (1); I W-16 (2);
I NW=8 (1); San Pedro areas.
Amphiura seminuda Llitken and Mortensen. I W-21(2); III-9 (1); off
Santa Barbara Island.
Amphiuridae sp.? I W=17 (1 juv.).
Astrophiura marionae Ziesenhenne. San Pedro areas.
Ophiacantha diplasia H.L.Clark. I W-17 (3); San Pedro and outer areas.
Ophiacantha phragma Ziesenhenne. San Pedro and outer areas.
Ophiacantha quadrispina H.L.Clark. I W-17 (1).
Ophiacantha sp.? III-14 (6); Santa Cruz Basin.
Ophiactis simplex (Le Conte). Shore at Newport.
Ophiocnida californica Ziesenhenne. I W-13 (1).
Ophiocnida sp. V=5 (1-).
Ophiocynodus corynetes H.L.Clark. III=-16 (1); San Pedro and outer areas.
Ophiomyxid. V=-29 (1); V=34 (1).
Ophiomusium joliiensis McClendon. V-29 (1); San Pedro area.
Ophionereis eurybrachiplax H.L.Clark. I W-17 (9 large); San Pedro and
outer areas.
Ophiopholis bakeri McClendon. I W-13 (1); I W-17 (3); I W-22 (1);
San Pedro and outer areas.
Ophiopholis longispina H.L.Clark. Catalina area.
Ophiopsila californica A.H.Clark. I W-12 (1); I W-13 (1); I W-14 (1).
Ophiopteris papillosa (Lyman). San Pedro areas.
Ophiothrix spiculata Le Conte. I W=-10 (fragment); I W=12 (1); I SW-7
fragment); V-10 (1); I W-13b (24 )s I W-17bd (1)3 I W-19a (1);
San Pedro and outer areas.
Ophiura leptoctenia H.L.CGlark. Catalina Basin.
Ophiura litkeni Lyman. I W=-10 (1)3 I W-12 (1)3 I W-l3a (1)3 I W-13b (24)3
I W-14a (£2); I W-17a (2): I W-16 (4); I W-17 (1)3 I W-19 (2);
I W-21 (2); I NW-8 (1); I SW-6 (2)3 I SW-10 (5); II-2 (6)3
II=-3 (5)3 II-4 (11)3 IV=-1 (2)3 V-5 (1 juv.); San Pedro and outer
areaso
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143
Ophiuroconis bispinosa Ziesenhenne., II-2 (5); II-3 (5).
ASTEROIDEA (Sea Stars)
Asterina miniata (Brandt). San Pedro areas.
Astropecten armatus Gray. I NW-5 (5).
Astropecten californicus Bishan. I W-2 (1 medium large); I W-3 (2 moder-
ately large); I W-4 (1)3 I W-6 (1); I w-9°(1 juv.)3 © W=1r (1);
I W-12 (1 juv.)3 I W-13b (1 large); I W=14a (1 'juv.); near I W-18
(1 large); I W-21 (1); I NW-7 (1 large); I NW-9 (1 large);
I SW-4 (1 large); I SW-5 (3); I SW-6 (2 juv. )3 San Pedro areas.
Luidia asthenosoma Fisher. II-3 (1); III-2 (5); III-16 (1 juv.);
San Pedro area.
Luidia foliolata Grube. San Pedro and Catalina areas.
Luidia ludwigi Fisher. San Pedro area.
Henricia sp. San Pedro areas.
Mediaster aequalis (Stimpson). San Pedro areas.
Odontaster crassus Fisher. I W-17 (1 juv.).
Pisaster giganteus (Stimpson). I NW-4 (1 large).
Pisaster capitatus Stimpson. San Pedro area.
Sclerasterias heteropaes Fisher. IW-17 (5); San Pedro areas.
ECHINOIDEA (Surface or Epifaunal Sea Urchins)
Allocentrotus fragilis (Jackson). Deep water in San Pedro and outer areas.
Dendraster excentricus (Eschscholtz). Off Santa Barbara Island.
Dendraster laevis H.L.Clark., San Pedro area.
Lytechinus anamesus H.L.Clark, I W-16 (1); I W-19 (1)3 I W-21 (1)3
I W-e2 (3)3 Iil-4 (2)3 San Pedro and outer areas.
Strongylocentrotus franciscanus (A. Agassiz). Intertidal rocky areas.
Strongylocentrotus purpuratus Stimpson. Intertidal rocky areas.
ECHINOIDEA (Burrowing or Infaunal Sea Urchins)
Brisaster townsendi (A. Agassiz). I W-19e (2); III-12 (1); III-13 (2)3
T1i-14 (2); IV-2 (2): IV-5 (2)3 San Pedro and outer areas.
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144
TII-14 (1)3 IV-5 (2)3 IV-8 (2 large);
Brissopsis pacifica iz). 3
V-19 (5)3; V=26 (2); San Pedro and outer
(A.
V-5 (1 large); V-9
APeAS »
Lovenia cordiformis A. Agassiz. II-3 (1).
Spatangus californicus H.L.Clark. I W-19 (1); V-9 (1).
HOLOTHUROIDEA (Sea Cucumbers)
(most are not specifically identified)
Leptosynapta ?inhaerens (Miller). I W-16 (1); I W-20 (1).
Stichopus californicus (Stimpson). I W-20 (1 very large).
brown papillated holothurian. I W-22 (1 juv.).
Other kinds. I W-13b; I W-14; I W-17a; I W-17b.
CRINOIDEA (Sea Lilies)
Florometra perplexa A.H.Clark. San Pedro area.
LIST OF AMPHIPODS, WITH OCCURRENCE IN SANTA MONICA BAY
AND MORE DISTANT AREAS
(All determinations and individual counts were made by Dr. J. Laurens Barnard)
AMPHIPODA
Ampeliscidae- Ampelisca sp. I W-7 (1 or more); I SW-5 (several).
Ampelisca cristata TI-2 (1).
Aorid. IIl-=2 (2. )) 6
Caprellids. II-2 (30).
Corophiidae. Corophium sp. II-2 (1).
Erichthonius brasiliensis. HIS (B))o
Dexaminid. I SW=-8 (19 ovigerous)
Lysianissidae=- Aruga sp. I W-7 (2).
Lepidepecreum spe I W-7 (1).
Fovopricnsila Sewn Lawes
Oedocerotid. I W-13 I W-23; I W-3; I W-4; I W-5; I W-7 (9)3 I W-8;
I SW-33 I SW=-4; I SW-5; I NW-4; II-2.
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145
Photid. Il-2 (25).
PHOXOCEPHALIDAE
Harpinia sp. A. Lil=9) (7))is iit=llO (3S); Lil-12) (2); Drr—1 (3);
TIT=14 (3); IV-1 (7); IV-2 (6); V-17 (2); V-20 (2); San Pedro areas.
Harpinia spo Bo V=-22 (1); V=-31 (1); San Pedro areas.
Harpinia sp. C. San Pedro areas.
Harpinia sp. D. San Pedro areas.
Harpinia sp. F. San Pedro areas.
Harpinia sp. G. San Pedro areas.
Heterophoxus sp. A. I W-7 (4)3 I W-9 (5)3 I W-10 (9)3 I W-11 (7);
TewW=23) (1)3 ET W-17 (3)3 I W-20°' (2) I W-21 (4); I NW=8 (2)3
I SW-8 (2)3 I SW-10 (1)3 III-8 (4)3 III-10 (2)5 IITI- an (90)
Tebow (2) ish eabielS 15) ige-litimt a, (2) ohVieda((4)) ss Vine C4) )er
Veo er Vesn(7)s V9 (5)¢ Velo (2)p Vets Cl); velar
V=-16 (7)3 V-20 (11)3 V-24 (1)3 San Pedro areas.
Leptophoxus sp. A. V=-22 (2)3 San Pedro areas.
Metaphoxus sp. A. I W-7 (4)3 I W-9 (19) 3" IT W-10 (20)3 fF Well (GIS) §
=12 (23)3 I Weel (6): I SW-8 (20): I NW-8 (4)3 II-2 (1)3 ©
ish on (oe nie (Oe Tver (9): Dies (Sis Vesey momen rs
V-9 (7); San Pedro areas.
Paraphoxus sp. A. I W-18 (1)3 V=-13 (1); V-19 (aL) 6
Euexocopbalus | Spice We elaW=ecO (2s) TEL-1O) (23s ited (aly) aia ((5))) 8
3 V-4 (4)3 V-5 (1); V=9 (2)3 V-10 (2)$3 V-13 (1);
ae Pedro areas.
Pontharpinia sp. B. I W=-12 (4); II-1l (S52) ic) p= 22S) is lemon (elie) is
TII=1l (2)3 V-7 (1)3 San Pedro areas.
Pontharpinia sp. E. I W-5 (1); I W+9 (21); I W-10 (29) 5 I W-11 (44);
Voom Loi TSW LOM (oe) eriimoe (5) 3 Pll) ((dlO)5 tik e(22)))s
IV-1 (1)3 IV -2 (1)3 V-4 (21)3 V-9 (8); San Pedro areas.
Pontharpinia sp. F. San Pedro area.
Pontharpinia sp. G. I W-6 (1)3 I SW-6 (1); I SW-8 (1)3 I NW-4 (1)3
T NW=8 (1): Il=3 (3); III-3 (14); San Pedro areas.
Pontharpinia sp. J. I W-7 (4); I W-9 (18); I W-1l (26); I W-12 (23);
M—i~Weilome)s L W-19°(2)° © W-20 (14); © W-21 (8); I SW-8" (3);
T SW-10 (2)3 I NW-4 (1)3 I NW-8 (6); III-11 (17); v-4 (4)s3
V-5 (1)3 V-9 (2)3 V=-10 (1)3; San Pedro area.
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Pontharpinia sp. K. II=-2 (1); II-3 (5)3; San Pedro area.
Pontharpinia sp. L. San Pedro area.
Pontharpinia sp. M. II-1 (2); San Pedro areas.
Pontharpinia sp. Ne. San Pedro area.
Pontharpinia sp. P. San Pedro area.
Ronbharpinia Sp. @. il—-2 (8); Tl-3 (9); TLE-3 (5); v-19 (1); V-2s (QE
San Pedro area.
Pontharpinia sp. R. San Pedro areas.
Pontharpinia sp. S. San Pedro areas.
Pontharpinia sp. T. San Pedro areas.
Pontharpinia sp. U. San Pedro areas.
Pontharpinia sp. V. San Pedro areas.
Pontharpinia sp. Y. I W-10 (1); I W-13 (1); I W-20 (1); I W-21 (1);
ini ale (GD) ie
Pleustid. iie2 (4 ) .
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147
LIST OF POLYCHAETA, WITH OCCURRENCE IN SANTA MONICA BAY
AND MORE DISTANT AREAS
(Individual counts are only partly given. San Pedro area numbers are
published in Hartman, 1955. Outer areas referto locations in Catalina,
santa Cruz, or other basin systems of southern California. )
Acrocirrus ?crassifilis Moore. V=25 (about 15).
Aglaophamus dicirris Hartman. I W-16; III-7.
Aglaophamus spp. I W-53; I W-8; III-9; V-1; V=-43; V-8; V=10; V-17;
V=183; V=-213; V=-303; San Pedro and outer areas.
Amaea occidentalis Hartman. I W=-73 I SW=-73 II=-7; III-3 (5)3 III-11;
San Pedro areas.
Amage ?anops var. Johnson. III-10 (2); V-25 (1); VI-5 (7); VI-6 (1);
San Pedro areas in deeper water and outside areas.
Ammotrypane sp. I We7; I W-10b (1)3 I W-12 (3)3 II-7 (1); III-4 (1);
aimee ISAS) Viasrn(ly ei aia) (Cl)is IVieeS (AN)is
Ampharete ?arctica Malmgren. I SW-13 I NW-3; II-3; San Pedro area
near 42 (2004), and other places.
Ampharete sp. I W-73; San Pedro area.
ampharetids, I W-123 I W=-173 I W-19c3 I SW=3 (3)3 I SW-4; I SW-8;
I NW=4 (9)3 Il-23; IIl-7; III-43; IlI-63 III=-11; III-16 (many);
IV-2 (5)3 IV-3 (many); IV-73; IV=93 V=5 (some); V=1l1 (2 or more);
V-233; San Pedro and outer areas, in moderate to deep soft bottoms.
Amphicteis scaphobranchiata Moore. I W=-5; I NW-4; III-2; V-16; San
Pedro and outer areas.
Amphicteis spp. III-3 (1); V-18( )3; San Pedro area.
amphinomid. San Pedro area.
Amphisamytha bioculata (Moore). San Pedro area at 164.
Anaitides spp. I W=-8; I W-163 I W-173; I SW=3 (15)3; I SW-53; I SW-6;
I NW-4 (14)3 I NW=83 II-23 II=3 (3)3 III=-3 (7); III-9; III-10;
TII-113 IV+23 V=-23 V=43 V=103 V-11; V=14; V-17 (3)3 V-193;
V=183 V=3503 San Pedro and outer areas.
Ancistrosyllis bassi Hartman. San Pedro in shallow areas.
Ancistrosyllis rigida Fauvel. I W-2 (1); I W-12a (1); San Pedro area.
1
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148
Ancistrosyllis spp. I W=-2; I W-5; I We7; I W-12a (1); I SW-3 (1);
I SW-6 (2); I SW-8 (8); I SW-9; I NW-3; I NW-4; I NW-5; I NW-7
(Game); mb=6(26)); Ti=9) (1) 4 bmea) (2); TLi-7 (2) tenenion ie
TIT=153 LiT=16 (1)3;"IV=73 IV=<8 (1)3 V=-4; V=-103; V=-15 (1)3 V=-19 (3);
V-213; V-23 (3); VI-4 (2); San Pedro and outer areas.
Anotomastus gordiodes (Moore). San Pedro areas.
armifera Moore. II-3 (1)3 between I W-14 and I W-15 (1);
San Pedro area.
Aphrodita parva Moore. San Pedro area.
Aphrodita spp. I W-13a (1); between I W-11 and I W-15 (1); II-2 (1);
IIIT-3 (1); San Pedro and outer areas.
Arabella sp. I SW-3 (6); I NW-4 (2); III-1 (1); San Pedro area.
arabellid, parasitic. I W-l4a; I SW-1; San Pedro area.
arabellid, unknown. III-2; San Pedro areas.
Arctonoe ?vittata (Grube). near I W-18 (commensal with Astropecten)
Aricidea ramosa (Annenkova). Catalina Basin.
Aricidea nr.suecica Wesenberg-Lund. I SW-3 (404); I NW-3; II-1 (many) ;
III-1 (7): San Pedro and outer areas.
Aricidea uschakovi Annenkova. I NW-3; IV-8 (2); V-21 (1); San Pedro
and outer areas.
Aricidea spp. I W=2 (several); I W=6; I W-7; I W-8 (2); I W-
I W-17; I W-193; I W-19c3; I SW-1 (504); if SWa2ie0 SW-3 (4
mh SW—4 (5)'s 2 SW-6 (many); I SW-8 (several); I NW-1 (man
I NW-4 (7)3 I NW-7 (several); I NW-8; II-1 (23)3 Teer (CAL
II=-8 (many); III=-3 (Hj) 8 Wako (3) nee WR ACIS ALICE ILO)
TIT-11 (104); III=-16; V-25; V-233; VI-4; common in San Pe
outer areas.
;
a
)3
o and
Armandia spp. I W-1; I W-17 (4); I SW-2; II-2 (2); II-3 (2)3 II-7 (1);
V-2: San Pedro and outer areas.
Artacamella hancocki Hartman. I W-12a (1); I W-12b (1); I W-17a;
Iile43; San Pedro area.
Ascleirocheilus sp. V=-24 (4).
Asychis spp. I W=e8 (1); I NW-5 (1); I NW-8 (1); IIT=6 (1); San Pedro
ASsyenis
and outer areas.
Autolytus spp. nr. I W-14 (1); San Pedro and outer areas.
Axiothella sp. San Pedro area.
Boccardia spp. San Pedro and outer areas.
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149
Brada ?pilosa Moore. V-25 (25). dai
Brada spp. I W-4; I W-73; I W-12d; I SW-6; I SW-8 (5); I NW-3 (6);
TI-6 (6); II-7 (4)3 III-11; III=-15; IV-3; V-1; V-4; V-10; V-11 (5);
V-183; V-19; V-23 (16); San Pedro and outer areas.
Capitella capitata. I SW-3 (604); II-6 (56); San Pedro area nr 42.
he a ee ;
Capitella ovincola Hartman. San Pedro area in Loligo egg cases.
Capitella spp. V-2; V-4; V-18; V-25; San Pedro area.
unknown capitellids. I W-2; I W-7; I W-12; I W-17 (5); I W-19;
I W-19c; I W-19b; I SW-2; I SW-3 (8); I SW=6 (many); I SW-8 (11);
I SW-9; I NW-23 I NW-4 (13); I NW-5; II-2; II-3; II-6; II-7;
ie-Smi(many is) lil=o (LO) LID-9; ILLT=103 Tins) Pit V6s ives
V-23 V-53; V-7 (many); V-11; V-15 (many); V-16; V-18; V-19; San
Pedro and outer areas.
Carazzia sp. San Pedro areae
Caulleriella sp. I W-43; III-1 (10¢); IV-2; San Pedro area.
Ceratocephala crosslandi americana Hartman. I W-8 (2); I W-12c;
I W-16; I SW-8; I NW-83; II-7; III-4; IIlI-7; IV-2; V-4; V-14;
San Pedro and outer areas.
Ceratonereis spe San Pedro and outer areas.
Chaetopterus variopedatus Renier. very abundant at Whites Point in
parts of San Pedro area; sparse in Santa Monica area.
Chaetozone corona Berkeley and Berkeley. I W-12; I SW-35; I NW-4;
San Pedro and outer areas.
Chaetozone spp. I W-33; I W-4; I W-7; I W-14a; I SW-4 (many); I SW-5;
IT SW-6; I SW-8; I NW-3; I NW-5; ?II-3 (6); San Pedro and outer
areas.
Chloeia pinnata Moore. I W-7; I W-8 (9); I W-103; I W-10b (many juv.);
I W-12 (18 juv.); I W-12c (many juv.); I W-14; I W-17a (many
juve); I W-17b (few); I W-19 (juv.); I W-19c¢ (3 adult and 30 juv.);
I W-20 (many juv.); I SW-5; I SW-6 (38 juv.); I SW-8 (444);
I SW-9;°1 NW-8 (7 juv.); DI-6 (1); II-7 (1504); I1I-3 (3);
TII-4 (40f juv.)3; IlI=-5 (many juv.); III-6 (1 adult and 21 juv.);
Try (Sa Joys) s mrss (a) 8 ae (El eile) S mmol (87) 5
IV-2 (10); IV-33 IV-5; V-4; V-5; V-6 (604 adult); V-9 (several);
V-11 (904); V-15 (504); V=18 (many); V-25 (1); v-27 (several);
San Pedro and outer areas.
Chone ecaudata Moore. San Pedro area at 69 (200f).
Chone ?mollis (Bush). I W-12 (7 I W-12c ( 1 very large); I W-13
)3
(l large); II-3 (1); III-6 (3); Iv-8 (1 large); ?V-2; San Pedro
and outer areas.
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150
I NW-3; I NW-4 (7); II-1 (4);
Chone sppe I W-17 (1); I SW-8 (1);
(1); V-30; San Pedro and outer areas.
Dl=5 (1); ILr-16 (aD) = e7;
Cirratulus ?cirratus (Mtller). V-18 (1); San Pedro areas.
Cirratulus spe I W-17 (2); San Pedro areas.
cirratulids. I W-2 (many); I W-8 (many); I W-22; I SW-1 (hundreds);
I SW-3 (many); I SW-6 (many); I SW-8; I SW-9; I NW-3; I NW-9;
II-8; III-2; III-4; III-6 (about 10); III-8 (many); III-10;
III-11 (many); III-16; IV-9; V-5 (many); V-6; V-11; V-16;
V-350; San Pedro and outer areas.
Cirriformia spp. San Pedro areas; scrapings from hull of Velero IV.
Cistenides sp. I NW-4.
Cossura candida Hartman. I W-4; I W-5; I W-7; I W-8 (some ovigerous);
I W-14; I W-19c; I SW-6; I SW-8 (about 20); I SW-9; I NW-3;
I NW-7; I NW-9; II-6 (4); II-7 (4); II-8 (several); III-3 (3);
III-4 (3); III-7; III-8; III-11; V-6; V-11; V-19; San Pedro
and outer areas.
Dasybranchus sp. V-23(5); San Pedro areas.
Dexiospira sp. rocky areas of Santa Monica and San Pedro shallow areas.
Diopatra ornata Moore. I W-2 (1 large); I SW-1 (12 large); I SW-3
(3 large and 6 small); I NW-2 (many large); I NW-4 (28/4 large);
II-2 (1 juvenile); San Pedro areas.
Diopatra tridentata Hartman. IW-7; I NW-7 (1 larger); II-2 (1);
Tll=4 (1); San Pedro and outer areas.
Diopatra sp. II-7; San Pedro areas.
disomid. San Pedro area.
Dodecaceria sp. San Pedro area at 256.
Dorvillea articulata Hartman. I SW-3; V-25; San Pedro area nr 42
7004) and other places.
Dorvillea gracilis Hartman. I W-1 (many); I NW-4 (134, some mature);
San Pedro areas.
Dorvillea sp. V=-6 (2); San Pedro and outer areas.
Drilonereis spp. (includes both D. falcata Moore and D. nuda Moore,
~ or also other species). I W-2 (1); I W-5; I W-7; I W-12; I W-12c
(3)3; I W-16; I W-17 (3); I W-17a; I W-19c; I SW-6 (2); I SW-7;
I Sw-8; I SW-93 I NW-3 (2)3 I NW-4; I NW-8 (2)3 I NW-9;.II-2;
E63 LEPl-2; \TLP-35 (9); Lll=-43 PIlI-S8; Ili-1l; IV-2)(5)3 IV-7;3
V-143; V-173; V-303; San Pedro and outer areas.
Ehlersia heterochaeta Moore. San Pedro area.
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Eteone californica Hartman. San Pedro area.
Eteone sppe I W-13b (1); San Pedro areas.
Euchone spe I1-W-12; II-9; San Pedro areas.
*Euclymene sp. I W-6 (many); I SW-5; I SW-7 (12 or more); I NW-3;
I NW-4 (4); I NW-9 (some); II-2 (8); III-2; III-3 (204); Iv-2;
IV-7; V-19; San Pedro and outer areas.
Euclymenini. V=-16; San Pedro areas.
Eulalia spp. I NW-4; I W-12a; San Pedro areas.
Eumida ?sanguinea Oersted. I SW-2; II-3 (2); II-7; San Pedro nr.
42 Crs and other areas.
Eumida spp. I W-2; I W-3; I W-4; I W-8; I SW-3; I SW-5; I SW-6;
SW-8; I NW-4 (7); II-2; II-7; V-18; San Pedro and outer areas.
Eunice americana Hartman. San Pedro area at 159.
Eunice aphroditois (Pallas). San Pedro area at 161.
Eunice spp. I W-10; I W-17 (2); I SW-8; II-7; San Pedro areas.
Euphrosine sp. I W-18; V-18 (1); San Pedro areas.
Evarnella fragilis (Moore). V-18.
Exogone spp. I SW-5; I NW-4 (26); III-3; San Pedro and outer areas.
Exogoninae. I W-2; II-3 (2); III-1; San Pedro and outer areas.
Fabricia sp. I W-16; San Pedro areas.
Flabelligera commensalis Moore. Commensal with Strongylocentrotus
purpuratus in shallow areas of Santa Monica and San Pedro areas.
flabelligerids (nestling in dead shells of Cadulus). I W-7; I W-19c;
III-10; III=-16; IV-2; San Pedro area.
flabelligerid. San Pedro area at 173 (20).
tGenetyllis sp. II-3 (2).
Glycera americana Leidy. I W-2; I W-4 (1 large); I W-5 (1 large);
I W-6 (1 large); I W-7 (1 large); I W-8 (2 smaller); I W-12
(2 smaller); I W-12c (large parasitized by nematodes);
I SW-1 (1 large and 1 small); I SW-6 ( 1 large); I SW-8 (1 giant);
I W-13a (1 large); I NW-4 (1)3 III-4 (1 large); IV-2 (1);
Iv-2 (1); V-11 (1 large); San Pedro and outer areas. ,
Glycera branchiopoda Moore. VI-5; VI-6; San Pedro and outer areas.
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8 (i I 12c (3); I W-16 (several);
W-19c (4); I NW-4; I ee ?II-7 (14);
I-6 (5); IV-2 (2)3 V- 4 (2); ?V-53
Glycera capitata Oersted. I W-
I SW=-8 Gee )3 I W-14a3 I
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Glycera robusta Ehlers. I W-10b (1 large).
Glycera tesselata Grube. V-18 (3); San Pedro and outer areas.
Glycera spp. I W-1; I W-7; I W-17; I W-19; I W-22; I SW-2; I SW-4 (7);
I SW-6 (204); I SW-7; I SW-9; I NW-5; I NW-7; II-3 (3);
Mims CA): Liisa Sis, Lic ((5)i¢) LLWSOls siebi— Oj ean tel lelena(oliep ne
V-6 (2); V=10; V-11; V-14; V-18; San Pedro and outer areas.
Glycinde spp. III-8 (2); IV-7; V-11; V-19 (2); San Pedro and outer
areas.
Goniada littorea Hartman. JIII-1 (12 mature).
Goniada brunnea Treadwell. V-=-4.
Goniada spp. I W-23; I W-3; I W-7; I W-8 (3); I W-16; I W-17 (5);
~— 1. W-19; I SW-2; I SW-3 (5); I SW-7; I SW-8 (5)3 I SW-9;
I NW-3 (17); I NW-7; I NW-8 (4); I NW-9; II-2 (4); II-3 (6);
Many is web G) Ce)s Ll l—'7 ou: TII-10 (5 large); III-11 (4);
g alll
( g
IvV-2 (2); IV-7; IV-9; V-5 (2); V-6 (2)3 V-8; V-
San Pedro and outer areas.
3 Vel7; V-183
goniadid, I W-13b; I W-14a; San Pedro areas.
Halosydna latior Chamberlin. San Pedro area at 45.
Halosydna spp. I SW-3; San Pedro and outer areas.
Haploscoloplos elongatus (Johnson). I W-2; I W-8 (2); I W-10b; I W-16;
T SW-1 (35); 1 SW-2; I SW-3 (7); I SW-4 (12); I SW-8 (1 104); I NW-2
(many); I NW-3 (134)3 i INW=8.(6) 3) Bi-d Gl ojuve)y Er=sn(ons
II-6; I1l-7 ye leh (S))) sepa G8 (/2)) is eli 4: (ZA) aeiciets} ((24)) 5
Tips (5)3 V-13; V-6 (6)3 V-11; V-19 (3); San Pedro and outer areas.
Haploscoloplos sp. I W-3; I W-4; I W-5; I W-7; I SW-9; I NW-4 (9);
V=-103; San Pedro areas.
Harmothoe hirsuta Johnson. San Pedro areas, rocky areas.
Harmothoe lunulata var. I W-2; I W-7; I W-163; I W-19c (5); I W-20;
T SW-9; 1 NW-4 (4); I NW-9; II-6 (8); II-7 (10); II-1; III-3;
Tica (CLO) Pe acca (ye acs y/ (4); III-8; IV-2 (2)3 V- SB V=-8
(2 with internal parasites); V-17; V-303 San Pedro and outer areaSe
Harmothoe triannulata Moore. San Pedro area at 69.
Harmothoe spp. I W-8; I W-14; I SW-6; I SW-8; I NW-8; III-10 (in ARbAG )) F
Iil=-113; San Pedro and outer areas.
harmothoid. V-30; San Pedro area at 126.
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sal b ea i“)
} &-W2: cite I per] ee oe a oN
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wha Oss may dD ret obey MARTE SRESV Ey Cia
setuo baa oehol wae 118) CUP Rl Woy to (w) aime
Bit:
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Ay 3 Ran Al i
ate onbat ned eke ere | aes > é
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mits ho bake, baba: Pa
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: TA Se OCR, RRR SE CO inde at
2 iy ! ; et @
et ae ey 8 om if Recta { a =
Ps Oa) i a | fay bes Te | a rom dey ates oi He oe alt one ser! y
WeewlT as-ti y(or) Cais mead acc kw +14).
vs. tT?) iia f r ; i :
ha * by («s)\ eee eo ae We ae Ne iyeo te 1 jie {
shan an uf ‘ ‘ = seal (Omaas Faw i et iv 1g 3 fin!
; hes 0 4 ’ ae i? a fee KR: ‘ +e }
vu Me MOST S789) Tae Obed he Al Y, ag H Ge, 4 , ms 7 vf it ti lls y :
Lees Pi ite vee Cd es ps eh ,
ceed ice a aes (as Ma ‘ aie | fi 3 jt “90 iy iM (® pa
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153
?Hauchiella sp. V-=-18.
Hemipodus sp. II-2.
hesionids. I SW=4; San Pedro areas.
Hesperalia, II-2; II-3 (4); San Pedro areas.
Heteromastus filobranchus Berkeley and Berkeley. II-3; V-25.
Hyalinoecia juvenalis Moore. I NW-8 (2); I W-12c; I W-lea; I W-14a (3);
San Pedro and outer areas.
Hydroides norvegica (Gunnerus). scrapings of hull of Velero IV.
Hydroides sp. San Pedro area at 212 and 249.
Hypoeulalia ?bilineata (Johnston). V-18; San Pedro area at 164.
Hypoeulalia sp. I W-1l (many).
Hypsicomus sp. I W-15a (many burrowing in shaley rocks).
Isocirrus longiceps (Moore). I W-12c; I W-13b; I W-14a; I W-17a.
?Isolda sp. San Pedro area at 46 and 89.
Labidognathus sp. San Pedro area at 82. (internal parasite).
Lagisca sp. V=18; San Pedro areas.
Lanice sp. I-12a (several); I W-17a; I W-22; V-23; San Pedro and
outer areas.
Laonice cirrata (Sars). San Pedro and perhaps Santa Monica areas.
Laonice sppe I W-23; I W-3; I W=-43 I W-7 (3 large); I W-14a; I W-17 (3);
I W-19; I SW-93 I NW-4; I NW-5; II-2 (2); II-3; II-6 (2)3 II-7;
III-1; III-93 III-103; III=11; IV-2 (2); V-1; V-4; V-5; V-19 (3);
V-233 V-3503 San Pedro and outer arease
Leanira spp. III=-6; V=-5 (2)3 San Pedro and outer areas.
?Leiochrides sp. III-6.
Leocrates sp. I W=-2; I W-7; I W-8; I W-18 (6); I SW-3 (3); I SW-6 (2);
I SW-8 (2); I NW-33 I NW-4; II-33; II-63 II-7 (2); III-4; V-16;
V-19 (2)3 V-21 (2)3 V-25 (2)3 San Pedro areas.
Lepidasthenia virens Johnson. San Pedro areas.
Lepidasthenia spp. I W=17 (2)3 I NW-5; II-8; III-2; III-3; III-11;
V=43; V-153; San Pedro areas.
Lepidonotus sp. I W-12c; I W-17 (3); V-18 (2); San Pedro areas.
—————————————E
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BOGS.
154
Loandalia fauveli Berkeley and Berkeley. San Pedro area at 108.
Longosoma catalinensis Hartman. Vicinity of Santa Catalina and San
Clemente islands.
Lumbrineris bicirrata (Treadwell). I W-8 (1); I W-l2a; I W-12c; I W-19c;
-7 (3)3 V=4; V-21 (1 very large, ?giant); San Pedro and outer
areas.
Lumbrineris bifilaris Moore. III-4 (2); ?V-5; San Pedro areas.
Lumbrineris californiensis Hartman. III-4; III-6; San Pedro and outer
Areas.
Lumbrineris cruzensis Hartman. I W-10b (many); I W-12c (12); I W-17a;
~ . W-19c; 1 SW-3 (26); I SW-6 (many); I SW-9; II-2 (17); II-3 (12);
III-2; III-3 (24); IIlI-6 (35); III-8; III-10; IV-2; V-4;
V-173; V-233; V-30; San Pedro and outer areas.
Lumbrineris erecta Moore. San Pedro area; scrapings from hull of the
VELERO IV.
Lumbrineris index Moore. V-6 (6 large); San Pedro and outer areas.
Lumbrineris japonica (Marenzeller). San Pedro and outer areas.
Lumbrineris latreilli Audouin and Edwards. I W-12c (1).
Lumbrineris limicola Hartman. I NW-3 (1).
Lumbrineris minima Hartman. San Pedro and outer areas.
I W-6; I W-7; I W-9; I W-123
Lumbrineris spp. I We2; I W-3; I W-4;
I SW-3; I SW-6; I SW-7; I SW-8;
ili
I W-14; I W-173 I SWel; I SW-23
I NW-13; I NW-43 I NW=-53 I NW-73 NW=8 (67 or more); II-1;3
II-3 II-7 (more than 100); III-1 (25); III-2; III-4; III-7;
III-11; IV-7; IV-83 V=13; V-2; V-53 V-73 V-153; V-16; V-17;
V-3503; VI-4; San Pedro and outer areas.
Magelona pacifica Monro. I W-8; I SW-7; I1I-6; outer areas.
Magelona, pouched. I SW-3 (20 or more); I SW-4 (18); II-2 (15);
WSS) (AUS}) Bo Wea
Magelona spp. I W-2; I W-4; I W-5; I W-7; I W-9; I W-10; I W-12a;
I W-13b; I W-14; I W-17; I W-17a; I W-22; I SW-2; I SW-65
I SW-8; I SW-9; I NW-3 (10); III-1 (8)3 III-2; III-3; III-4;
III-7; IV-23; San Pedro and outer areas.
Maldane spp. I W-19c3 I SW-8; I NW-8; III-3; III-4; III-6; I1I1I-7;
TiI-1l; IlI-12; IV-2; IV-8 (about 15): V-14 (many ) 3 V-163 V-173
V-203 V-23 (more than 50); V=30 (many); San Pedro and outer areas.
Maldanella robusta Moore. San Pedro areas.
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155
maldanids of different kinds. I W-23 I W-3; I W-4; I W-5; I W-"7;
I W-8; I W-12; I W-14; I W-19; I SW-6 (many); I SW-8; I SW-9;
I NW-5; I NW-7 (many); II-3 (7 or more); II-8; III-4; III-7;
ITI-83; III-10; III-11; IV-3; IV-5; IV-6; V-1; V-4; V-63; V-10;
V-11 (10 or more); V=193; V-23; V-30; San Pedro and outer areas.
Marphysa mortenseni Monro. II-1; outer areas.
Marphysa, resembles conferta Moore. I W-5 (3); I W-6; I W-7 (4);
I W-8; I SW-8 (4)3 I NW-7; I NW-8, II-7 (8)3 I
San Pedro and outer areas.
Marphysa sp. V=-19; San Pedro area.
Megalomma spp. I W=+73; I W-l2d; III-2; III-3; III-6; III-8; vV-4;
San Pedro and outer areas.
Melinna sp. I W-19c I SW-7; I NW-4; I NW-73 III-2; III-3; III-11;3
IiI-123 IV=-3; V-193 V=-203 V=233 San Pedro and outer areas.
Mesochaetopterus sp. IJIII-10; III=-11; III-12; V-6; V-10; V-11; San
Pedro and outer areas.
Myriochele gracilis Hartman, I W-123; I W-13b; I W-17a; II-7; III-6;
Iffel1l3; Ili=-153; IV-2; V-11; V=-23; San Pedro and outer areas.
Myxicola sp. III-6; San Pedro and outer areas.
Nephtys caecoides Hartman. I We2; I W-33; I SW-1; I SW-2; I NW-8;
IIl-2; III=-13 III-2; San Pedro and outer areas.
Nephtys californiensis Hartman. I W-1 (15); II-7; San Pedro and outer
areas.
Nephtys ferruginea Hartman. I W-6; I W-73; I W=19c3 I SW=-3; I SW-6;3
t SW-83 I SW=9: II-3; II+6; IV-23 V-1; V-4; V-53; San Pedro and
outer areas.
Nephtys spp. I W-3; I W-43 I W-5; I W-73; I W-83 I W-12; I W-12a;
I W+143; I W-163 I SW=33 I SW=-5; I SW-8;I SW-93; I NW-43 I NW-8;
ILS 8 IY RB ISSR ILI" IITIL Oh IGILIGS} 3) IEICE B ICIE bala Wot} 8
V=-153; V-19; V=-203; V=-253; San Pedro and outer areas.
Nereis procera Ehlers. I W-23 I W-43; I W-5; I W-7; I -W-8; I SW-1
70 or more)3 I SW=-2; I SW-3 (36 or more); I SW-6 (15);
I SW-7; I SW-83; I NW-3 (28 or more); I NW-4 (37); I NW-5;3
I NW=-73: I NW-8; Il-23 [1-33 Ii-63 II-7; III-8; V-2; V=-19;
San Pedro areas
Nereis sppo I We33; I W173; III=-13 IIlI=-23 V-18; San Pedro and outer
areas.
nereids. I W-223 IIT=-1ll3; V-73; V=-153; V=-193 San Pedro and outer areas.
?Nerine sp. I SW-6; III-3; IIlI-4; III-7; San Pedro and outer areas.
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156
Nino&’ spe I W-7; I W-8; I SW-6; I SW-8; II-7; II-8; III-7; V-25;
~ San Pedro and ousoR areas.
Nothria conchylega (Sars). I W-193; San Pedro and outer areas.
Nothria elegans (Johnson). I W-2 (10 or more); I W-3; I W-4; I W-12a;
I W-14; I SW-1 (6 or more); I SW-2 (many); I SW-3 (35 or more);
I NW-1 (many); I NW-3; II-3; III-1 (5); III-3 (6); III-6; V-2;
San Pedro and outer areas.
Nothria geophiliformis Moore. San Pedro and outer areas.
Nothria iridescens (Johnson). San Pedro and outer areas.
Nothria pallida Moore, JiI-10; V-10; V-=173 San Pedro and outer areas.
Hohite spp. i W=6y Ii]-@; IIlIe@3; IiI-11; IV=3} V-63 V-63 V=20) Vedi}
edre and outer areas.
Notemastus hemipodus Hartman, San Pedro areas.
Notomastus lobatus Hartman, I Wel4a; San Pedro areas.
Notomastus magnus Hartman. III-3; San Pedro areas.
Notomastus tenuis Chamberlin. San Pedro and outer areas.
Notomastus spp. V=-6; San Pedro and outer areas.
Notoproctus sp. I W-17 (3); San Pedro areas.
Odontosyllis spp. San Pedro and areas.
Oncoscolex sp. San Pedro and outer areas.
Onuphis eremita Audouin and Edwards. II-2; San Pedro and outer areas.
Onuphis nebulosa Moore. I W-73; I W-8; I W-10; I W-12; I uae (many) 3
Steen TW-1l and I W-15; I W-13; I W-13b (many); I
I W-l4ea; I W-16; I W-17a3 I SW-6; II-2 (many); II-3. teas
III-3; San Pedro and outer areas.
Onuphis parva Moore. III-10 (30); San Pedro and outer areas.
Onuphis vexillaria Moore. IV-7; IV-8; V-23; San Pedro and outer arease
Onuphis spp. III-6; IV-2 (about 20); V=-2; V-17; V-18; V-19; San Pedro
and outer areas.
enuphids. I We22; I SW-103; I NW-83 II-3; III-5; IV<-3; IV-6; V=-l};
VelO; Vell; V-14; V=-23; San Pedro and outer areas.
Ophelia sp. San Pedro and outer areas.
orbiniid, new genus and species. III-16; IV-10; V-16; San Pedro areas.
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Qwenia fusiformis collaris Hartman. I W-17a; III-8; San Pedro and
outer areas.
Owenia spp. V-53; San Pedro and outer areas.
Panthalis pacifica Treadwell. I W-12; I NW-8; III-6; III-10; V-5;
an Pedro and outer areas.
Panthalis spp. I SW-6; III-7; V-4; San Pedro areas.
Paranaitis polynoides (Moore). I SW-8 (1); outer areas.
Paraonis spp. I W-3; I W-8; I W-12; I W-17; I W-19; I W-22; I SW-1;
I SW-8; I SW-9; I NWS 3 Dh= 2c) Ra i7 eT elie) lien Gye lel lf, ser sleatelvmms| elias
IV-7; IV-8; V-5; V-213; VI-4; San Pedro and outer areas.
Pareurytho# sp. II-8; San Pedro areas.
Pectinaria californiensis Hartman. I W-4; I W-5 (12); I W-6 (many);
~ . W-? (82); 1 W-8 (40); I W-9; I W-10 (90); I W-10b; I W-12 (9);
I W-12a; I W-12c (about 12); I W=-13b; I W-14a3 I W-16; I W-17a;
I W-19b (50 or more); I W-19ce (about 50); I W-20; I W-21 (many)
I SW-5; I SW-8 (17); I SW-10 (13); I NW-73 I NW-8 (25); I NW-9;
II-6 (2)3 II-7 (21): II-8 (many); ILII=-3 (2); III-4 (about 8);
III-5; IlI-6; IlI-7 (about 5)3 III-8 (34); III-9 (many); -~
III=-10 (some); III=-11 (1); IV-2 (56); IV=-33 V-1; V-3 (many);
V-4 (6)3 V-5 (many); V-6 (many tubes); V-8 (12); V-103; V-11
(50 or more); Vel7 (many); V=-19 (many); V-e2l (5 lapeen V=233
San Pedro and outer areas.
°
3
Peisidice aspera Johnson. I W-12d; I W-17 (6); San Pedro and outer areas.
Perinereis monterea Chamberlin. San Pedro and outer areas.
Petaloproctus sp. V=23 (2 or more); San Pedro areas.
Pherusa capulata (Moore). I W-12d (many); I W-12c; I W-13b; I W-14a
18 or more); I W-193 I W-20; III=4; San Pedro and outer areas.
Pherusa inflata (Treadwell). I W-12d3; San Pedro and outer areas.
Pherusa papillata (Johnson). I W=13b; I W-17a3 San Pedro and outer
areas.
Pherusa spp. I We23 I W-33 I W- a I W-53 I W-73 I W=-173; I W-21 (many);
I SW-6 (20); I SW-7; I SW-8 (8): I NW-33 I NW-4 (10); I NW-7;
I NW=-8; II- 3; TI-7 (18)3 LTII-S (10); IIll-43; ILI-8; V-53; V-6;
V=73 Vell; V-153 V=18; V-19; V-233; San Pedro and outer areas.
Pholo’ sp. I W=-5; I W-73; I W-8 (many); I W=-9; I W-10b; I W-12a;
I W-1l2c; I W-163 I W-173 I W-17a3; I W-193 I W-19c3 I W-20;
I SW-6; I SW-73; I SW-83 I SW-9; I NW=-7; II-63 II-7 (about 150);
ILS SA LIENS) (many) 3 PLV—6) (42 )2 LLi=7 (about 20)s) ELE—a(9));
San Pedro and outer areas.
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158
Phyllochaetopterus prolifica Potts. I W-33; I W-12c; between I W-11 and
I W-15; I W=13b; Ll W-14; I W-14a; I W-16; I W-17; I NW-4 (about 30);
II=-2 (10); II-3 (50 or more); III-3; 5; San Pedro and outer areas.
Phyllochaetopterus sp. (in impoverished deep area). VI-1; VI-2; VI-3;
VI-5; VI-6; VI-10; VI=-11; VI-12; VI-13; San Pedro Impoverished Area.
Phyllodoce ferruginea Moore. San Pedro and outer areas.
Phyllodoce spp. I W-2; I W-3; I W-4; I SW-23; I SW-8; I NW-3; I NW-9;
Iif-=1l3; IlI=-6; V=14; San Pedro areas.
phyllodocids, various. I W=7; I W-17; I SW-63; II-7; San Pedro areas.
Pilargis berkeleyi Monro. I W-17a; III-7b; San Pedro areas.
Pilargis maculata Hartman. IJII-7; III-1; San Pedro areas.
Pilargis spp. I We53 I W-7; I NW-33; IV-73; V=21; V-253; San Pedro and
outer areas.
Pisione, near remota Southern. II-1 (many); San Pedro area at 63b (many).
Pista, resembles cristata (Miller). I W=83; I SW-8; I NW-8; San Pedro
areas. :
Pista disjuncta Moore. San Pedro and outer areas.
Pista elongata Moore. Between I Well and I W-153 San Pedro and outer
areas.
Bistasppe I W123 Tf W=l2c; TI W=lda; Il-=33 2l-7; IlI-73; Ell=8 (about 2495
IV-23; V-5; San Pedro and outer areas.
Placostegus sp. I W=l5a; I W-223 outer areas.
Platynereis bicanaliculata (Baird). I SW-1 (6)3 I SW=3 (6); II-2 (1)3
Ti-5 (4); Iil-3 (1); San Pedro and outer areas.
Platynereis sp. III-13; IIIi-2.
Podarke pugettensis Johnson. I W=-2; nr. I W=18; I SW-7; II-2; II-3;
San Pedro and outer areas.
Poecilochaetus johnsoni Hartman. I W-73; I W-19c; I SW-7; III-13
Il=63; lil=-73; San Pedro and outer areas.
Polycirrus spo I W=7$; San Pedro and outer areas.
Polydora, near armata Langerhans. San Pedro areas.
Polydora citrona Hartman. San Pedro areas.
Polydora ligni Webster. San Pedro areas; fouling on hull of VELERO IV.
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159
Polydora spp. I W=7; I SW-6; ABAC EL) ML AGAG ye) aE) IG IIE al (aye Vell; V-18;
San Pedro and outer areas.
polynoids, III-15; IV-3; vV-6; Vell; V-14; V-23; V-25; San Pedro and
outer areas.
Polyodontes, near panamensis Monro. San Pedro and outer areas.
polyodontids. V-1; V~9; V=103 V-14; V-27.
Praxillella affinis pacifica Berkeley. JII-7 (6); III-6 (2); San Pedro
and outer areas.
Praxillella ?gracilis (Sars). V=5: San Pedro areas.
Prionospio ?cirrifera Wiren. JII=3; II=-6; V-5; V-11; San Pedro areas.
Prionospio, near malmgreni Claparede. I W-10; I W-12 (46 or more) 3
Il W=4e : I W=-16 taeny): I W-19c3; I SW-6 (about 100); I NW-3 (more
than 50); I NW-7; I NW-9; II-2 (120 or more); III-3 (40); II-7
(60); III-1 (about 30); III-4 (about 10); III-6; III-7; Iv-2;
V=23 V-43; V-10; San Pedro and outer areas.
Prionospio pinnata Ehlers. I W-23 I W=43 I W-5; I W-7 (12); I W-8;
I W-10; I W-Ie2 (5); I W-l4a; I W-163 I W-19c; I SW-1; I SW-6
(about 40); I SW-8 (about 10); I NW-33 I NW-4; I NW-8 (17);
i NW-93 II-2; II-353 II-6 (more than 8); II=7 (24);-II=-8 (many);
IIit-2; III-3 (5); I1I=-43 III-6 (about 10); III-7 (6 or more);
fiT=8 (4)/3 LIL-103 Irl=-11 (many); IV=23 IV-7:; V-43 V-5; V=11 (8);
V=-173; V-19; V-21l (10 large)3 V=23; V=25; San Pedro and outer
areas.
Prionospio spp. I W=2 (many); I W-33; I W-6; I W-8; I W-10; I W-14;
er Wet? : I SW=23; I SW-53; I SW-8 (many); I.SW-9; I NW-4 (10);
I NW-8 (50 or more); II=83 III-3; III-9; III-1l1 IV=-9; V-4;
V-1l53 V=-233 V=-303; San Pedro and outer areas.
Protis pacifica Moore. ViI-33 VI-6; VI=10; VI-11; impoverished area
in San Pedro Basin.
Protula superba Moore. Deep basins, associated with siliceous sponge.
Psammolyce sp. III-2; San Pedro and outer areas.
Pseudopotamilla occelata Moore. nr. I W-14; San Pedro and outer areas.
Pseudopotamilla sp. II=-35; San Pedro areas.
Rhamphobrachium sp. San Pedro and outer areas.
Rhodine bitorquata Moore. I W=73; I W-8; I W-12; I W-12c;3 I W-13b;
I W-19¢e; I W-20; I SW-8; I NW-9; III-43; III-9; III-11; IV-2
IV=33 San Pedro and outer areas.
Rhynchospio arenincola Hartman. San Pedro areas.
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Sabella, resembles crassicornis Sars. I W-12; San Pedro and outer areas.
sabellids. I NW=4 (about 10); I NW-8; III-11; V-5; V-8; V-11; V-16;
V-25; San Pedro and outer areas.
Sabellaria cementarium Moore. I W-12c; I W-13a; I W-13b; I W-14a;
an Pedro and outer areas.
Ssabellaria sp. I NW-4; I W-173; San Pedro and outer areas.
Saccocirrus papillocercus Bobretzky. San Pedro area at 50.
Salmacina sp. San Pedro areas.
Scalibregma sp. I W-5; I W-8; I W-14a; I W-16; I W-17a; I W-20;
I SW=-6; I SW-8; I NW-4 II-4; II-7; III-4; III-6; III-8; III-11;
V-8; Vell; V-19; V=23 (a giant); V-253 San Pedro and outer.
areas.
Schistocomus spo I W-l2c; San Pedro and outer areas.
Sigalionids. I W-1l2c; I SW=-8; II=73 IV=-73 V=-13V-53 V-16; San Pedro
and outer areas.
Sphaerodorum minutum Webster and Benedict. I W-12; I W-12b; I W-14;
I SW-63; III-7; III-113; V-5; San Pedro and outer areas.
Sphaerodorum spp. I W-53 I W=-12; I W-17; I SW-5; I NW-3; III-10;
IV=2; San Pedro and outer areas.
Telepsavus sp... .-. I Wel3 I SW-23 I NW-3;: I NW-93 II-63 IIl=-7; III-7;
V=43; V-103; San Pedro and outer areas.
Spionids. I W-93; I W=19; I W=-20; I We223 III-8; III=-93; III-103
IV-23; V-43 Ve-14; San Pedro and outer areas.
Spiophanes missionensis Hartman. JI W-12c3; I W-19c3 I NW-7; II-23
Ti=7; San Pedro and outer areas. :
Spiophanes (or also Laonice) spp. I Wel; I We4; I W-7; I W-8; I W-14;
I SW=-63; I SW-S3 I NWe33 I NW-5; I NW=83 II-33 II-6; II-83; III-3;
III-73; IlI-83; III-103; III=-11; San Pedro and outer areas.
Spiophanes, deep water species. V1I=-53; outer basins
spirorbids. I W=-153; I W=-223 San Pedro and outer areas.
Sternaspis sp. I W-53; I W-6; I W-7; I W-12; I W-16; I NW-7; I W-17a;
mep=o% Tii=-33; Lil—j-4¢ Lil—<6s 2Ll=73 Tll=8; ILE=1is V-13 V4;
V-103; San Pedro and outer areas.
Sthenelais tertiaglabra Moore. III-6; San Pedro and outer areas.
Sthenelais spp. I W-2; I W-5; I NW-33 II-23; III-4; V-4; San Pedro
and outer areas.
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Sthenelanella uniformis Moore. I W-5; I W-73 I W-13a; I W-14a (about
14)3 © W-16; I W-i7a; I W-20; I W-22; I SW-6; I SW-7; I SW-8;
I SW-9; I NW-5; I NW-73 I NW-83; II-3; II-73 III-4; III-6; III-7;
III-8; San Pedro and outer areas.
Streblosoma crassibranchis Treadwell. I W-8; III-2; III-6; III-7;
San Pedro and outer areas.
Syllids. I W-16; I W-17; I W-22; I NW-3; I NW-4; II-3; San Pedro and
outer areas.
Syllis spp. I W-2; I W-33 I SW-7; II=-23; III-1 (10); III-6; San Pedro
and outer areas.
Talehsapia sp. IJI=-33 San Pedro area.
Telepsavus, see preceding page
Merebellides spo I W-53; I W-73; I W-8 (8)3 I W-12a3 I W-12c3 I W-13b;
I W-14; I W-17a3; I SW-8; I NW-9; II=7; III-2; III-3; III-4; III-6;
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V=-253; San Pedro and outer areas.
terebellids. I W=-143; I W-17; I SW-63; II-2; II-73; III-23; III-6; III-11;
IV-9; V=33 V-19; San Pedro and outer areas.
Thalenessa spinosa (Hartman). III-6; San Pedro and outer areas.
Thalenessa spp. I W-1l2a; I W-17a; I SW-6; II-2; II-3; San Pedro and
outer areas.
Tharyx multifilis Moore. I W-19; San Pedro and outer areas.
I SW-3; I SW-4 (many); I SW-6
Tharyx parvus Berkeley. I W-2 (many)
many) 3 San Pedro and outer areas.
3
I NW=-7 (many); III-1; V-2;
Tharyx, with tattered tube. I W-13b; I W-19c; I NW-7; outer areas.
Tharyx spp. I W-3; I W-10b; I W=-14; I W-17; I SW-23; I SW-8; I SW-9;
I NW-3 (many); I NW-4 (33); II-2 (many); II-3 (10 or more);
III-33; IIlI=7; IIlI=-11; V-4; V-21; San Pedro and outer areas.
Thelepus crispus Johnson. San Pedro and outer areas.
Travisia ?olens Ehlers. IV=-23 outer areas.
Travisia ?pupa Moore. I W-135b; III-6; San Pedro and outer areas.
Travisia spp. I W=-16; I SW-8; I SW-10; II-7; III-5; III-7; V-4;
=-9; V-153; San Pedro and outer arease
Vermiliopsis multiannulata (Moore). I W-15a; San Pedro and outer areas.
Vermiliopsis spp. I W-12d; I W-14a;I W-l5a; I W-22; San Pedro and
outer areas.
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