eh he PORT OF
THE LAGUNA MARINE
LABORATORY AND CON-
TRAIBUTIONS FROM THE
ZOOLOGICAL LABOR A-
TORiOr POMon A
COLLEGE

INDEX

I. List oF SPIDERS FROM THE CLAREMONT-LAGUNA REGION.
Il. Tentative List oF HEMIPTERA FROM THE CLAREMONT-LAGUNA
REGION eps tead cesisiors si eit ease wide Ene seman Charlotte Johnson, Ruth Ledig
Ill. THe CENTRAL NeERvouS SYSTEM OF A CUMACEAN........ William A. Hilton
[VEGAN DS MIO USCS NEARS Cl AREIMOIN crete leictsretonsiete otis rife eter Ivan Johnson
V. MoLLusco:DA AT LAGUNA BEACH.
VI. PRELIMINARY List OF BUTTERFLIES FROM THE CLAREMONT-LAGUNA REGION.
VII. A Tentative List oF Morus FROM THE CLAREMONT-LAGUNA REGION.
VIII. SUGGESTIONS FROM THE STUDY OF THE CENTRAL NERVOUS SYSTEM
ORMUINVERIGSER RIATES Meters. coos aouc, cus eo cet ere ioe coche asians Sisiegemn Sons W. A. Hilton
DXG dre NERVOUSHSYSTEM! OF: HpEYSAUNIURIAG te ete setere cycler isl eiteyo) citer syelleser ere W. A. Hilton
X. Earty SPECIMENS OF HYMENOPTERA FROM THE CLAREMONT-LAGUNA
RIECIONG ORE etnias en ee OR ee Charlotte Johnson and Ruth Ledig
: XI. COLEOPTERA FROM THE CLAREMONT-LAGUNA REGION............ Lea Myers
NEMA CEAREMONTICAGUNAY DIPTER'Ay oe eres core see ise oe treet: Walter Sturgis
XIII. Isopops FROM THE CLAREMONT-LAGUNA REGION.
XIV. A List oF SomME ADDITIONAL SHRIMP-LIFE CRUSTACEA FROM
LEIS WEN TA IIIA GE pore orci rete tae eae eee tre cee Beeches eee oes oe W. A. Hiiton
XV. SoMe AMpHiIpops COLLECTED DURING THE SUMMER OF 1916 AT
TAG UINIAY UDINE teak Sot ora a fe sa eu GTtoe esi on Te ag eRe RS Re cits M. Shaw

XVI. Crags TAKEN AT LAGUNA BEACH IN THE SUMMER OF 1916..H. H. Nininger

XVII. CoNNECTIONS BETWEEN NUCLEUS AND CYTOPLASM........... W. A. Hilton
XVIII. CENTRAL GANGLIA OF SOME DECAPOD CRUSTACEA............ W. A. Hilton

XIX. Nores oN THE CENTRAL NERVOUS SYSTEMS OF HoLoTHURIANS..W. A. Hilton

XX. COELENTERATES FROM LAGUNA BEACH......... H. H. Nininger, A. M. Bean

XXI. Nores ON ANNELIDS COLLECTED DuRING1917 at LAGUNA BEACH.

XXII. SoME CHITONS COLLECTED DURING THE SUMMER OF 1917.

XOXCMIE AS CUMACEAINSEROM™ICAGUINAG BEACH 55 pitecnts s-1-leis chasers H. H. Nininger
XXIV. A Parasiric Coprpop Founp aT LaGuNa BeacH.d. M. Bean, Harry Staples

XXV. NoTes ON THE CENTRAL NERVOUS SYSTEM OF HoLorHuRIANS...W. 4. Hilton
XXVI. NOTES ON FLAT WorMS AT LAGUNA BEACH...... W.L. Grow, D. L. Darsie
XXVII. BRANCHIOSTOMA CALIFORNIENSE GILL.

XXVIII. FurRTHER OBSERVATIONS ON THE MOUNTAIN SHEEP OF THE SAN GABRIEL
RUAN G ESAS ARSE to Ae Pee oder eo ee aenae He he eee W. A. Hilton

XXIX. SCORPIONS FROM THE CLAREMONT-LAGUNA REG:ON.

XOXO REE PHARTPOD AG © CCIDENAAIEISH naar teiery einen eicie ae ueretneieicacieieie iene J. Caldwell
XONGXGIE SER OWISE: GARIN AMMAN rs pussies, oO at seinen ct che eeshel Sis catieere bus. sespenmiahseaeae Harry Staples
NEXEXGIS NOTES ONE SPONGES! Ah IGAGU NAW BEACH: seg. selina) ee cick: W.L. Grow

XXXIII. THe CENTRAL Nervous SYSTEM OF A LONG-ARMED SERPENT
SaaiANfeks ba Gani ea oP ce he Wan aR ny ote oe eer ee Sa RR REECE ny, Us BEE W. A. Hilton
XXXIV. DoOLICHOGLOSSUS PUSILLUS.
XXXV. PYcNOGONIDS COLLECTED DURING THE SUMMER OF 1917 AT
JE y AGRON) ved BS REGIE arse eae rec meth eR er Oi AT Ne UD oT - acatsieat CAI W. A. Hilton
XXXVI. SomME ECHINODERMS OF LAGUNA BEACH.
XXXVII. A List oF ODONATA CHIEFLY FROM LAGUNA BEACH........... DAE SD arsve
XXXVIII. A List oF SMALL MAMMALS FROM THE CLAREMONT-LAGUNA

ERE GION tay eeeee oe es co Eee eh OLIGO ee eotToleiekhs H. C. White

List of Spiders from the Claremont-
Laguna Region

Many lccal specimens have not yet been determined. We have no determined
specimens of those enclosed in brackets, although there are published records of these
species from our general region.

AVICULARIID 4
Bothriocyrtum californicum Camb. Eurypelma californicum Auss.

FILISTATID =
(Filistata hibernalis Hentz. Banks. Davidson, Los Angeles.)

DRASSID 4E
(Drassinella modesta Banks. Banks. Baker, Catalina I. Megamyrmecion californicum
Simon. Banks. Baker. Gunaphosa californica Banks. Banks. Baker. Zelotes
femoralis Banks. Banks. Baker. Z. maculata Banks. Banks. Baker. Herpyllus
angustus Banks. Banks. Cockerell, San Pedro. H. validus Banks. Banks. Baker.)
Sergiolus bicolor Banks. Ledig. Ledig.
PHOLCID 4
Pholcus phalangioides Fues. Ledig. Ledig.
SCYA ODIDZAZ
(Diguetia canites McCook. Banks. Davidson, Los Angeles.)
CLUBIONID -E
(Chiracanthium inclusa Hentz. Banks. Baker. Castaneria crocata Hentz. Banks.
Baker. Trachelas tranquilla Hentz. T. Californica Banks. Trachelas Sp. Gayenna
celer Hentz. Ledig. Ledig.)
AGALENID
(Agalina pacifica Banks. Banks. Baker. Catalina I. 4. californica Banks.)
(Cybaeus minor Banks. Banks. Baker.)
DICTYNID
(Dictyna sublata Hentz. Baker. Dyctyna calcarata Banks. Cockerell, San Pedro.
D. Volucripes Keys. Baker.)
THERIDIID-©
(Theridium tepidariorum Koch. Davidson, Los Angeles.) Laterodectus mactans.
Koch. (Diopenia pictipes Bank. Banks. Baker.)
(Europis californica Banks. Banks Baker. Steatoda grandis Banks. Baker.)
LINYPHIID2
(Bathyphantes pallidula Bank. Banks. Baker. Lophocrenum fasciatum Banks.
Baker. Erigone californica Banks. Banks. Baker.)
MIMETID /E
(Mimetus interfector Hentz. Banks. Baker.)

ARGIOPIDE

(Aranea angulata Clark. Davidson, Los Angeles.) A. gemma McCook. (4. pacifica
McCook. Banks. Baker. 4. oacensis Keys. Davidson, Los Angeles. 4. conchlea
McCook. Banks. Baker. Zilla californica Banks. Banks. Cockerell, San Pedro.
Cyclosa conica Pallas. Banks. Hutchinson, Los Angeles.) Agriope argentata Fab.
Moles. Moles. (4. trifaciata Forak. Hutchinson, Los Angeles. Leucauge hortorum
Hentz. Banks. Hutch). Meta menardi Lat.? Ledig. Ledig. Gasteracantha
maura McCook. Moles.

TETRAGNATHID
Tetragnatha laboriosa Hentz. Moles. Moles.

y Journal of Entomology and Zoology

THOMISID

(Xysticus californicus Keys. Davidson, Los Angeles.) X. gluosus Keys. Moles. X.
triguttatus Keys. Chamberlin. Moles.

(Runcinia californica Banks. Banks. Baker.) Misumena californica Banks. Banks.
Davidson, Los Angeles. M. alcatoria Hentz. Chamberlin. Moles.

(Thanatus triguttatus Keys. Banks. Baker.) Misumessus asperatus Hentz. Cham-
berlin. Moles. Philodromus pernix Black. Chamberlin. Moles. Tibellus duttonii
Hentz. Chamberlin. Moles.

SPARASSID E

(Olios fasciculatus Simon. Banks. Davidson.) O. abnormis Keys. Ledig. Ledig.
PISAURIDE

Dolomedes sp.?
LY COSID Ae

(Lycosa pacifica Banks. Banks. Baker. L. brunneiventris Banks. Banks. Baker.)
L. cinerea Chamb. Corwin. Corwin. L. carolinensis Walck. Johns. Pardosa sp.
Sossippus californicus Simon. Banks. Baker.) Pirata sp. Corwin.

OXYOPIDZ

Peucetia viridans Hentz. Moles. Moles.
ATDTID 7D

(Phidippus johnsoni Peck. Banks. Banks. Baker. P. orpifex McCook. Banks. Da-
vidson, Los Angeles. P. bicolor Keys. Banks. Baker. P. sp.?) .Marpissa cali-
fornica Peck. Johns. Johns. Dendryphantes vitis Cock. Banks. Banks. Baker.
D. harfordi Peck. Banks. Baker. Thiodina retarius Hentz. Banks. Baker.
Pellenes signatus Banks. Banks. Davidson, Los Angeles. P. elegans Peck. Banks.
Cockerell, San Pedro. P. tarsalis Banks. Banks. Cockerell, San Pedro. Pelicies
speciosa Banks. Banks. Baker. Metacyrba similis Banks. Banks. Hutch., Los An-
geles. M. teniola Hentz. Banks. Baker.

(Contribution from the Zoological Department of Pomona College)

Tentative List of Hemiptera from the
Claremont-Laguna Region

CHARLOTTE JOHNSON, RutTH LeEbDIG

This list has been compiled from the departmental collections of Pomona College.
At this time no attempt has been made to change the determinations of the first
specimens to keep pace with recent changes in terminology. Only the first record
of the collection of a species is given at this time.

SCUTELLERID 4
Sphyrocoris punctellus Stal. V.D. Baker. Claremont, Cal.
Eurygaster alternatus Say. ——. Baker. Mountains near Claremont, Cal.
Eurygaster shoshone Wirk. V.D. Baker. Claremont, Cal.
Homemus proteus Stal. V.D. Baker. Mountains near Claremont, Cal.
Homemus grammicus Wolff. V.D. Baker. Mountains near Claremont, Cal.
Homemus bijugis Uhl. V.D. Baker. Mountains near Claremont, Cal.
Stethaulax marmoratus Say. V.D. Baker. Claremont, Cal.

CYDNID

Pangerus margo Stal. Uhl. Baker. Claremont, Cal.
Geotomus parvulus Uhl. V.D. Baker. Mountains near Claremont, Cal.

(PLATASPID4)
Corimelena lateralis Fab. V.D. Baker. Claremont, Cal.
PENTATOMID

Brochymena pusticlata Fab. V.D. Baker. Claremont, Cal.

Peribalus limbalarius Stal. V.D. Baker. Claremont, Cal.

Banasa dimidiata Say. O.H. Baker. Mountains near Claremont, Cal.
Thyfanta perditor Fab. O.H. Baker. Claremont, Cal.

Murgantia histronicus Hunn. ——. Baker. Laguna Beach, Cal.

Nezara hilevris Say. V.D. Baker. Claremont, Cal.

Euschistus conspersus Uhl. V.D. Baker. Mountains near Claremont, Cal.
Euschistus impictiventris Stal. Uhl. Baker. Mountains near Claremont, Cal.

(ASOPID£)

Perillus splendidus Uhl. V.D. Baker. Claremont, Cal.
Zicrona caerulea L. O.H. Mountains near Claremont, Cal.
Zicrona cuprea Dall. O.H. Baker.
COREID E
Ficaria apicalis Dall. V.D. ——. Claremont, Cal.
Chelinidea vittiger Uhl. ——. Baker. Claremont, Cal.
Margus inconspicuus H.S. O.H. Baker. Claremont, Cal.
Catorhintha texana Stal. Uhl. Baker. Claremont, Cal.
Anasa tristis Deg. Claremont, Cal.
(CORIZID-£)
Harmostes reflexulus Say. Uhl. Baker. Mountains near Claremont, Cal.
Aufeius impressicollis Stahl. V.D. Baker. Claremont, Cal.
Liorhyssus hyalinus Fab. ——. Baker. Claremont, Cal.
Arhyssus punctiventris Dall. ——. Baker. Claremont, Cal.
Corizus scutatus Stal. V.D. Baker. Claremont, Cal.
Corizus indentatus Hambl. V.D. Baker. Mountains near Claremont, Cal.
Corizus hyalinus Fabr. V.D. Baker. Claremont, Cal.
Corizus lateralis Say. V.D. Baker. Claremont, Cal.
Corizus lateralis roseus Baker. V.D. Baker. Claremont, Cal.
Corizus viriclicatus Uhl. V.D. Baker. Claremont, Cal.
Corizus robustus Uhl. Uhl. Baker. Claremont, Cal.
Screntha triviltatus Say. ——. Baker. Mountains near Claremont, Cal.

+ Journal of Entomology and Zoology

Niesthrea lateralis roseus Baker. Baker. Claremont, Cal.

Niesthrea side Fab. scutatus Stal. Fab. Baker. Claremont, Cal.

Niesthrea side Fab. validus Uhl. Fab. Baker. Claremont, Cal.
(ALYDIDZE)

Tollius curtulus Stal. O.H. Baker. Claremont, Cal.

Alydus pluto Uhl. V.D. Baker. Claremont, Cal.

Alydus setosus Van D. V.D. Baker. Claremont, Cal.

Alydus curtulus Stal. V.D. Baker. Claremont, Cal.

Stachiochnemus apicalis Dall. V.D. Baker. Claremont, Cal.
(MEROCORID 2)

Corynochoris distinctus Mayo. O.H. Baker. Claremont, Cal.
(ANISOSCELIDE)

Narnia inormata Dist. Uhl. Baker. Claremont, Cal.
Loptoglossus occidentalis Neid. V. D. Claremont, Cal.

ARADID4E

Aradus lineatus Say. ——. Baker. Mountains near Claremont, Cal.
Aradus n. sp. . —. Baker. Claremont, Cal.
Aradus fallini Stal. V.D. Baker. Claremont, Cal.

NEIDID
Jalysus spinosus San. O.H. Baker. Mountains near Claremont, Cal.
Neides muticus Say. V.D. Baker. Mountains near Claremont, Cal.
LYGAIDA
Lygacus melanocroyphos Say. V.D. Baker. Claremont, Cal.
Lygacus pyrrhopterus Stal. V.D. Baker. Claremont, Cal.
Lygacus bicrucis Say. Uhl. Baker. Claremont, Cal.
Oncopeltus fasciatus Dall. Baker. Claremont, Cal.
(CYMIDZ)
Arphuus coriaceipennis Stal. Uhl. Baker. Mountains near Claremont, Cal.
Ischnorhynchus francissanus Stal. V.D. Baker. Claremont, Cal.
Cymus luridus Stal. V.D. — Laguna Beach, Cal.
(GEOCORIDE)
Geocoris palleus decoratus Uhl. V.D. Baker. Claremont, Cal.
Geocoris decoratus solutus Mont. Mont. Baker. Mountains near Claremont, Cal.
Geocoris uliginosus Say. limbatus Stal. Mont. Baker. Claremont, Cal.
(MYODOCHIDE)

Emblethis vicarius Horyv. V.D. ——-. Claremont, Cal.
Scolopostethus tropidalis Dist. V.D. Baker. Claremont, Cal.

(PACHYGRONTHID 4)
Peliopelta abbreviata Say. ——. Baker. Mountains near Claremont, Cal.
(HETEROGASTRID)
Heterogaster behrensii Uhl. V.D. Baker. Claremont, Cal.
(MYODOCHID 4)
Ozophora picturata Stal. ——. Baker. Mountains near Claremont, Cal.
Rhyparochromus sodalicus Uhl. V.D. Baker. Mountains near Claremont, Cal.

(ORSILLIIDZ)
Nysius californicus Stal. V.D. Johnson. Pine Lake, So. Cal. Mountains near
Claremont, Cal.
Nysius senecionis Schill—strigosus Uhl. ——. Baker. Mountains near Claremont,
Gailk
Nysius Angustatus—minutus Uhl.
Ortholomis cookit Baker. Baker. Mountains near Claremont, Cal.
Ortholomis arphnoides Baker. Baker. Mountains near Claremont, Cal.
Ortholomis longiceps Stal. ——. Baker. Mountains near Claremont, Cal.
Ortholomis langiceps Stal. V.D. Baker. Claremont, Cal.
Ortholomis arphnoides Baker. V.D. Baker. Claremont, Cal.

Baker. Mountains near Claremont, Cal.

Pomona College, Claremont, California

PYRRHOCORID

Largus convivus Dist. Uhl. Baker. Claremont, Cal.
TINGIDIDZE

Teleonemia nigrina Uhl. O.H. Baker. Claremont, Cal.
Conythuca setosa Champ. O.H. Baker. Claremont, Cal.
Piesma cinera Say. Uhl. Baker. Mountains near Clarement, Cal.
Corythucha V.D. Baker. Mcuntains near Claremont, Cal.
Corythyca sordidula Uhl Ms. Uhl. Baker. Mountains near Claremont, Cal.
Corythyca setosa Baker. Mountains near Claremont, Cal.
Corythucha catala O.H. Baker. Nor. Uhl. Claremont, Cal.

REDUVIID 4
(HARPACTORID 4)
Zelus incarnalis Bergs. ——. Baker. Claremont, Cal.

Sinea complexa Caud. O.H. Baker. Claremont, Cal., and mountains near.
Sinea diadima undulata Uhl. V.D. Baker. Claremont, Cal.

Sinea diadema Tabr. V.D. Baker. Claremont, Cal., and mountains near.
Zelus (Diptodus) socius Uhl. O.H. Baker. Claremont, Cal.

Zelus raptoria Stal. Uhl. Baker. Mountains near Claremont, Cal.
Pselliopus spinicollis Champ. V.D. Baker. Mountains near Claremont, Cal.
Rhyncoris ventralis Say. V.D. Baker. Claremont, Cal.

Darbanus georgias Prov. ——. Baker. Claremont, Cal.

Zelus cervicalis Stal. Uhl. Baker. Mountains near Claremont, Cal.

(ACANTHASPID 2)

Conorhinus productus Uhl. ——. Baker. Claremont, Cal.
Conorhinus protractus Uhl. Uhl. Baker. Claremont, Cal.

(PIRATID 4)

Rasahus biglutatus Say. Uhl. Baker. Mountains near Claremont, Cal.
Rasahus thoracicus Stal. V.D. Baker. Laguna Beach, Cal.

PHYMATID

n. var. Baker. Mountains near Claremont, Cal.
Baker. Mountains near Claremont, Cal.
(ENESID 4)
Baker. Claremont, Cal.
Baker. Mountains near Claremont, Cal.
Baker. Claremont, Cal.
Baker, Metz. Claremont, Cal.

HEBRID-®

Hebrus ornatus Uhl. Uhl. Baker. Claremont, Cal.
NABID 42

Nabis (ferus) Linn. V.D. Baker. Claremont, Cal., and mountains near.
MIRIDE

Lopidea indentata Uhl. Uhl. Baker. Claremont, Cal.

Lopidea nigridea Uhl. V.D. Baker. Claremont, Cal.

Closterocoris ornatus Uhl. Uhl. Baker. Claremont, Cal.

Clostocoris amenus Prov. V.D. Baker. Claremont, Cal.

Irbisia sericans Stal. V.D. Baker. Claremont, Cal.

Irbisia politus Uhl. Am.R. Baker. Claremont, Cal.

Pecilocapsus nigriger Stal. V.D. ——. Claremont, Cal.

Pacilocapsus lineatus Fab. Uhl. Baker. Claremont, Cal.

Peciloscythus elegans Reut. Om.R. Baker. Mountains near Claremont, Cal.
Peciloscythus uhleri Van D. V.D. Baker. Mountains near Claremont, Cal.
Systratiotus brunneosus Uhl. Uhl. Baker. Mountains near Claremont, Cal.
Trachycoris socius Uhl. Uhl. Baker. Mountains near Claremont, Cal.
Irbisia brachycerus Uhl. V.D. Baker. Claremont, Cal.

Lygus rubicundus Fall. Om.R. Baker. Mountains near Claremont, Cal.
Lygus Bakeri Reut. Om.R. Baker. Mountains near Claremont, Cal.

Phymata erosa L.
Phymata acutanaula Quer. —

Ploiaria californica Baker.
Barce banksti Baker.
Emesa brevicoxa Bks.
Ploiariodes tessellata Baker.

6 Journal of Entomology and Zoology

Lygus Pratensis Linn. O.H. Baker. Claremont, Cal.
Phytocoris roseus Uhl. Om.R. Baker. Claremont, Cal.
Phytocoris cunescens Reut. Om.R. Baker. Claremont, Cal.
Phytocoris ruforniptus Van D. V.D. Baker. Claremont, Cal.
Phytocoris Bakeri Reut. Om.R. Baker. Claremont, Cal.
Phyteocoris sp. V.D. Baker. Claremont, Cal.

Eugytatus simplex n. sp.

Reut. Baker. Mountains near Claremont, Cal.

Diaphnidia pellucida Uhl. O.H. and Om.R. Baker. Claremont, Cal.

Hycidea picta Uhl. V.D. Baker. Claremont, Cal.

Arthatylus chloronis Say. V.D. Baker. Claremont, Cale
Diaphnida hamata Van D. V.D. Baker. Claremont, Cal.

Tiryas elongatus Uhl. V.D. Baker. Claremont, Gal:
Plagiognathus moerens Reut. V.D. Baker. Claremont, Cal.
Plagiognatharia atomoscelis seriatus Reut. O.H. and Om.R.. Baker.
P. europiella umbrina Reut. Om.R. n. sp. Baker. Claremont, Cal.
P. macrotylus moebens Uhl. Baker. Claremont, Cal.

P. psallus sp. V.D. Baker. Claremont, Cal.

P. rhinacloa forticornis Reut. Om.R. Baker. Claremont, Cal.

Claremont, Cal.

Oncotylaria hoplomachus consors Uhl. Om.R. Baker. Clarement, Cal.
Cyllocoraria orthotylus planatus Uhl. Om.R. Baker. Mountains near Claremont, Cal.

Pilorphoraria pamilla Behrensit Uhl. Uhl. Baker. Claremont, Cal.

Dicypharia californicus Stahl. Om.R. Baker.

Dicyphus vestilus Uhl. V.D. Laguna, Cal.

Haboparia hadronema robusta Uhl. Om.R. Baker. Elsinore, Cal.
Haboparia hyoidea grisea Reut. Om.R. Baker. Claremont, Cal.
Haplomachidea consors Uhl. Om.R. Baker. Claremont, Cal.
Camplobrochis schwartz Uhl. V.D. Baker. Claremont, Cal.
Creontiades femoralis V.D. V.D. ——. Laguna, Cal.

Orthotulus planatus Uhl. Om.R. Baker.

GERRID-®
Hygrotrechus productus Uhl. Det.Uhl. Baker. Claremont, Cal.

Hygrotrechus remigis Say. Uhl. Baker. Mountains near Claremont, Cal.
Hygrotrechus robustus Uhl. Uhl. Var.Baker. Mountains near Claremont, Cal.
Gerris canaliculatus Say. ——. R.M. Mountains near Claremont, Cal.

VELIAD

Macrovelia abliger Uhl.M. Uhl. Baker. Mountains near Claremont, Cal.

Microvelia americana Uhl. Det.Uhl. Baker. Claremont, Cal.

(ACANTHIAD4) SALDID
Salda pallipes Fab. Uhl. Baker. Elsinore, Cal.
Saldula interstitialis Fab. V.D. ——. Laguna, Cal.
NOTONECTIDE
Buene. Baker. Claremont, Cal.
Claremont, Cal.

Notonetta americana
Notonecta indica Linn, V.D.

Notonecta insulata Kay. O.H. Baker. Claremont, Cal. Mountains near Claremont,

Cail:

Notonecta mexicana A.&S. ——. Baker. [Fieb. V.ceres] Claremont, Cal., and moun-

tains near.

Anisops pallidus Champ. Var. Uhl. Baker. Claremont, Cal.
BELOSTOMATID 4&

Serphus dilatatus
Abedus delatatus Say. V.D. Laguna, Cal.
Zaitha elliptica Lat. Uhl. Baker. Claremont, Cal.
Belostoma apache Kirk. V.D. Laguna Beach, Cal.

NAUCORID/E
Ambrysus signoreti Stal. Uhl. Baker. Claremont, Cal.

——. Baker. Mountains near Claremont, Cal.

Pomona College, Claremont, California 7

ANTHOCORID Zz

Triphleps insidiosus Say. Uhl. Var. Baker. Claremont, Cla. Mountains near Clare-
monte Cale

Anthocoris marginatus Uhl. Uhl. Baker. Mountains near Claremont.

Anthocoris antevolens B.While. Uhl. Claremont, Cal.

CORIXID £

(Corsa cube)—Callicorixa Kollorii Fieb.
Gak

Corixa sp. Baker. Claremont, Cal.

Corixa alternata Say. Uhl. Baker. Claremont, Cal.

Corixa mercenarica Say. Uhl. Baker. Elsinore, Cal.

Baker. Mountains near Claremont,

CICADID-E
Platypedia minsi Uhl. Baker. Claremont, Cal.
Okanagana blaisdelli Uhler. ——. Baker. Mountains near Claremont, Cal.
Okanagana rinosa sq. Say. Var. Baker. Mountains near Claremont, Cal.
Tibicen blaisdelli Uhl. ——. Baker. Claremont, Cal.

Baker. Claremont, Cal.
Baker. Claremont, Cal.

Tibicen cupres-sparsa Uhl.
Tibicen rinosa Say.

CERCOPID
Clastopterine clastoptera linneaticollis Stal. t—. Baker. Mountains near Claremont,
Cal.
Clastopterine clastoptera obtusa Say. ———. Baker. Claremont, Cal.

Clastopterine clastoptera binotata Ball. Baker. Mountains near Claremont, Cal.
Aphrophora sp. Baker. Claremont, Cal.

MEMBRACID< (SIMLIDE)

Stictocephala inermis Fabr. Var. Baker. Mountains near Claremont, Cal.
Stictocephala Franciscana Stal. Var. Baker. Elsinore, Cal.

Stictocephala lutea Wk. Baker. Claremont, Cal.

Micrutalis binaria F.WL.. v.paleus. Baker. Claremont, Cal.

Micrutalis binotata [|Gody]| Var. ——. Baker. Claremont, Cal.

Ceresine albidosparsa Stal. Baker. Claremont, Cal.

CICADELLIDZE (JASSID)

Paragomia 13-punctata Ball. F.H.L. Baker. Claremont, Cal.

Thamnotettix geminatus Van D. F.H.L. Baker. Claremont, Cal.

T. gloriosus Ball. F.H.L. Baker. Claremont, Cal.

T. mendicus Ball. F.H.L. Baker. Claremont, Cal.

Phelpsius spatulatus Van D. F.H.L. Baker. Mountains near Claremont, Cal.
Empocisca flavescens Fab. F.H.L. Baker. Claremont, Cal.

Dicraneura unipuncta Gill. Form. Baker. Mountains near Claremont, Cal.
Cicadula criogonum fasciculatum

Gnathodus impictus Van D.

Baker. Claremont, Cal.

Thamnotettix coquilletti Van D. ——. Baker. Claremont, Cal.
Uhleriella coquilletti Van D. ——. Baker. Claremont, Cal.
Platymstopius acutus San. —-——. Crawford. Mountains near Claremont, Cal.

Baker. Mountains near Claremont, Cal.
Baker. Crawf. Mountains near Clare-

Deltocephalus melsheimeriti Fh.

Typlocybinae typhlocyba tricincta Fn.
mont, Cal.

T. typhocyba obliqua.

——. Baker. Claremont, Cal.
T. typhocyba comes n. var. ——. Baker. Claremont, Cal.
T. typhocyba commissuralis Stal. Baker. Mountains near Claremont, Cal.
Empoasca alboreura Gill. Form. Baker. Claremont, Cal.
E. tessellata Fieb. Baker. Claremont, Cal.
E. viriedescens Walsh. ——. Baker. Mountains near Claremont, Cal.
E. pura Stal. Baker. Mountains near Claremont, Cal.
E. aureoviridis Uhl. Form. Baker. Claremont, Cal.
Dicraneura n. sp. near abnormis. Baker. Mountains near Claremont, Cal.
D. carneola Stal. . Baker. Mountains near Claremont, Cal.
D. fieberi Low. ——. Baker. Claremont, Cal.

8 Journal of Entomology and Zoology

(TETTIGONID)

Baker. Mountains near Claremont, Cal.
Baker. Mountains near Claremont, Cal.

Tettigonia circellata Baker.
T. hierglyphica Ball.

Draeculacephala minor Wek. Baker.
Oncometopia costalis Fab. ——. Baker. Mountains near Claremont, Cal.

(GYPONID4)
Ledra aurita L. ——. Baker. Claremont, Cal.

(BY THOSCOPID 4)

Idiocerus distinctus O. & B. ——. Baker. Mountains near Claremont, Cal.
Idiocerus musteus Ball. ——. Baker. Mountains near Claremont, Cal.
Idiocerus alternatus Fh. ——. Baker. Mountains near Claremont, Cal.
Agallia cinerea O. & B. ——. Baker. Mountains near Claremont, Cal.

FULGOROID
Ormenis pruinosa Say. ——. Baker. Claremont, Cal.

(DEEPHACID'Z:))
Liburnia consinilis Van D. ——. Baker. Mountains near Claremont, Cal.

Stabaera tricarinata Sag. D.L.C. Baker. Claremont, Cal.
Kormus californica Crawf. D.L.C. Baker. Claremont, Cal.

(DICT YOPHARID ZZ)

Belonocharis fumida Uhl. Baker.
Scolops palidus Uhl. V.D. Baker. Mountains near Claremont, Cal.

(ISSID AZ)
Orgernis |'Tropida chide] rhyparus Stahl. McC. Claremont, Cal.
Peltonotellus bivittatus Ball. ——. Baker. Claremont, Cal.

Naethus nigronervosus Xhelich? V.D. Baker. Claremont, Cal. Laguna.
Dyctidea [Hysteropterine] intermedia Uhl. Baker. Claremont, Cal.
Dyctissa mutata Mel. ——. Baker. Mountains near Claremont, Cal.
Neethus fenestratus Uhl. Mal. Baker. Mountains near Claremont, Cal.
Danepteryx manca Uhl. Baker. Mountains near Claremont, Cal.
Danepteryx lurida Mel. Baker. Claremont, Cal.
Issus dilatatus F. ——. Baker. Mountains near Claremont, Cal.

(CIXIID As)
Chlorodus ——. Baker. Mountains near Claremont, Cal.
Chlorodus viridia Mel. n-sp. & n.g. Baker. Claremont, Cal.
Oecleus [2] : . Baker. Claremont, Cal.
Cixius ===. Baker.” Elsinore, Cal.

CHERMID (PSYLLID)

Paratrioza occellata Crawf. Crawf. Baker. Claremont, Cal.

Paratrioza maculipennis Crawf. ——. Baker. Claremont, Cal.

Triozaida Californica Crawf. ——. Baker. Mountains near Claremont, Cal.
Aphalara calthe Linné. Crawf. Baker. Claremont, Cal.

A phalara pulchella Crawf. Baker. Claremont, Cal.

Calophya californica Schw. Crawf. Metz. Claremont, Cal.

Calophya triozomina Schw. Crawf. Baker. Claremont, Cal.

Psylla Americana Crawf. ——. Baker. Mountains near Claremont, Cal.
Psylla alni gossypiona Crawf. Baker. Mountains near Claremont, Cal.
Psyllopa ceanothe Crawf. Crawf. Mountains near Claremont, Cal.

Psyllopa minuta Crawf. ——. Baker. Claremont, Cal.
Trioza aurantiaca Crawf. ——. Baker. Laguna Beach, Cal.
Trioza albifrons Crawf. ——. Baker. Mountains near Claremont, Cal.

Trioza flori Crawf. Baker. Laguna Beach, Cal.

Me

OorInnN

Ne}

Plan of the central nervous system of Colurostylus . X10.

and Fig. 3. Cross sections of the brain, one half shown. X150.

Cross section
Cross section
Cross section
Surface view
Surface view
Surface view

of the first ventral ganglion. X150.

of one of the thoracic ganglia. X150.

of one of the upper abdominal ganglia. X150.
of one of the thoracic ganglia. X150.

of an upper abdominal ganglion. X150.

of the last abdominal ganglion. X150,

Land Molluscs Near Claremont

IVAN JOHNSON

LAND FORMS

Helix aspersa Muller. The common intreduced snail.

Glyptostoma newberryanum Binney. <A_ single specimen in the Biology class
collection of 1915-16.

E piphragmophora traski sub. zeche Bart. One live animal from Ice House Can-
yon. Altitude 6500 feet.

E. tudiculata (Binney). Apparently very common and variable.

Zonitoides arboreus (Say). Common under bark of trees along streams.

Limax flavus L. The common slug.

L. maximus L. Not so common as the last.

FRESH WATER FORMS
Planorbis trivolvis Say. Common in creeks.
Physa frontinalis acuta Drap. Abundant in reservoirs.
(Contribution from the Zoological Depariment of Pomona College)

Molluscoida at Laguna Beach

ENTOPROCTAN BRYOZOANS

Myosoma spinosa Robertson. These were obtained in considerable numbers from
the surfaces of wavy top shells, Astrea undosa’ Wood. These shells were dredged
in from ten to fifteen fathoms of water just off shore.

Barentsia gracilis Hincks. These were determined for us by Dr. Robertson.
Specimens have been collected every summer for the last few years. They occur
under stones at low tide. They have also been found in abundance on the under sides
of the worm cases of Sabellaria californica and under rock ledges. In spite of their

small size these little “bobbing heads” are quite evident in extensive areas.

FRESH WATER BRYOZOANS NEAR LAGUNA

During the summer of 1915 a number of specimens of fresh water bryozoans were
collected on submerged leaves in the medium-sized lake, six miles inland from
Laguna Beach. In the summer of 1917 no bryozoans were found in this lake, but
some were found at the south end of the more northern lake and at the east end of
the largest lake. Some of these were determined by Dr. Robertson as Plumatella
repens L.

ECTOPROCTAN BRYOZOA

The following have been determined from the papers of Robertson:

NON-INCRUSTING FORMS
AETEIDE
Aetea anguina Linn. Found oa brown alge.
EUCRATIID
Eucratea chelata Linn. Found on a dredged decorator crab.
CELLULARID
Menipea occidentalis Trask.
M.o. catalinensis Rob. From kelp holdfasts. Some on decorator crab.
Scrupocellaria californica Trask.
S. varians Hincks. Kelp holdfasts.
S. diegensis Rob. Under rocks, low tide.
BICELLARIUID
Bugula neritina Linn. Common under rocks. Also on piles at Balboa Bay.
Bugula Sp. Apparently not given by Robertson.
CELLARIIDE
Cellaria mandibulata Hincks. Abundant along shore.
VESICULARND =

At ichotoma Ver. Masses of what appeared to be this species occurred

@eung and also on the piles at Balboa Bay. This often

‘pycnogonids.

INCRUSTING BRYOZOA
MEMBRANIPORIDZE
Membranipora tehuelcha @Orbigny. Abundant on sea weeds, often large masses.
M. membranacea Linn. On large flat alge.
Membranipora sp.?

16 Journal of Entomology and Zoology

STEGA NOPORELLID
Thalamoporella roziert Aud. Abundant under rock ledges.

MUICROPORELLIDE
Microporella malusi Aud. On stems of holdfasts from deep water.

MyROIzoID2
Schizoporella hyalina Linn. Small patches on brown alge.

S. insculpta Hincks. On twigs or stems.
S. oligopus Robert. Dredged off shore.
Myriozum sp. One or more species seemed to belong to this genus. Dredged.

ESCHARID
Lepralia bilobata Hincks? A small bit dredged off shore.

Porella concinna Busk. On mussel shell.
Retopora pacifica Rob. Dredged.

CY CLOSTOMATA
CRISIID
Crisia geniculata Milne Edw. One of the common shore forms.
C. edwardsiana dOrbig. On a crab from deep water, 15 fathoms.
C pacifica Rob. Small bit dredged.
"TUBULIPORID
Tubulipora pulchra MacG. On broad surfaces of alge.
Idmonea californica d’Orbig. Dredged.
Crisulipora occidentalis Rob. Very common along shore.

LICHENOPORID
Lichenopora radiata Aud. Small patehes on seaweed.

THE SAND BRACHIOPOD

Glottidea albida Hinds. was first found by us, White and Hilton, at Balboa
Bay. The place where they were most abundant was a little cove just off from the
main bay. Here a narrow channel led to a rather deep pool. Here in the sand at
the edge of the peol about a dozen specimens were found.

A RECORD OF PHORONIS
During the summer of 1917 a number of specimens of Phoronis were collected
by White and Hilton. A study of some of these seems to show that they are Phoronis
pacifica Yorrey. This is the first record of an animal of this group so far south in
California.

(Contribution from the Zoological Department of Pomona College)

1917 Pomona College Journal of Eniomology and Zoology, Vol. IX, No. 4, December

Preliminary List of Butterflies From the
Claremont-Laguna Region

The specimens were chiefly collected in and about Claremont by
students in the past three or four years. Most of the drawings were
from-specimens collected by Peck. The drawings are by Miss Lucy
Smith, the three photographs by L. Cooper. We have F. Grinnell
to thank for suggestions as to identity and names in many cases.
All are natural size.

NYMPHAILED A
Anosia berenice Bates. Male. Fig. 1.
Anosia plexippus Linn. Male. Fig. 2.
Argynnis callippe Boisd. Male. Fig. 3.
A. semiramis Edw. Female. Fig. 9.
Melita chalcedon Doub.-Hew. Male. Fig.
M. gabbi Behr. Male. Fig. 6.
M. wrighti Edw. Male. Fig. 7.

an

Phyciodes mylitta Edw. Female. Fig. 10.
Junonia cenia Hub. Male. Fig. I.
Grapta satyrus Edw. (?). Male. Fig. 12.
Vanessa californica Boisd. Fig. 13.

V. antiopa Linn. Male. Fig. 14.
Pyrameis atlanta Linn. Male. Fig. is2

P. huntera Fabr. Male. Fig. 8.

P. cardui Linn.. Male. Fig. 16.

P. carye Hib. Male. Fig. 17.

Adelpha californica Butl. Female. Fig. 18.
Limenetis lorquini Boisd. Male. Fig. 19.
Satyrus charon Edw. (?). Female. Fig. 20.
S. sylvestris Edw. (?). Fig. 25.
Canomorpha ceres Butl. Female. Fig. 22. White.
C. galactinus Boisd. White.

C. californica Doub.-Hew. Brownish white.

136 Journal of Entomology and Zoology

LEMONIIDZE
Calephelis nemesis Edw. Male. Fig. 23. Many fine lines on

brown wings.
Lemonias vergulti Behr.

EYCAEINIDZE

Chrysophanus helloides Boisd. Male. Fig. 21. Red-brown.
Red near tip of hind wing.

Chrysophanus gorgon Boisd. Female. Fig. 26.

C. aorta Boisd. Female. Fig. 27. Brown.

Thecla halesus Cramer. Male. Fig. 28. Blue-purple. Cole.
Redlands.

T. iroides Boisd. Female. Fig. 31. Dark brown.

T. spinetorum Boisd. Red-brown.

T. sepium Boisd. Red-brown.

T. melinus. Hub. Fig. 30.

Thecla irroides Boisd. Female. Fig. 31. Dark brown.

Lycena polyphemus Boisd (7).

L. sonorensis Field. Female, Fig. 34. Male, Fig. 35. Blue,

red spots on wings.
L. enoptes Boisd. Female, Fig. 32. Male, Fig. 33. Male, blue.

Female, brown.
L acmon, Dbl. Hew. Male blue, female brown. Caudal spots

more marked.

L. amyntula Boisd. (7). Female, Fig. 37. Blue-brown.

L. pseudargiolus piasus Boisd. Male, Fig. 40. Blue.

L. marina Reak. Female, Fig. 41. Male, light brown. Female,
blue-brown.

L. exilis Boisd. Male. Fig. 42. Blue-brown.

L. hanno Stoll. (2). Fig. 36. Blue-brown.

L. sagittigera Field. Fig. 38. Male, blue. Female, blue-brown.

L. heteronea Boisd. Male, Fig. 39. Male, blue. Female, blue-

brown.
PIERIDZE
Euchle australis Grinnell. Female, Fig. 58. White.
E.. sara reakirti Edw. Female, Fig. 59. Wings orange tiped.

4

Pomona College, Claremont, California 137

Colias ariadne Edw. Male, Fig. 60. Female, Fig. 61. Yellow.

C. keewaydin Edw. Male, Fig. 63. Female, Fig. 64. Yellow.

C. harfordii Hy. Ed. Female, Fig. 65. Male, Fig. 66.

C. eurytheme Boisd. Female, Figs. 53 and54. Male, Fig. 67.

Pieris protodice Boisd.-Lec. Female, Fig. 68. Male, Fig. 69.
White.

Pieris rape Linn. Female, Fig. 70.

Meganostoma eurydice Boisd. Male, Fig. 56. Female, Fig. 57.
Male, orange. Female, yellow.

Meganostoma cesonia Stoll. (?). Male. Fig. 55. Yellow.

PAPILIONIDE
Papilio eurymedon Boisd. Male, Fig. 45. Light yellow and
black.
P. rutulus Boisd. Male, Fig. 44. Yellow and black.
P. zolican Boisd. Male, Fig. 46. Yellow and black.
P. asterias Cramer (?) Male, Fig. 43. Obtained from student
collection. Exact place of collection not known.

HES PER ERD As
Hesperia tesselata Edw. Fig. 47.
H. montivaga Reak. Fig. 48.
H. ericerorum Boisd. Fig. 49.
Thanaos clitus Edw. Fig. 50.
Atrytone melane Edw. Fig. 31.
Hylephila phyleus Daury. Fig. 52. Dark red-brown.

(Contribution from the Zoological Laboratory of Pomona College)

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1917 Pomona College Journal of Entomology and Zoology, Vol. 1X, No. 4, December

A Tentative List of Moths From the
Claremont-Laguna Region

For the past four or more years moths have been collected by a
number of students both in Claremont and at Laguna. The col-
lege collection previous to this time was brought together by
Charles Metz and many of the moths were determined by Smith.
The more recent collections are by P. A. Lichti, R. Shallenberger,
and a few others. Most of the recent determinations are by
‘Barnes and McDonnough and by Busck. In many of the speci-
mens great difficulty was encountered in making out the labels made
by many different people and so far as possible Dyar’s list was used
as a check on these names. The drawings were made by Miss Char-
lotte Johnson, the photographs by L. O. Cooper. In some cases
drawings seemed better than photographs, but there is no good
substitute for a specimen. All are natural size or very slightly re-
duced.

SPENGIDAE

Protoparce carolina Linn. Det. B., McD. Lichti, collector.
Claremont and Laguna Beach, Cal. Yellow spots on abdomen.
Fie. t.

Pholus achemon Drury. Lichti, collector. Claremont, Cal.
Fie. 2.

Celerio lineata Fab. Claremont-Laguna. Fig. 3.

Hyloicus drupiferarum A. and S$. Claremont. Fig. 4.

Pachysphinx modesta Har. Det. by B. and McD. Licht, collec-
tor. Claremont, Cal. Pink hind wings. Fig. 5.

Hemmorhagia thetis Bdv. B. and McD. Lichti and students.
Claremont, ‘Call. Fig. 6.

SATURNITDZ:
Samia rubra Behr. B. and McD. Lichti and students. Mfoun-

tains, Claremont and Laguna Beach. Fig. 7.
Pseudohazis eglanterina nuttalli Streck. Shallenburger. — Bray.

collector. Mt. San Antonio, 10,000 feet. Fig. 8, male; Fig. 9,
female.

126 Journal of Entomoiogy and Zoology

SYNTOMIDZ
Ctenucha multifaria Wik. B. and McD. Lichi. Laguna Beach.
Fig. 10.

EI rnOsimp At
Diacrisia vagans Bdv. B. and McD. Lichti. Laguna Beach.
Bios iil:
Tilice libermacula Dyar. B. and McD. Lichti. Laguna Beach.
Fig. 12:

Crambidia suffusa Dyar (?). B. and McD. Lichti. Laguna
Beach, Figw 3:
ARC EDA
A pantesis autholea Boisd. B. and McD. Lichti. Claremont.
Body red, tip of abdomen black. Fig. 14.
Eetypia clo Pack. B. and’ McD» Licht. Waguna Beach. Bios:
Archnis picta Pack. B. and McD. Lichti. Laguna Beach. Fig. 16.
Leptarctia californica decia Bdv. Peck. Claremont. Orange
hind wing. Fig. 17.
NOCTUID/A
Autographa biloba Step. B. and McD. Lichti. Laguna Beach.
Fig. 18.
A. californica Spey. B. and McD. Lichti. Laguna Beach.
Figs 19:
A. brassicae Riley. B. and McD. Lichti. Laguna Beach. Fig. 20.
Bryophila viridata Sm. Sm. Metz. Claremont. Fig. 21.

Admetovis similis Barnes. J. B.S. Metz. Claremont. Fig. 22.
Caradrina extimia Walk. J. B.S. Metz. Claremont. Fig. 23.
Copicucullia incresa J.B. S., J. B.S. Metz. Claremont. . Fig; 24.

Copablepharon sancte-inonice Dyor. B. and McB. Lichti. La-
guna Beach. Fig. 25.

Cirrhobolina mexicana Behr. B. and McD. Lichti. Laguna
Beache) ios 26;

Cenurgia adversa Grt. J: B.S. Metz. Claremont: Pies2z7:

Copibryophia angelica Grey. J. B.S., J. B.S. Metz. Clare

mont. Fig. 28.

Pomona College, Claremont, California 127

Catocala osculata Wulst. Hulst. and Shallenberger. —Shal.
Mountains near Claremont, 5,000 feet. Male. Fig. 29.

Euchidia cuspidea Abr. J. B.S. Metz. Claremont. Fig. 30.

Feltia annexa Tr. B.and McD. Lichti. Laguna Beach.

Galgula partita Gue. J. B.S. Metz. Claremont. Fig. 31.

Hadena. cuculliformis Grote. J. B. S. Metz. Claremont.
Bie. 32:

Hiliophila unipuncta Haw. J. B.S. Metz. Claremont. Fig. 33.

Agrotis ypsilon Rot. B.and McD. Lichti. Claremont. Fig. 34.

Heliothis obsoleta Fabr. B. and McD. Houghton. Rivera,
Cal. Fig. 35:

H. phlogophagus G. and R. B. and McB. Lichti. Laguna
Beach.. *Pigs3 6:

Heliophila-imperfecta J. B.S. B.and McD. Lichti. Laguna
eacha a mig: 317.

Inceta aurantica Hy.-Edw. B. and McD. Lichti. Laguna
Beach. Fig. 38.

Litocala sensignata Harvey. B. and McD. Lichti. Laguna.
Fig, 39.

Morrisonia mucens Hub. J. B.S. Metz. Claremont. Fig. 40.

Mamestra 4-lineata Mor. J. B.S. Metz. Claremont. Fig. 41.

M cuneate Grote. J, B.S. Metz: Claremont. Fig. 42.

Neuria proclivsta Grt. (?). B. and McD. Lichti. Laguna
Beach: Fig. 43°

Wecnumrivoalase in) |. B.cs:, Je B.S. Metz. — Claremont.
Fig. 44.

N. havile]. Bi S:, J. B.S. Metz. Claremont. Fig. 45.

Nauangana prolivalis Buly (?). B.and McD. Lichti. Laguna
Beach. Fig. 46.

Oncocnemis behrensis J. B. S., J. B. S. Metz. Claremont.
Fig. 47.

Mamestra montara J. B.S. J. B.S. Metz. Claremont. Fig. 48.

Laphygma obscura Riley. B. and McD. Lichti. Laguna Beach.
Fig. 49.

EL favemacuiata \. B..os.). BLS. Mctz. Claremont, Fig. 50.

Lepipolys perscripta Gue. B. and McD. Lichti. Laguna.
Kio. 51.

128 Journal of Entomology and Zoology

Peridroma saucia ] BS., J. B.S. Metz. Claremont. Fig. 52.
Pleonectyptera finitima J. B. S., J. B.S. Metz. Claremont.
Fig. 53:
Polia namesira montana J. B.S., J. B.S. Metz. Claremont.
Fig. 54.
Polia namestra quadrilineata J. B. S., J. B. S. Metz. Clare-
mont. q figs 5 5:
Polia aefkeni Grt. J. B. S., J. B.S. Metz. Claremont. Fig. 56.
Polia iclaudabilis Grt. B.and McD. Lichti. Laguna.
Trachea susquesa Grt. B. and McD. Lichti. Laguna. Fig. $7.
T. fumosa Grt. (near). B. and McD. Lichti. Laguna.
Trichoclea antica J. B.S.,B.and McD. Metz. Laguna. Fig. 58.
T. edwarsi J. B. S., J. B.S. Metz. Claremont. Fig. 59:
Syneda ochracea Behr. B. and McD. Laguna. Lichti. Fig. 60.
S. howlandi Grote. B.and McD. Lichti. Laguna. Fig. 61.
Scotogramma chartaria Grote. B. and McD. Lichti. Laguna
Beach. Fig. 62.
S:shetcha Edw: eB. 9.-..Metz=. Claremont:
Rancora senatocornis List. B. and McD. Lichti Laguna.
Fig. 64.
fetanoliiasgneta J: Bo S., ). Bb:
Zosteropoda histipes Grote. J.

S. Lichti. Laguna Beach.
Bos. Metz. “Claremont.
Xylomiges euridlis Grote. J. B.S.
X. perlubens Grote. J. B.S.
Zela (Homoptera) salicis Behr. Lichti Laguna. Fig. 67.
Laphygma frugiperdaS. and A. B.and McD. Lichti. Laguna.

Metz: Claremont. Fig-65-
fetz. Claremont. Fig. 66.

NOTODONTIDZ:

Cerura scolopendria Bdv. B. and McD. Lichti. Laguna.
Fig. 68.

C. cineria var. unceroides Dyar. B. and McD. Licht. Laguna.
Fig. 69.

IPA RIDE

Hemerocampa vellusta Bdv. B. and McD. Lichti. Claremont. |
Fig. 70.

Pomona College, Claremont, California 129

LASIOCAMPID/:

Epicnaptera americana ferruginea Pack. B. and McD. Lichti.
Laguna Beach. Red-brown color. Fig. 71.

Gloveria gargamella Stre. B. and McD. Lichti. Laguna Beach.
Fig. 72.

DI@PTID A

Phryganidia californica Pack . Shallenberger. Shallenberger.

Claremont. Fig. 73.

GEOMETRIDA:
Cymatophora (Itame) guenearia Pack. Band McD:~ Licht.

Claremont. Fig. 74.
Cosymbia eerrulaiae bade Band MieDs) Eichtr Claremont:

Rigs />:.
Diastictis fracturalis Zell. B. and McD. Licht. Claremont,
Bier 77:

Euphia implicata Gn. B. and McD. hichti. Laguna. Fig. 7/3:

Pe Wanceolita Lies Band McD. Wichti. Laguna. Light
colored. Fig. 75.

Eois granitaria Pack. B.and McD. Licht. Claremont. Darker
than the above. Fig. 76.

Glaucina golgolota Hulst. Metz. Claremont. Fig. 79.

G. epiphysaria Dyor. B. and McD. Lichti. Laguna.

Merochlora fascolaria Gr. B. and McD. Lichti. Laguna.
Pale green front wing. Fig. 80.

Marmarea occidentalis Hulst. Dyar. Metz. Claremont. Fig.
Bale

Neoterpes edwardsata Pack. Dyar. Metz. Claremont. Fig.
82.

Perizoma custodeata Guen. Dyar. Metz. Claremont. Fig. 83.

Platea californiaria H. 8. Dyar. Metz. Claremont. Fig. 84.

P. lessaria Pears. B. and McD. Lichti. Laguna. Fig. 85.

Pherne subpunctata Ht. Dyar. Metz. Claremont. Fig. 86.

Prausta mustelinalis Pack. B.and McD. Lichti. Laguna.

Racheospila glaucomarginaria Barnes Ms. Lichti. Laguna.

Fig. 87.

130 Journal of Entomology and Zoology

Sabulodea nudilata Pack. Dyar. Metz. Claremont. Fig. 88.

Sciagraphia excurrata Pack. B. and McD. Lichti. Laguna.
Fie. 89,

S. californiaria Pack. B. and McD. Lichti. Laguna. Fig. 90.

Stammodes cenonymphata WHulst. Dyar. Lichti. Laguna.
Figo 9 L

Selidosema geminata Hulst. Ms. Dyar. Metz. Claremont.
Fioae9/2:

Neoterpes edwardsata Pack. Metz. Claremont. Fig. 93.

Stenaspilates apapinaria Dyar. Claremont. Fig. 94.

Zenophleps lignicolorata Pack. Claremont. Fig. 95.

Colymbia serrulata Pack. B.and McD. Lichti. Laguna.

Ceratodalia excurrata Grt. B.and McD. Lichti. Laguna.

Merochlora faseolaria Gue. B. and McD. Lichti. Laguna.

Tornos fieldi Gross. B. and McD. Licht. Laguna.

Sabulodes caberata Given. Dyar. Lichti. Laguna.

S. nudilata Dyor (?) Licht. Laguna.

Macaria dieldi Swett. Licnti. Laguna.

FAMILY -PYRALIDA®

Yuma trabalis Grote. B.and McD. Lichti. Laguna. Fig. 96.

Dicymolomia metalliferales Pack. B. and McD. Lichti. La-
ounas. =F ios].

Glaphyria reluctalis Hulst. B.and McD. Lichti. Lagun. Fig.
98.

Hulstia undulatella Clem. B.and McD. Lichti. Laguna. Fig.
Oo

Homewosoma mucidellum Ray. (Probably.) B. and McD.
bicht: Lagunas) Pig v00:

Pyralis farinalis L. B.and McD. Licht. Laguna. Fig. 101.

Lipocosma (2?) albubamus Br. B. and McD. Lichti. Laguna.
igen:

Sarata umbrella Dyor. B. and McD. Lichti. Laguna. — Fig.
103.

Nomophila nocluella D. and S. B. and McD. Lichti. Laguna.
Fig. 104.

2)

Pomona College, Claremont, California 131

Ommatopteryx ocellea Haw. B. and McD. Lichti. Laguna.
Fig. 105.
Ephestiodes nigrella Alst. B. and McD. Lichti. Laguna.
Diatre prosenes Dyar. B. and McD. Lichti. Laguna.
Pyrausta xanthocrypta Dyar. B.and McD. Lichti. Laguna.
Glaphyria reluctalis Hulst. B. and McD. Lichti. Laguna.
Lipographis fenestrella Pack. B. and McD. Lichti. Lagun.
Phlyctenia profundalis Pack. B.and McD. Lichti. Lagun.
Sarata umbrella Dyar. B. and McD. Lichti. Laguna.

LORTRICIDA:
Tortrix peritana Clem. Bus. Lichti Laguna.

i”. cirana Fer. “Band McD. Lichti? Laguna. Fig.i106.
Eucosma sp. Lichti. Laguna.

TINEID
Acrolophus flavicornis Bus. Busch. Lichti. Laguna.
GEEECHIMIDAE

Gelechia sp. Recurvaria sp. Bus. Lichti. Laguna.

Phthorimea operculata Zeller. Busck. Lichti. Laguna.

BEACHIST IDAa

Morpha sp. B. Lichti. Laguna.

YPONOMEUTIDZ

Plutella maculipennis Curt. Busck. Lichti. Laguna.

List of somewhat doubtful or imperfect determinations. All
collected at Laguna Beach by P. A. Lichti:

Eois demissaria Aub., Fig. 107. Tardehedia caudifacta Hbn.,
Fig. 108. Pleonectiptera subflavidalis Grote, Fig. 109. Givia
marga B. and McD., Fig. 110. Samecodes subcostalis Hmp., Fig.
[11. Eusoa sptentriconalis Wik., Fig. 112. Lycophora marginata
Hw., Fig. 113. Hemella infedelis Dyar, Fig. 114. Cannrgia ad-
versa Grt. Tarache coquilleiti J. B. S. Eublemma minina
Gro. Pyramata xanthocrypta Dyar (?). Cirphis farcta Smith.
Eriophyga inorta Smith. Dpantesis autholea Bdv. Proximes min-
dara B. and McD. Valdinia mirabilicornella Dyar.

(Contribution from the Zoological Laboratory of Pomona College)

ae

vies Hoa

_
-

1917 Pomona College Journal of Entomology and Zoology, Vol. 1X, No. 4, December

Suggestions From the Study of the
Central Nervous Systems of
Invertabrates

WIILIAM A. HILTON

For the last few years I have been studying the central nervous
systems of a large number of simple animals with a number of
objects in view. I wish to learn as much as possible about the
mechanism of the nervous system, not alone for individual and sim-
ple forms, but in general as applied to all groups. The problems of
how and where impulses are carried have been among the most
interesting. [he structures which serve, connect and correlate
senses, movements and activities have to me been more interesting
than the activities themselves. What all nerve cells with their
processes have in common and what differences there are between
them have been constantly in mind. “Phe functions of various parts
of the neurones and the relations that cells bear to each other are
important considerations. How far the relationships of species
and groups are carried into the structure of the ganglia and how
far adapatations have had their influence are questions not easily
answered. With invertebrates as with vertebrates the problems
of functional divisions of the nervous system are subjects for inves-
tigation. Then there have been the correlations of behavior with
structure, not alone in the adult, but also at various stages of
development.

Perhaps the dominant thought which has been in mind so far
as anatomical studies go, is the question of relationship of cells to
each other, of fibers and fibils to each other and to cells. Are
neurones related to neurones in continuous and definite chains, such
as are clearly indicated by many Golgi, Methylen Blue and other
methods, or are the well known suggestions and conclusions of
Apathy that fibrils pass from cell to cell the correct interpretations ?
It seems that this is a problem of great importance which has not
as yet reached a satisfactory solution. Different methods give
different results.

142 Journal of Entomology and Zoology

The work already done leading towards a comprehension of
these problems, if not their solution, has been with many groups of
animals, including a few vertebrates. My papers dealing with one
or another phase of the nervous system of invertebrates have been
published in a number of places. Much unpublished work includes
other material, but only a beginning has been made with the inves-
tigations which will be necessary for an advanced step in this direc-
tion. Some of the work so far, is necessarily of a fragmentary
nature and much of the gross anatomy particularly, merely confirms
the labors of many in the past. Part of the reason for studying
so many forms is to extend my own knowledge so that I may have
first-hand experience with all types. Part of the reason for special
study here and there is to clear up doubtful points or is directed
towards some particular problems in which an animal or group of
animals seems to offer special advantages in the way of suggestion
or solution. Hardly a form considered in any way but that brings
out some important fact, some previously unpublished suggestion.
Each separate investigation then may contribute a small part in
itself, but each study is directed toward the larger end of attempt-
ing to solve some of the most intricate and difhcult problems of
Biology. More than one line of investigation is being followed,
but necessarily the groundwork of future activity must be laid upon
anatomical and developmental studies. Other methods are used
or are to be used as necessity dictates and such as naturally develop
in connection with the attack upon the central problems.

Some of the specific questions which have been in mind from the
start are as follows:

1. What is the relation which exists between cell and cell in
the central nervous system? Do cells merely run in contact,
or is there an organic connection between them, or are both
things true?

2. What part does the nucleus play (a) in conduction and (b)
in general metabolism of the cells?

3. How are the fibrils related (a) within cells and (b) outside
of cells?

4. What is the fibrilar structure of (a) the cell-body and (b)
of the material between cells?

Pomona College, Claremont, California 143

5. How are cells related to each other (a) by neurites and
dendrites or fibers, and (b) by fibrils?

6. How and where is the impulse carried? How are the non-
medullated fibers able to carry a definite stimulus or impulse if
they are not insulated ?

7. Do nerve cells act in groups, each for a special purpose, or
is their effect a massed one, somewhat diffuse and related to other
systems? Do impulses pass along definite or difuse pathways?

8. Does the size of the animal make a difference in the com-
plexity of the nervous system, and is this complexity or lack of it
shown in the nervous system as a whole, or in the individual cells
which compose it? Do large animals have more nerve cells than
small ones? Do large animals have larger nerve cells than the
small creatures?

9. Are the conditions in the central nervous systems of inver-
tebrates comparable with those of vertebrates ?

10. Are the resmblances which Patton and others have seen in
Limulus and other invertebrates to vertebrate structures more than
chance resemblances, due to special adaptations, or modifications
of the nervous system ?

11. [sit possible to determine from the brain of an invertebrate
the degree of intelligence or instinct from a study of the structure ?

12. Is there any higher center in an invertebrate central ner-
vous system or in certain invertebrates which shows something of
a directive power in the life of the organism?

13. What are the functional divisions of the nervous systems
of invertebrates ?

14. Are there advantages in the study of the nervous systems
of invertebrates over the study of the brain and ganglia of more
complex forms ?

15. What are the animals whose nervous systems are adapted
for further study of various problems ?

Some suggestions in the way of my present opinion in respect to
certain of these questions are as follows:

1. In some cases it may be that simple contact is the only way
cells are related, but from the study of many forms I believe that
more intimate relations between cells by means of fibrillae are often

144 Journal of Entomology and Zoology

established. The fibrillae from one cell, in many cases, actually
mingle with the fibrillae within another cell. Non-medullated
fibers, it seems to me, probably afford means of transmission through
the sides of the fibers, as well as at the ends, although in many
cases the ends may be better adapted for the purpose. It may be
that the branchings at the ends of the processes of nerve cells are
for the purpose of furnishing a number of contacts which are better
than the sides of the fiber.

2. I believe the structure of the nucleus, together with what we
know of nuclear composition and structure in general, precludes it
from any decided part in conduction. It seems merely a metabolic
center of less importance in mature nerve cells, as evidenced by
its loss of nuclear material.

3. I believe fibrils are related both within and without cells in
a similar manner. That is, they run near, touch or cross to allow
the passage of impulses, but do not necessarily fuse.

4. The chief fibrillar material of cell bodies and of areas
between cells, I believe, is about the same and is neuro-fibrillar or
conductive. A small portion of the cell-body is merely supportive
and neuroglia or other cells in the general fibrous mass of a ganglion
furnish varying amounts of supportive material between cells.

5. Cells are related to each other grossly very often by neurites
and dentrites, but in many, if not all cases, fibrils, either in these and
formed from them, or free fibrils, relate cells, not so much as indi-
viduals as in groups.

6. The impulse is carried in the fibrils. ‘The stimulus in non-
medullated fibers is not so clearly separated as in medullated. There
must be some latteral escape to other cells in ways as yet not under-
stood. Some insulation and definiteness in certain non-medullated
cells is accomplished by whole bundies for a single purpose pro-
tecting the central fibers from much lateral loss. Probably also
certain large clearly separated fibers because of their positions are
protected from lateral loss.

7. I believe nerve cells do not act as individuals; their effect is
a massed one. Many cells supplying a region or a function act in
such a way that certain cells or even areas might be lost out entirely
and yet the impulse be carried.

Pomona College, Claremont, California 145

8 As arule the size of the animal makes for a more complex
nervous system. Large animals have more and larger cells than
related small ones. In the same species embryonic nerve cells may
be much smaller than those of the adult, and the proportionate
number of cells is greater in certain embryonic stages.

9. Vertebrates and invertebrates are similar as to function of
the central nervous system, but the centers are as different as are
the peripheral parts.

10. The resemblances which have been found in certain arachnid
and arachnid-like forms to the structures of vertebrate brains, it
seems to me, are but chance resemblances, analogous, but not
homologus, structures. In certain annelids the olfactory portion ot
the brain is enormously developed for a special adaptation in a
limited group of worms. ‘This great olfactory area might be com-
pared to the olfactory portion of the fore-brain of vertebrates, but
I think it is clear that we have an analogy merely.

The comparisons of the nervous systems of nemertine worms
with those of vertebrates are interesting, but not necessarily sig-
nificant of relationships.

The segmental character of the radial nervous system of brittle
stars might be taken as an indication of relationship to segmented
animals with about as much justification.

11. The degree of development of intelligence and instinct, I
believe, may be judged to some degree by the relative size of those
parts of the brain which are not directly or intimately connected
with the sense organs, such as the posterior region of the brain in
many segmental animals, or the region of the mushroom bodies of
some arthropods and others.

12. If there is any higher psycical center in invertebrates, it
seems to me that it must be in the region not dominated by any one
center or sense and receiving fibers from all, a center well supplied
with nerve cells. Such a center may be the posterior portion of the
brain in certain segmented animals.

13. The functional divisions are not well known. In those
forms where I have traced the motor and sensory fibers they were
mingled in the same nerve trunks in lower regions. The suggestions
of some that sensory areas in insects’ ventral ganglia are ventral,

146 Journal of Entomology and Zoology

is not altogether borne out by the facts. But I believe that the
primary condition of a nervous system was superficial and sensory,
as development seems to show and as the study of echinoderms
seems to indicate.

In the brain some functional divisions are easy to make out in
segmental animals, because certain pure sensory nerves are more
easily traced.

14. I believe there are certain advantages in the study of simple
types of nervous systems.

15. Almost every form so far examined is worthy of re-exam-
ination in connection with the solution of general problems.

(Contribution from the Zoological Laboratory of Pomona College)

. THE NERVOUS SYSTEM OF THYSANURA.

WILLIAM A. HILTON.
(Department of Zoology, Pomona College, Claremont, California).

The central ganglia of representative genera, Campodea,
Evalljapax, Lepisma and Machilis were examined.

The first important papers dealing with any of these genera
were those of Grassi 1885 and 1888. In both of these, brief
discussions of the nervous system are given, but no clear picture
of the complete nervous system. Probably the most copied
figure of the nervous system of any thysanuran is the one of
Oudemans, 1887. In this, a drawing of the complete nervous
system of Machilis is given which could hardly be improved
upon, but the position of the optic lobes, brain and other
cephalic parts are not shown in the relations we find them
within the body of the animal. In this figure there is a rep-
resentation of the fine medial nerve. Another paper by Grassi
in 1888 shows the general form of the nervous. system of
Campodea and Japax and a number of details are clearly given.
Bottger, 1910, on Lepisma saccharina L. gives a very complete
account of the brain and shows it to be very nearly as complex
as that of other insects.

Campodea undoubtedly has the most primitive, or at least,
the simplest nervous system of any of these insects. The brain
is provided with antennal nerves well towards the forward end.
The first ventral ganglion is nearly under the brain, then there
follow three large thoracic ganglia and seven small abdominal
ganglia with the last one a little larger than the rest. This
corresponds to Grassi’s figure, but this one gives greater detail.
It was drawn from gross dissection. No frontal ganglion is
shown as one was not clearly recognized in section or dissection.
(Figure 1).

Japax or Evalljapax in this case, differs quite a little from
Campodea in appearance, the brain is of different shape, and
as it is also without eyes, the forward antennal nerves are the
most marked. The ventral ganglia are a little more oval,
branches are more prominent and there is one more abdominal
ganglion. The last abdominal as in Campodea, is a little larger

303

304

Annals Entomological Society of America [Vol. X,

than the rest. The drawing is from a fresh, completely
removed central nervous system. (Figure 2).

Fig.
Fig.
Fig.
Fig.

Po to

fe A

? By
uae

Neng

sy 4
ate 1%

“4

Central nervous system of Campodea from above. X 10.
Central nervous system of Evalljapax from above. X 10.
Central nervous system of Machilis from above. X 10.
Central nervous system of Lepisma from above. X 10.

Machilis has a more complicated brain, partly because of the
eye connections; it also has a general transverse direction, as

1917] The Nervous System of Thysanura 305

shown in the figure and has quite a little depth. The frontal
ganglion is not shown in the figure. The first ventral ganglion
is large, so are the three thoracic ganglia. There are eight
abdominal ganglia differing somewhat in size and somewhat
from Oudemans figure. The median ventral nerve was found
much as figured by Oudemans. Perhaps the most marked
feature was in the backward extension of the optic lobe region
because of the position of the eyes. The figure does not agree
with Oudemans, largely because the brain is shown in its
natural position as it is found in the head. (Figure 3).

Lepisma resembles Machilis very closely, but because of the
more lateral and cephalic eyes the brain is more transverse
when viewed from above. The frontal ganglion is shown in
the figure. (Figure 4).

TRACHEAL DISTRIBUTION.

Trachea can be best studied by removing the ganglia and
mounting while still fresh in glycerine. The air in the tracheal
tubes remains for a few minutes and the distribution of the
trachea may be seen. I found the tracheal distribution much as
in the larva of another species. In general, the brain seems
supplied by three main trachea on each side. The subesophageal
ganglion by two main branches on each side, each ventral
ganglion below this with one on each side, but the last ganglion
with two branches at least, one of which often has some associa-
tion with the branch of the next to the last ventral ganglion.
Two branches seems to be the usual number for the last ganglion.
(Figure 7-16).

It was very difficult to study trachea in the small Campodea
because it was hard to remove the ganglia in the first place, and
second because the trachea remained visible only for a short
time. The lower smaller ganglia were each supplied with a
single pair of branches, but the supply to the larger cephalic
ganglia seemed to be by two sets of main lateral trachea from
above and below, each set giving off branches as shown in the
figure. The abdominal ganglia are supplied more simply.
In none of the centers was there the branching of the tracheoles
to the degree found in Evalljapax.

Brain of Campodea from above. X 75.

Fig. 5.
Fig. 6. Thoracic ganglion of Campodea from above. X 75.
Fig. 7. Region of last two thoracic ganglia above and some of the abdominal

ganglia in the lower part of the figure, from Campodea, showing the
lateral tracheal tubes. X 75.

Fig. 8. One of the abdominal ganglia of Campodea showing tracheal tubes. X 75.

Fig. 9. One of the thoracic ganglia of Campodea showing tracheal tubes. X 75.

Fig. 10. Tracheal distribution in the subesophageal and first thoracic ganglion
of Evalljapax. x 50.

Fig. 11. Tracheal distribution in the last two ganglia of Evalljapax. x 50.

Fig. 12. Brain of Lepisma showing where the deeper masses of cells are as seen
from a methylene-blue preparation. X 20.

Bice loss Pant the brain of Lepisma from below showing areas of most abundant
cells: 20.

Fig. 14. Subesophageal ganglion of Lepisma showing distribution of trachea.

Fig. 15. Third thoracic and first abdominal ganglia of Lepisma showing tracheal
distribution. x 20.

Fig. 16. Last two abdominal ganglia of Lepisma with tracheal distribution. X 20.

Figs. 17 and 18. Abdominal ganglia of Machilis, showing medial nerve. X 22.

Fig. 19. Brain of Evalljapax from above showing distribution of thickest masses
of cells on the left side and the distribution of tracheal vessels on the
right side. X 50.

Figs. 20 and 21. Supra- and subesophageal ganglia of evalljapax as shown in
longitudinal section. X 50.

~J

1917] The Nervous System of Thysanura 30

GENERAL CHARACTER OF THE BRAIN.

One of the chief differences between the brains of Campodea
and Evalljapax as compared with Lepisma and Machilis is due
to the lack of eyes in the first two. There are numerous differ-
ences between the brains of the first two genera. The shape
of the brain of Campodea is given as it appears when viewed
from above in Figure 5. Longitudinal and cross sections
through the brain show the ventral parts largely without cells.
(Figures 23-26). |

The cephalic and mid-dorsal regions are not so well supplied
as the lateral dorsal and caudal regions; the caudal lateral region
of the brain has the largest mass of cells. Many fibers run
from the brain, from or to, forward, median or lateral parts
down -the connectives to the subesophageal ganglion and
farther. There are also numerous small bundles which connect
all parts. In the latero-caudal region there are central masses of
denser fibers. Three well-marked masses at least may be
seen on each side near the dorso-lateral region, Fig. 28. These
may represent the areas which in other species help farm the
mushroom bodies. The brain of Evalljapax % je grom
above in Fig. 19. On the right side is showi #& agetien of
the tracheal tubes of that side and on the other the position of
the larger cell areas as shown in the methylene blue preparation.
The shape of the ganglion is quite different from that of Cam-
podea, as the drawing indicates. There are cells on the dorsal
side of the brain, but they are few compared to the other
great areas indicated in the drawing. In section the brain
seemed simpler in structure than that of Campodea, but
this in part may have been the fault of the preparation. As in
Campodea, the ventral regions of the brain are without cells.
No clear indication of mushroom bodies was seen, and the
connections between different parts of the brain and the con-
nectives and subesophageal ganglion seemed less marked.

Machilis and Lepisma also differ from each other to a marked
degree in brain structure and arrangement. The general
distribution of cells above and below is shown in two figures,
-12 and 13, which were stained in methylen blue. In an adult
there seem to be not as many cells in proportion to the general
area of fibers as in some of the other genera. The middle line
both above and below is largely without cells as shown in Fig. 32,

Fig. 22.

Fig. 27.
Fig. 28.
Fig. 29.
Fig. 30.

Cross section through the first thoracic ganglion of Evalljapax. X 50.
Figs. 23 and 24. Longitudinal sections through the brain and ventral ganglion of
Campodea. The cephalic end is to the right and. the -rain is above.
150:

Figs. 25 and 26. Cross sections through the brain and first ventral ganglion of

Campodea taken at different levels. X 150.
Longitudinal section through the first thoracic ganglion of Campodea,
the dorsal side is above, the cephalic end at the left. > 150.
Longitudinal section through the second thoracic ganglion of Campodea,
the dorsal side isup. x 150.

Longitudinal section through the brain of Machilis. Only one-half is
shown. The optic lobe region is at the top of the figure. x 150.
Longitudinal section through the brain. and two ventral ganglia of

Machilis. X 150.

1917] The Nervous System of Thysanura 309

which is nearly a cross-section through the brain of an adult.
In this a much more complicated structure of fibers and fibrils
is presented than in any of the others so far compared. The
stalks and roots of the mushroom-bodies are shown in Fig. 32,
also’ the so-called central body. The arrangement of the
fibrillar material of the mushroom seems to have a different
arrangement and development than in Lepisma saccharina
studied by Bottger, 1910. In his descriptions and figures
an anterior and posterior division of the cap of the fibrous
material or ‘‘Traube,”’ is given but in the species studied at
this time the “Traube’’ has a different position and is not
clearly made up of more than one main lobe on each side.
Each of these main lobes as shown in the figure has five secondary
lobes instead of four shown by Bottger. In the region of these
masses of fibrous material of the mushroom-bodies there are a
number of irregular fibrous bundles which may represent other
parts of this structure. On the whole, there is a fairly close
resemblance to the brains studied by Bottger and differences
may be due to the fact that this is not the species which he
studied, but our most common local species whose exact identity
has not yet been reported to me by special students of this
group.

One-of-the first differences between the brains of Machilis
and Lepisma is shown because of the different position of the
eyes. The eyes of Machilis are connected with the caudal
end and this dorso-caudal region forces the parts of the brain
usually found here, farther forward. This is not an unusual
condition among the brains of invertebrate animals, in some
amphipod Crustaca as compared with nearly related isopods
there is a similar shifting. In general, the posterior lobe region
of the brain of segmented animals seems to represent its highest
center, but shiftings such as just mentioned may often change
the usual arrangements.

The second marked difference between Machilis and Lepisma
at least in all specimens studied, both small and large, was in the

Fig. 31. Longitudinal section through the edge of the brain of Machilis, the
section is through the eye above and to the right. The cephalic end
is towards the left. x 150.

Fig. 32.- Cross section through the brain of Lepisma, only the right half is
shown. X 150:

Figs. 33 and 34. Cross sections through two levels of the first thoracic ganglion
of Lepisma. The dorsal side is up. & 150.

310 Annals Entomological Society of America [Wolke ax,

way of a complete lack of anything which might strictly be
called mushroom-bodies in Machilis. There are however groups
of fibers in the proper region of the brain in specimens of all
sizes, but these are hardly more marked than in Campodea.

The usual distribution of cells was found in this genus. Some

indication of the complex but usual arrangement of fibers
in the optic lobe region is shown in the Figures. Association,
projection and commissural. fibers are easily demonstrated.
(Figs. 29-31).

In all the brains examined, cells of the usual and well-known

types for insect brains were clearly seen. Especially was this.

the case with the representatives of Lepisma and Machilis.
In these also there were more differences between cells. In all,
nerve cells were held in place and otherwise supported by
neuroglia cells and neuroglia nets. In all, the fibrils within
the central portions of the ganglia formed intricate tangles
with the possibility of almost unlimited connections between
parts. In the smaller and simpler species few well separated
definite tracts were found, fewer than in Lepisma and Machilis.
This is in part due to the fact that the cells, fibers and fibrils
are not so large, but there may be other reasons.

The ventral ganglia in the different species differ greatly
in complexity. They seem to be the simplest in Campodea and
the most complex in Lepisma. In all, the more abundant cells
as is usual, are ventrally placed and the dorsal cells are usually
limited to the sides and to a small group in the mid-dorsal line.

If we consider the brain from its three main pairs of nerves
or three main regions on-each side to consist of three lateral
segments, then we must consider the subesophageal ganglion
from its nerves and lobings to consist of at least two segments
and very possibly more. The first thoracic ganglion in Machilis
and Campodea are evidently composed of two segments as
shown in the figures. The cell arrangement and fibrous bands
were found to be most complex in Lepisma. A few figures
are shown of ventral ganglia of several of the species (Figs.
22, 27, 28, 33 and 34) and a more detailed exaniination of
the first thoracic ganglion of Lepisma, is given below.

Beginning at the cephalic end we find the two masses of the
connectives distinct for a short distance, then cells are located
ventrally and laterally, being thickest on the mid-ventral line.

1917] The Nervous System of Thysanura old

The cells are from one to three layers thick. The fibers in
the middle line gradually form into a thick mass of com-
missural strands. There are also a number of diagonal fibers
shown in the plane of the cross section. Farther down a second
commissure makes its appearance as a narrow area crossed by
coarse fibers. This crosses the center of the ganglion. Farther
along a marked, much arched commissure occupies a short
distance. The second commissure mentioned is quite extensive
but not very thick. More dorsal arched fibers show farther
along, these cross to some degree and come from lateral ventral
cells, in part at least. In about the central part of the ganglion
the other commissures and arched fibers have about disappeared
and two small central masses of commissural fibers are evident
and two ventral bundles of longitudinal fibers and marked
crossings from the ventral to the dorsal side are seen. Farther
along the two median commissures give place to one median
arched commissure, while many branches are seen at various
angles. This arched band disappears and another one comes
in contributed to by marked masses of lateral cells. A few
dorsal cells send their fibers straight into the ganglion from
above. Farther down a more dorsal arched commissure
comes in. Later there are two ventral straight bands of fibers
and then a single median band reaching from side to side, then
very soon the ganglion divides into the two ventral connectives.
Cells on the ventral and lateral sides are seen at all levels.
A few dorsal cells are seen near the central regions of the
ganglion.

In the second thoracic ganglion a similar condition was
noted, at least nine commissures were counted.

ABDOMINAL GANGLIA.

A general summary of the structure of abdominal ganglia
of Lepisma will give an idea of their complexity:

1. Cells chiefly ventral are found in from one to two layers.
The lateral ventral groups have three cell layers. There are a
few mid-dorsal cells of various sizes.

2. There are in each ganglion a large number of com-
missures, both straight and arched, ventral and dorsal.

3. Fibers cross dorso-ventrally and caudally.

4. Fibers run short distances to nearby cell groups.

312 Annals Entomological Soctety of America [Vol. X,

5. Cells of various sizes send fibers into the mass of the
ganglion.

6. The longitudinal fibers to the connectives may be found
in every part, but they are not always evident because of the
many fine fibrils from various regions all woven in with them.

SOME GENERAL CONCLUSIONS.

The nervous systems of the four genera studied show some
similarities but many differences. The general position and
number of the ganglia is quite similar. Campodea, the least
specialized in most respects, has one less ventral ganglion. The
general shape of the four brains are quite different, even those
without eyes are not alike and those with eyes have them so
differently connected with the brain that the whole arrange-
ment of the nervous system at this point is altered. Nerve
cells differed chiefly in size and minor arrangements. The
largest animals had the largest nerve cells. The general course
of fibers and fibrils could be traced but special tracts were not
traced very far. The general areas of mushroom bodies were
determined for all. Only in Lepisma were these structures
well developed, in Machilis and to a less degree in Campodea
condensations of fibrils were taken to indicate them.

The general distribution of tracheal vessels is as follows:
The brain has three main branches on each side, the sub-
esophageal ganglion two branches from each side, the thoracic
and abdominal ganglia as a rule have one branch each on a
side and’ the last abdominal ganglion has usually two branches
on each side. The brain of Campodea was not easily removed,
so that the condition there was not so clearly made out, but
the appearance so far as could be told was as stated for the rest.
The thoracic and abdominal ganglia, however, have a distribu-
tion which is not like the rest. Possibly the long lateral trachea
on either side with its branches to the ganglia may represent
a more primitive if not an absolutely different condition. For
this and other reasons I am inclined to think of Campodea
separated from the other genera by a wide gulf. Japax seems
separated from the rest by the next widest gulf.

The segregation of fibrils in clumps means a closer union
in some places than others; this probably means: 1. Fibrils
are closely massed that go in the same direction. 2. In some

1917} The Nervous System of Thysanura 313

places groups are closely correlated because of this relation to
each other.

Nuclei are distinct from the fibers and fibrils; they are
nutritive centers. The cell bodies also are important in
metabolism, but they are not important enough centers for the
mingling of many fibers. The individual fibers from cells are
less important in the relationship of parts than the groups and
masses of fibers and fibrils from many cells in conveying
impulses. Association of fibrils seems more important outside
of cells thaninthem. Why should not lateral as well as terminal
contacts be important in conveying impulses? The fibrils are
carried out in fibers, but the fibrils break away and are dis-
tributed in complex ways. It seems that an impulse may flow
through ganglia like floods of water through a swamp. The
impulses follow the lines of least resistance, if the bundle is
large the direction is more definite, if small, of less importance.
The nervous system of invertebrates might be compared to the
heart and circulation of insects; it, like the heart, receives and
passes on, but the distribution is not definite until there is a
more perfect insulation. Insulation may be accomplished
in several ways: (1) Bundles of -fibers protect the central
strands with a similar destination from loss to the surrounding
parts; (2) The fibers in some cases remain distinct from each
other, or the fibers are large and the inner fibrils are protected;
(3) Neuroglia cells and neuroglia nets may help a little; (4) In
vertebrates the more perfect insulation by means of myalin
seems the most efficient protection.

SPECIAL REFERENCES.

Bortcer, O. 1910. Das Gehirn eines niederen Insektes (Lepisma saccharina L.)
Jen. Zeit. f. Naturw. Bd. XLVI.

GrassI, B. 1885. I progenitori degli Insetti e Miriapodi. L’Japax e la Campodea.
Dagli Atti dell’ Accadema Gioenia di Scienze Naturali in Catania. Ser. 3,
Voll XExXe

1885. Contribuzione allo studio dell Anatomia del genere Machilis.
Lett. all ac. nella tornata. Mem. IIT.
. 1888. Anatomia comparata dei Thisanuri. Memoria VII. Reals ac. dei
lincei. Roma.

OupDEMANS, J. T. 1887. Bijdrage tot de kennis der Thysanura en Collembola.

Amsterdam.

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1918 Pomona College Journal of Entomology and Zoology, Vol. X, No. 2, June

Early Specimens of Hymenoptera from
the Claremont-Laguna Region

Compiled by Charlotte Johnson and Ruth Ledig. Not all families or all in every
family are included in this list. Only the first specimens collected are listed.
Recent collections are not included and the determinations given in the collection
alone are given.

BRACONID 4£

Spathiinae spathiini ——. ——. Baker. Mountains near Claremont, Cal.
Chelonine cryptogastonia ——. Baker. Claremont, Cal.
Chelonine chelonus —. Baker. Mountains near Claremont, Cal.
Cardiochiline toxonenron ——. Baker. Claremont, Cal.
Agathidine agathine ——. Baker. Claremont, Cal.

Blacine colyptini Baker. Mountains near Claremont, Cal.

A phidiine diaretus, californicus N. sp. Baker. Claremont, Cal.

A phidiine lysiphlebus citraphis Rehn. Claremont, Cal.
Aphidiine lysiphlebus abutilaphidis Rehn. ——. ——. Claremont, Cal.

ICHNEUMONID

Ophionine campoplegini B. B. Baker. Claremont, Cal.
O. paniscus B. B. Baker. Mountains near Claremont, Cal.
O. plectiscini B. B. Baker. Mountains near Claremont, Cal.
O. cremastini B. B. Baker. Mountains near Claremont, Cal.
O. ophionini testaceus Baker-n.sp. Baker. Claremont, Cal.
O. ophionini ferruginosus Baker-n.sp. Baker. Claremont, Cal.
O. ophionini fuscus Baker-n.sp. Baker. Claremont, Cal.
O. enicospilus nigrecinctus n.sp. Baker. Claremont, Cal.
O. campoplegini zachresta Baker. Claremont, Cal.

Tryphonine bassini ertborus {?] triannulatus Cam. Cam. Baker. Mountains near
Claremont, Cal.
T. bassus nemoralis Gr. 798. Baker. Mountains near Claremont, Cal.
Pimpline watapimpla Baker. Claremont, Cal.
P. glypta Baker. Claremont, Cal.
P. pimplipterus Baker. Mountains near Claremont, Cal.
P. ephialles Baker. Mountains near Claremont, Cal.
Cryptine campsocryptus brevicornis Cam. n.sp. Baker. Claremont, Cal.
C. otacustes nigro-ornatus Cam. Cam. Baker. Mountains near Claremont, Cal.
C. stibiscapus, crythrostomus Cam. Cam. Baker. Mountains near Claremont, Cal.

MUTILLIDZ

Baker. Claremont, Cal.
Baker. Claremont, Cal.
Baker. Claremont, Cal.
Baker. Claremont, Cal.

Mutilla [Dasymutilla] orcus Cr.
Dasymutilla fulvihirta Cr.
Mutilla |Dasymutilla] orcus Cr.
Dasymutilla pacifica Cr.

Photopsis suthophore Aslm. ——-. Baker. Claremont, Cal.
MASARIDE

Pseudomasaria edwardsii Cr. ——. Baker. Claremont, Cal.

Pseudomasaria vespoides Cr. ——. Baker. Claremont, Cal.

Euparagia scutellaris Cross. Bradley. Baker. Claremont, Cal.
OXYBELID 42

Notoglossa emarginata Say. ——. Baker. Mountains near Claremont, Cal. Pine
Lake, Cal.
Belomicrus cladothricis C.K.1.1. ——. Baker. Claremont, Cal.
Belomicrus cookii Baker, n.s.p. ——. Baker. Claremont, Cal.
CRABONID =
Blephacipus —. Baker. Mountains near Claremont, Cal.

Xylocrabro —. Baker. Mountains near Claremont, Cal.

24 Journal of Entomology and Zoology

PEMPHREDONID£

——. Baker. Mountains near Claremont.
Baker. Claremont, Cal.
Baker. Claremont, Cal.

LADTRIDZE

Tachysphex ——. ——. Baker. Claremont, Cal.
Tachytes —. Baker. Claremont, Cal.

PHILANTHID®

Cerceria Baker. Claremont, Cal.

Cercerts ferruginior V. & C. Ph. Coll. Baker. Claremont, Cal.
Cerceris near Novomexicana V. & C. Baker. Claremont, Cal
Philanthus crabroniformis ——. ——. Baker. Claremont, Cal.
Philanthus near Crabroniformis Baker. Claremont, Cal.
Philanthus Baker. Mountains near Claremont, Cal.
Philanthus cleome Dunn. Vier. Baker. Claremont, Cal.

NYSSIONID4E
Baker. Claremont, Cal.
Astata coerulea Cr. Baker. Claremont, Cal.
Astata bicolor Say. . Johnson. Pine Lake, Cal.
Hoplisordes spilopterus Hol. Uh.Coll. Baker. Claremont, Cal.
Hophisoides umbonatus Baker. Baker. Claremont, Cal.

Spilomena
Stigmus
Neofoxia suffusa Fox.

A stata

Harpactus : . Baker. Claremont, Cal.
TRYPOXYLID
Trypoxylon —. Baker. Claremont, Cal.
SPHECID/

Ammophila near Collaris ——. Baker. Claremont, Cal.

Ammophila near procera Baker. Claremont, Cal.

Ammophila pruivosa Cress. Fernald. Baker. Claremont, Cal.

Pelopeus servillei Lep. Fernald. Baker. Claremont, Cal.

Chalybion Baker. Claremont, Cal.

Psammophila luctuosa Sm. Fernald. Baker. Claremont, Cal.

Psammophila Baker. Mountains near Claremont, Cal.
Psammophila near vedlacei pennis Lep. Baker. Mountains near Claremont, Cal.
Ammophila vulgaris Cr. Baker. Mountains near Claremont, Cal.

Ammo phila near centralis Baker. Mountains near Claremont, Cal.
Ammophila extremitata Cr. Baker. Mountains near Claremont, Cal.

VESPIDE
Polistes aurifer Sauss. Var. Baker. Mountains near Claremont, Cal.
Vespa occidentalis Cr. Baker. Catalina Island.
EUMIENID
Eumenes crucifera Prov. Astr. Baker. Mountains near Claremont, Cal.
FORMICID £
Camponotus-hyattiti Var. Baker. N. Var. Wh. Baker. Catalina Island, Cal.
Camponotus maculatus Subsp. vicinus. Var. nitidiventris Em. Baker. Catalina
Island, Cal.
Camponotus maculatus vicinus Var. nitidiventris Em. Wh. Baker. Catalina Island,
Gall:
Formica rufa L. Wh. Baker. Mountains near Claremont, Cal.
Formica rufiventris Em. Wh. Baker. Mountains near Claremont, Cal.
Formica pilicornis Em. Wh. Baker. Mountains near Claremont, Cal.
Formica sp. Wh. Baker. Mountains near Claremont, Cal.
Cremastogaster lineolata Lay Subsp. coarclata Emery. Baker. Catalina Island,
Cal.
Solenopsis geminata Fab. Wh. Baker. Claremont, Cal.
Solenopsis heminata Fab. Baker. Claremont, Cal.
DOLICHECHERID/E
Lapinoma sessile E. San. W. Mountains near Claremont.
Liometopuns microcephalum Var. occidentali Em. Wh. Baker. Claremont, Cal.

Pomona College, Claremont, California 25

MYRMICIDZ

Pogonomyrmex . Wh. Baker. Claremont, Cal.

Pogonomyrmex californicus Buek. Wh. Baker. Claremont, Cal.

Messor andrei Mayr. Baker. Claremont, Cal.

Stenamma (Messor) andrei Mayr. Wh. Baker. Claremont, Cal.
Pheidole hyattii Em. Baker. Claremont, Cal.

Ecition [probably E. californicum] Mayr. Wh. Baker. Claremont, Cal.

TENTHRIDINID

Schigocerus tristis Cr. Roh. Baker. Claremont, Cal:

Schyocerus collaris Roh. Roh. Baker. Claremont, Cal.

Poecilostoma kincaidii Maeq. Roh. Baker. Claremont, Cal.

Proctotaxonus typicus Roh. Baker. Mountains near Claremont, Cal.

Loderus niger Roh. Baker. Claremont, Cal.

Aphanius lenis Cotype Q Roh. Baker. Mountains near Claremont, Cal.

Claremontia typica Cotype @ Roh. Baker. Mountains near Claremont, Cal.

Perectiata subtruncata Dyar. Baker. Claremont, Gall

Periclista occidentalis Cotype 9 Roh. Baker. Claremont, Cal.

Periclista lercostoma Cotype ¢ Roh. Baker. Claremont, Cal.

Crytocampus bakeri Roh. Baker. Mountains near Claremont, Cal.

Crytocampus bakere Rob. Paratype Q Roh. Baker. Mountains near Clare-
mont, Cal.

Macrophyta truncata Roh. ——. Baker. Claremont, Cal.

Macrophya nigricornis Roh. Baker. Mountains near Claremont, Cal.

Macrophya pleuricinctella Roh. Baker. Claremont, Cal.

Macrophya multicincta Roh. Baker. Claremont, Cal.

PROCTOTRYPID
Xenotoma clarimontis Kieff . ——. Baker. Claremont, Cal.
Xenotoma parvicellula Kieff. ——. Baker. Claremont, Cal.
Xenotoma rufosignata Kieff. ——. Baker. Claremont, Cal.

Xenotoma melanocera Kieff. ——. Baker. Claremont, Gal:
Aclista microneura Kieff. ——. Baker. Claremont, Cal.

Xenotoma Laeta. Kieft. Baker. Claremont, Cal.

Proctotrupes nevadensis Kieff. Baker. Mountains near Claremont, Cal.

(BELYTINA)

Baker. Mountains near Claremont, Cal.
Baker. Mountains near Claremont, Cal.

Baker. Mountains near Claremont, Cal.
Baker. Mountains near Claremont, Cal.

Liptorhaptus longineris Kieft.
Belyta nigripes Kieft.

Pantoclis dubiosa Kieft.
Pantoclis californicus Kieft.

BETHY UNAE
Ephyris eriagoni Kieff. ——. Baker. Claremont, Gal
Epyris individus Kieff. ——. Baker. Mountains near Claremont, Cal.

Epyris clarimontis Kieft. Baker. Claremont, Cal.
Parasierola cellularis Var. punctaticeps Say. Kieff.
Claremont, Cal.

Baker. Mountains near

(DRYEICINZ)
Galesus clarimontis Kieff. ——. Baker. Mountains near Claremont, Galt
Diapria montana Kieff. ——. Baker. Mountains near Claremont, Cal.
FIGITID

Amblynotus Kieff. |
Figites coloradensis Asher.
Ganaspis reclusa Kieft.

Baker. Mountains near Claremont, Cal.
Baker. Claremont, Cal.
——. Mountains near Claremont.

CYNIPIDA
Synergus flavipes Kieft. Baker. Mountains near Claremont, Cal.
Andricus pomiformis Bass. ——. Baker. Mountains near Claremont, Cal.
Callirhytis eriophora Kieff. ——. Baker. Mountains near Claremont, Cal.
Callirhytis polythyra Kieff. ——. Baker. Claremont, Cal.
Callirhytes pacificus Asher. ——. Baker. Mountains near Claremont, Cal.

Callirhytis agrifolia Bass. ——. Baker. Claremont, Cal.

26 Journal of Entomology and Zoology

CHALCIDIDE

(EURYTOMID)
Eurytoma from galls of Calhirhytis maculipennis
Decatoma from galls of Calhirhytris maculipennis
Brasema ruficollis Gam. Baker. Claremont, Cal.
Eupehmus [2] Claremont, Cal.

———, Baker. Claremont, Cal!
—. Baker. Claremont, Cal.

TORY MID ©
TORYMIN

Torymus from galls of Callirhytis Baker. ——. Baker.
Cal:

Prospalltetla How. ——. Stahl. Claremont, Cal.

Aphycus florus How. Stahl. Claremont, Cal.

Aspidiotiphogus citrinus Craw. ——. Stahl. Claremont, Cal.

Diarthronomyia californica Esit. ——. Stahl. Claremont, Cal.

Mountains near Claremont,

1918 Pomona College Journal of Entomology and Zoology, Vol. X, No. 3, September

Coleoptera from the Claremont-
Laguna Region

Compiled from the Collections of Pomona College by Lea Myers.

All the local determined beetles are here listed as they are found in the Cook-Baker
collection. More recent specimens are not listed if they are the same as those in
the original collection.

HY DROPHILID

Tropisternus s.p. : Metz. Claremont, Cal., Portland, Oregon. Dark
brown with lighter brown border on wings and prothorax. Oval shaped.
10 mmx5%4 mm.

Tropisternus limbalis Lec. Fall. Laguna Beach, Cal. Dark brown with nar-
rower light brown border on wings and prothorax. Larch spur on each leg.
10 mmx 5% mm.
Tropisternus salsamentus Fall. Fall. ——. Laguna Beach, Cal. Very dark brown.
Oval shaped. 9mmx4% mm.
Tropisternus californicus Lec. Fall.
shaped. Antenne very short. 9mmx5mm.

Philhydrus californicus Horn. Laguna Beach, Cal. Shiny brown. Oval
shaped. Small thread-like antenne. 6 mmx 3 mm.

Cercyon fimbriatum Mann. Fall. Baker. Laguna Beach, Cal. Brown, Wing
covers ridged. Oval shaped. Antenne short. 3 mmx 2mm.

LAMPYRID£

Telephorus ingenuus Lec. Fall. Baker. Claremont, Cal., and mountains near. Dark
grey with tan prothorax and a black stripe running from eye to eye. Soft wing
covers, prominent eyes. Long antenne. 714 mmx 34mm.

Telephorus tibiellus Cemm. Baker. Claremont, Cal. Light brown with reddish
brown legs and prothorax and head. Eyes black. Soft wing covers and long
antenne. Rectangular shaped beetle. 1644 mmx4%mm.

Malthodes n. sp. Fall. Baker. Claremont, Cal. Grey with brown prothorax
and head. Long antenne, short wing covers. Small prothorax. 34%mmx1%4mm.

Laguna Beach, Cal. Black. Oval

LATHRIDIID£
Lathridius armatulas Fall. Fall. Baker. Claremont, Cal. Bronze colored. Narrow
prothorax and head with large abdomen. Short clubbed antenne. 2% mmx1mm.
LUCANID

Sinodendron rugosum Mann. Fall. Claremont, Cal. Dull black. Body slightly
rough. Head with turned-up hook on it. Prothroax divided into two parts, with
median dorsal line on second part. Also small projection on prothorax.
11% mmx 5mm.

MALACHID £

Collops marginecollis Lec. Fall. Baker. Laguna; Claremont, Cal. Blue with reddish
brown prothorax and legs. First two joints of antenne thick and triangular.
Prothorax covered with long hairs. 4mm x 3mm.

Collops marginellus. Lec. Fall. Baker. Claremont, Cal. Blue with black prothorax
and head. Short brown antenne. 4mmx 2% mm.

Collops argutus Fall. Fall. Baker. Mountains near Claremont, Cal. Brown with
black markings. Covered with short brown hairs. First two segments of antenne
large and peculiarly shaped. 414 mmx 2% mm.

Malachius acutipennis Fall. Fall. Baker. Claremont, Cal. Brown with orange pro-
thorax, and orange tips on wing covers. Antenne resemble sawteeth. Long legs.
5mm x 5%mm.

Malachius uniformis Fall. Fall. Claremont, Cal. Black with blue wing
covers. Abdomen extending beyong wing covers. 5 mmx 2!4 mm.

44 Journal of Entomology and Zoology

Microlipus n. sp. Fall. Baker. Mountains near Claremont, Cal. Grey with orange
prothorax and the tips of the wing covers orange. Long saw-toothed antenne.
Prominent eyes. 344mmx1%mm.

Attalus trimaculatus Motz. Fall. Baker. Laguna Beach, Cal. Orange brown with
dark brown markings. Bead-like antenne. 21% mmx 1% mm.

Attalus lobulatus Lec. Fall. Baker. Claremont, Cal. Black with light brown rim
around the wing covers. Bead-like antenne. Tip of abdomen showing.
2mmx 14mm.

Pristoscelis grandiceps Lec. Fall. Laguna Beach, Cal. Shiny black. Covered
with hairs. Long prothorax and head. Long rectangular shaped beetle.
5mm x 244 mm.

Prisotoscelis squalidus Lec. Fall. Baker. Mountains near Claremont, Cal. Shiny
black. Covered with hairs. Prominent eyes. Bead-like antenne. 24mm x 1% mm.

Trichochrous squalidus Lec. Fall. Baker. Claremont, Cal.; Laguna Beach, Cal.
Grey, covered with fine grey hairs. Short antenne. Prothorax rounded.
4mm x 2mm.

Trichochrous conspersus Casey. Fall. Baker. Mountains near Claremont, Cal. Black
covered with grey hairs. Short bead-like antenne. 314 mmx 112mm.

Trichochrous sp. Fall. Baker. Claremont, Cal. Rusty black, covered with
fine grey hairs. Bead-like antenne. 3 mmx 1mm.

Trichochrous s.p. Fall. Laguna Beach, Cal. Black, covered with long
black hairs. Rather oval-shaped. 34% mmx1%mm.

Trichochrous enescens Lec. Fall. Baker. Laguna Beach, Cal. Shiny black. Short
antenne, thick. 2mmx 1mm.

Listrus sp. Fall. Baker. Claremont, Cal. Black, with grey markings. Short,
rather thick, antenne. 2'4 mmx 1mm.

Listrus difficeis Lec. Fall. Baker. Mountains near Claremont, Cal. Grey with black
markings. Antenne medium length and rather thick. 3 mmx 12mm.

Listrus famelicus Casey. Fall. Baker. Claremont, Cal. Black with grey markings.
Short thick antenne. Quite prominent eyes. 2'4mmx1mm.

MELOID

Nemognathus scutellaris Lec. Fall. Baker. Claremont, Cal. Yellowish brown. Long
prothorax. 6'4mmx 3mm.

Nemognatha Fall. Claremont, Cal. Brown. 8 mmx 3mm.

Epicanta oblita Lec. Fall. Baker. Mountains near Claremont, Cal.; Laguna Beach,
Cal. Black. Slender with small round head. 7 mmx 2mm.

Cantharis auriculata Horn. Fall. Baker. Claremont and mountains near. Bluish
green with orange on the head. Covered with fine white hairs. 1014 mmx 3‘ mm.

Cantharis eneipennis Lec. Fall. Claremont, Cal. Green with red prothorax
and head. Wing covers rough as though covered with fine pores. Abdomen a
little longer than wing covers. 11mmx4mm.

Cantharis childu, Lec. Southern California. Black with orange around
front portion of prothorax. Half of abdomen extending beyond wing covers.
134% mmx 4% mm.

Cantharis cyanipennis Say. Southern California. Peacock green with
black legs and antenne. Head and prothorax shaped like a house-fly’s. Antenne
very short. 16mmx5%mm.

Calospota elegans Lec. Fall. Baker. Claremont, Cal. Black with orange markings
on wings. Last segment of antenne oval shaped. Prothorax triangular with small
part at the base of the head. 8% mmx 3mm.

Tegrodera erosa Lec. Claremont, Cal. Veins of wing covers are yellow
with brown background and brown tips. Prothorax is brown. Head is deep
orange or red. Head contains two deep creases. Prothorax has a deep crease
lengthwise. 23'4 mmx 9% mm.

MOIDELLID

Moidella scutellaris Fab. Fall. Baker. Claremont, Cal. Black. Prothorax broad as
the body. Abdomen pointed and extending downward below wing covers. Antenne
short. 5mmx2mm.

Moidellistena vilis? Lec. Fall. ——. Laguna. Black. Body tapering to a point.
34%4mmx1%mm,

Pomona College, Claremont, California 45

NITIDULIDZ®

Nitidula ziczac Say. Fall. Baker. Claremont, Cal. Brown with lighter brown
markings. Large prothorax. Wing covers covering all but last segment of abdo-
men. 4mm x 2mm.

Carpophilus pallipennis Say. Fall. Baker. Claremont, Cal. Dark brown with light
brown wing covers. Wing covers short. Abdomen pointed. 4mm x 2mm.
OEDEMERID =
Copidita cyanipennis Horn. Fall. Baker. Claremont, Cal. Purple in color. Palpi

resembling short antenne. 6mm x 2!% mm.

Copidita 4 maculata Mob. Fall. Laguna. Light brown with greyish brown wing
covers. Palpi quite long and prominent. Body long and slender. 15 mmx 4mm.

Asclera excavata Lec. Fall. Baker. Claremont, Cal. Black with brown prothorax.
Body slender. Palpi protruding forward like antenne. 6 mmx 2mm.

OTIORHYNCHID

Orphryastes latinostris Lec. Fall. Claremont, Cal. Dark grey with lighter.
grey head. Wing covers and prothorax covered with small indentations. Snout
or trunk large. Prothorax and top of head region have central crease.
15mmx7% mm.

Eupagoderes varius Lec. j Claremont, Cal. White with grey stripes
running lengthwise. Head cream-colored. Antenne short. Body very rounded.
10 mm x 5 mm.

Rhigopsis effracta Lec. Fall. Baker. Claremont, Cal. Dark grey and black. Body
rough. Short clubbed antenne. 6 mmx 3mm.

Mimetes setulosus Lec. Fall. Baker. Claremont, Cal. Very dark grey. Body
ribbed lengthwise. Prothorax spherical. Wing covers taper to a point.
7% mm x 3 mm.

Aramigus fulleri. Horn. Fall. Baker. Claremont, Cal. Greyish brown. First seg-
ment of antenne extremely long and antenne clubbed. Eyes are prominent.
7% mm x 344 mm.

Scythropus califoricus Horn. Fall. Baker. Claremont, Cal. Brown. Body slender.
Antenne short and clubbed. Mandibles hard and pointed. 7'’%4 mmx 2% mm.

PARNID
Dryops productus Lec. ——. Metz. Claremont, Cal. Rusty black. Large prothorax.
8 mm x 3 mm.
PTINIDA

Ptinus agnatus Fall. Fall. Baker. Claremont, Cal. Brown. Long antenne. Small
prothorax and head. Prothorax and head round. Wing covers oval-shaped. Long
hairs on the body. 2% mmx1%mm.

Sinoxylon declive Lec. Claremont, Cal. Black with red legs. Large
broad prothorax with short broad head covered with hairs. 6 mmx 2'%4 mm.
Polycaon stontii Lec. Fall. Baker. Claremont and mountains near. Black. Head
and prothorax covered with fine hairs. Eyes prominent. Large strong-looking

mandibles. 1914 mmx 64 mm.
RHIPIPHORID ©

Rhipiphorus dimidiatus Fab. Fall. Baker. Mountains near Claremont, Cal. Black
with yellow wing-covers tipped with black. Antenne comb-like. Long prothorax
pointed at the base of the wings. Wing-covers pointed at the ends. 7 mmx 24 mm.

Rhipiphorus cruentatus Germ. Fall. Baker. Mountains near Claremont, Cal. Orange
with black meso and metathorax and black wing tips. Comb-like antenne and
long pointed prothorax. 5 mmx 2mm.

RHYNCHITID
Reporaus [Rhynchites] glastinus Lec. Fall. Baker. Mountains near Claremont. Dark
brown. Long slender head. Long oval-shaped prothorax. Tips of wing-covers
rounded. Last two segments of antenne enlarged. 314 mmx2mm.
SILPHID ®
Silpha ramosa Say. ——. Claremont, Cal.; Reno, Nev.; Sheridan, Wyo. Dull
black. Rough wing covers. Finely segmented club-like antenne. Large, broad
prothorax and very small head. 14mmx7mm.

46 Journal of Entomology and Zoology

Necrophorus nigrittus Mann. Claremont, Cal. Black. ‘Three segments
of abdomen extending beyond the square-cut wing-covers. Antenne have red
plumes on the ends. Legs covered with fine hairs. Prothorax grooved. Eyes
large. 21 mmx 9% mm.

STAPHYLINID 4

Cafius canescens Makl. Bemb. Baker. Laguna, Cal. Grey-black. Almost no wings;
body slender. 7mmx2mm.

Cafius seminitens Horn. Fall. Laguna, Cal. Black; wings dull; thorax, head
and abdomen shining. ‘Thorax slightly ridged. 9% mmx 3mm.

Cafius luteipennis Horn. Bernh. Baker. Laguna Beach, Cal. Abdomen reddish
brown; head and thorax brown; short wing covers tan. Rather prominent scutel-
lum. 54mmx1%mm.

Cafius lithocharinus Lec. Bernh. Baker. Laguna Beach, Cal. Body dark brown
with tip of abdomen reddish and the ends of the wing covers a lighter brown.
Head broader than thorax. 6%4mmx2mm.

Cafius sulcicollis Lec. Bernh. Baker. Laguna Beach, Cal. Dark brown with tip of
abdomen a lighter shade. 41%4 mmx 1% mm.

Boletobius cincticollis Say. Baker. Claremont, Cal. Reddish brown, tan wing
covers with brown spot on the end. Small head. 2% mmx 1%mm.

Boletobius californicus Bik. Baker. Mountains near Claremont, Cal. Abdo-
men brown, head and thorax tan; tan wing covers with brown spot on end.
Thorax and abdomen tapering to a point at caudal end. 4mmx 2mm.

Anthobium atriventre Cas. Baker. Mountains near Claremont, Cal. Tan in
color. Wing covers covering almost all of the abdomen. 2mmx1mm.

Pelecomalium floribundum Lec. Baker. Mountains near Claremont, Cal.
Head, thorax and legs red; abdomen brown, and wing covers tan. 34% mmx 114 mm.

Protinus sulcatus Fauv. Fall. Baker. Mountains near Claremont, Cal. Dark brown
with red legs. Clubbed antenne. 144 mmx 1mm.

Tachyporus californicus Horn. Baker. Claremont, Cal. Golden brown with
brown abdomen. Abdomen covered with long hairs. 3 mmx 14mm.

Sculptilis Casey. Baker. Mountains near Claremont, Cal. Black with white
markings. Very prominent eyes. 5%-mmx1%mm.

Sunicus Cas. Baker. Mountains near Claremont, Cal. Black. Head and
thorax small. 34% mmx1%mm.

Layi Cas. Baker. Mountains near Claremont, Cal. Dull black. Prothorax
small. 4mmx1%mm.
Lathrobium jacobinum Lec. Baker. Mountains near Claremont, Cal. Dark

shiny brown with red legs. Long and slender. 8 mmx1%mm.

Bledius latecollis Lec. Baker. Mountains near Claremont, Cal. Brown body
with tan legs and wing covers. Small head. 3% mmx1%mm.

Bledius ruficornis Lec. Baker. Mountains near Claremont, Cal. Dull black
prothorax and head; tan wing covers; shiny black abdomen. 344 mmx 1mm.
Aleochara pubenita Kg. Baker. Claremont, Cal. Tan with short dark brown

wing covers. Short, thick antenne. 344mmx1%mm.

Aleochara bipustulata Lec. Baker. Claremont, Cal. Shiny black. Short wing
covers; short thick antenne. 3 mmx 1mm.

Platystethus americanus Er. Baker. Claremont, Cal. Black. Head and pro-
thorax round. Wing covers and abdomen short. Medium length antenne, clubbed
at the end. 3mmx1'3 mm.

Atheta picipennis Okkl. Baker. Mountains near Claremont, Cal. Black with
short brownish wing covers. Legs relatively long. Ventral side covered with
fine hairs. 27 mmx1mm.

Atheta dentaca Bh. Baker. Mountains near Claremont, Cal. Dull black. Short
thick antenne. Wing covers about a third the length of abdomen. 214 mmx1mm.

A. occidentalis Bernh. Baker. Mountains near Claremont, Cal. Shiny black
with brownish grey wing covers. Last two segments of abdomen larger than
others. 3mmxlmm.

A. sordida Mann. Baker. Claremont, Cal. Black with bronze colored wing
covers. Body tapering towards the tip of the abdomen. Prothorax with a trans-

adi

Pomona College, Claremont, California 47

verse furrow. Antenne thick and finely segmented. Fine hairs extending on
either side of the abdomen. 3mmx143 mm.

A. fenyon Bernh. Baker. Claremont, Cal. Black with dark brown wing
covers. Antenna short and finely segmented. Small hairs extend from the ventral
side of the abdomen. 3 mmx 1mm.

Haphdeny flavipennis Cas. Baker. Mountains near Claremont, Cal. Black
with greyish brown wing covers. Short, finely segmented antenne. Abdominal
segments large and few. 344 mmx 1mm.

Pontomalota bakeri Bernh. Bernh. Baker. Laguna Beach, Cal. Tan or yellowish brown
with third segment from the top of the abdomen dark in color. Prothorax with a
transverse ridge. Last segment of antenne dark in color.

Tarphiota pallidipes Cas. Bernh. Baker. Laguna Beach, Cal. Black. Short fine
antenne. 2% mmx % mm.

Tarphiota pacifica Bernh. Bernh. Baker. Laguna Beach, Cal. Black. Medium
length antenne with the last segment broader than others. Transverse crease on
prothorax. 3mmx1mm.

Quedius explanatus Lec. Baker. Mountains near Claremont, Cal. Black.
Antenne resembling horns and finely segmented. Long prothorax. Last segment
of abdomen covered with fine hairs. Other segments contain some hairs. Pro-
thorax large and smooth. 12mmx4mm.

Staphylinus paphyrenus Lec. Baker. Mountains near Claremont, Cal. Black
with prothorax and wing covers deep purple. Reddish, legs and antenne with
last two segments of abdomen a dark brown. Antenne medium length and bead-
like. Head large and round. Prothorax with a transverse median line.
10 mm x 3 mm.

Creophilus villosus Grav. Metz. Claremont, Cal. Black with greenish grey
markings on wing covers and abdomen. Covered with fine hairs except prothorax,
which is smooth. Antenne clubbed and bead-like. 19 mmx 6mm.

Hadrotes crassus Man. Fall. Laguna Beach, Cal. Black. Antenne bead-
like. Large prothorax. Legs covered with short hairs. 134%. mmx4mm.

Philonthus triangulum Horn. Baker. Claremont, Cal. Black with brownish
red wing covers. Long legs with fine hairs over the legs and body. Antenne
short and club-like. 6 mmx 2mm.

Philonthus nigritulus Grav. Baker. Mountains near Claremont, Cal. Black.
Bead-like antenne. Large head and prothorax. 4mmx1'44 mm.

Philonthus longicornis Steph. Baker. Claremont, Cal. Black. Narrow oval-
shaped head, narrower than prothorax and prothorax narrower than abdomen.
Bead-like antenne. 814 mmx 2'%mm.

Staphylinus tarsus Lec. Fall. Claremont, Cal. Black. Bead-like antenne.
Prothorax with a transverse line. Large mandibles. 13% mmx4mm.

TROGOSITID

Trogosita virescens Fab. Claremont, Cal.; Reno, Nev. Shiny blue or
green. Short antenne, long protruding head. Long prothorax. 121% mmx 4!4 mm.
Tenebrioides californica Horn. Fall. Baker. Claremont, Cal. Dark brown. Ribbed
wing covers. Large flat prothorax. Large flat head extending forward. Short

antenne. 7% mm x 2% mm.

ANTHICIDE

Corphyra inconspicua Horn. Fall. Baker. Claremont, Cal. Black body, brown pro-
thorax. Prothorax round, head bead-like. 6 mmx 244 mm.

Notoxus constrictus Casey. Fall. Baker. Laguna Beach, Cal. Tan with brown stripe
crosswise of wing cover. Head much narrower than prothorax. Prothorax ex-
tending to a point over head, which is turned downwards. 4mm x 2mm.

Notoxus sparsus Lec. Fall. Baker. Mountains near Claremont, Cal. Brown with
two darker brown stripes running crosswise of wing covers. Prothorax extending
to a point over the head. Head turned down underneath the large portion of pro-
thorax. 3mmx1%mm.

Notoxus calcarutus Horn. Fall. Baker. Claremont, Cal. Tan with two brown spots
and two brown stripes on wing covers. Prothorax and head have same general
position and shape as above. Larger than the above one. 414 mmx2mm.

48 Journal of Entomology and Zoology

Notoxus constrictus Casey. Fall. Baker. Claremont and mountains near. Tan with
two spots and one stripe of dark brown on wing covers. Head and prothorax
shaped the same as former. Antenne finely segmented. 3mmx 1%mm.

Notoxus sparsus Lec. Fall. Baker. Claremont, Cal., and mountains near. Grey with
dark brown marking. Prothorax reddish brown. Prothorax resembles head with
eyes and pointed snout. Bead-like antenne. 3 mmx 1/2 mm.

Notoxus n. sp. Fall. Baker. Claremont, Cal. Dark brown. Prothorax and head
both round with decided break between the two. Antenne bead-like. 3mm x 1mm.

Anthicus formicarius Goeze. Fall. Baker. Claremont, Cal., and mountains near.
Dark brown with lighter brown prothorax. Prothorax becomes larger at head
region. Head round and small area attached to prothorax. 3 mmx 14% mm.

Tappus n sp.? Fall. Baker. Laguna Beach, Cal. Reddish brown with black
wing covers. Palpi clubbed at the end. Prothorax larger at head region. Head
round and flat. Antenne bead-like. 2'4 mmx 1mm.

BRUCHID

Bruchus limbalus Fall. Claremont, Cal. Smoke grey with a light brown
stripe on each wing. Body short and thick. Prothorax oval shaped with bead-
like head set on to it. Antenne short and thick. 2% mmx 1%mm.

Bruchus pruininus Horn. Fall. Baker. Mountains near Claremont, Cal. Dark brown
with grey spots. Oval shaped. Last segment of abdomen extending beyond wing
covers. A grey spot on each wing and one on prothorax. 2mmx 1/2 mm.

BUPRESTID 4

Anthaxia eneogaster Fab. Fall. Baker. Claremont and mountains near. Bronze
colored. Prothorax broad. Eyes elongate. Short thread-like antenne. Green on
ventral side. 5% mmx 2% mm.

Anthaxia eneogaster Fab. Fall. Baker. Claremont and mountains near. Bronze
colored. Head and thorax rectangular in shape and as broad as wing covers.
4mm x 2 mm.

Chrysolothris dileta Lec. Fall. Baker. Claremont, Cal. Bronze colored. Short
antenne. Veins in wings prominent. 8 mmx 3mm.

Acmeodera gemina Horn. Fall. Baker. Mountains near Claremont, Cal. Brown
with gold markings. Beetle long and slender. Short thick antenna. 5’ mm x 2mm.

Acmeodera labyrinthica Fall. Fall. Baker. Claremont, Cal. Bronze with gold spots.
Body covered with long fine hairs. Ends of wing covers rough. 9/2 mm x4mm.

Acmeodera acuta Lec. Fall. Baker. Claremont, Cal. Bronze with gold spots with a
tinge of purple. Covered with fine hairs. Prothorax containing a median line.
8% mmx 3 mm.

Acmeodera prepburnii Lec. Fall. Baker. Claremont, Cal. Bronze with considerable
tan markings on wing covers. Similar in general appearance to above except
for markings in color. 11mmx+4%mm.

Acmaodera fenyesi Fall. Fall. Baker. Claremont, Cal. Bronze with a few yellow
spots on wing covers. Covered with long fine hairs. Wing covers taper to a
point. 9mmx 3% mm.

Acmeodera quttifera Lec. ———. Baker. Mountains near Claremont, Cal. Dark bronze
colored with a few yellow spots. Short anteane. 6!'4 mmx 2mm.

Aguilus jacobinus Horn. Fall. Baker. Claremont and mountains near. Bronze.
Body long and slender. Short antenne. Soft wing covers. 1mmx2mm.

BYRRHID

Amphicyrta dentipes Fr. Fall. Baker. Mountains near Claremont, Cal. Black. Oval
shaped [almost spherical]: Small thread-like antenne. Small short legs. Head
small, not prominent from dorsal view. 8 mmx 5% mm. ;

CALANDRID

Sphenophorus monterensis (romerinus) Lee. Fall. Laguna Beach, Cal. Black.
Large prothorax. Small pointed head with trunk. Antenne knobbed.
10% mmx 3% mm.

Scyphophorus yucce Horn. ——. Claremont, Cal. Black. Wing covers
ribbed and shorter than abdomen. Prothorax large and flat. 15 mmx 6% mm.
CERAMBYCID£
Cyllene antennatus White. Fall. ——. Claremont, Cal. Brown with grey prothorax

Pomona College, Claremont, California 49

and grey markings on the wing covers. Antenne nearly as long as the body. Body
tapering. 21mm x7 mm.

Xylobrechus insignis Lec. Fall. Laguna Beach, Cal. Head and prothorax
black. Wing covers brown with horizontal stripes of yellow. Legs a light brown.
Head small and flat. Prothorax sphere-shaped. 20/2 mmx 51% mm.

Xylotrechus naaticus Mann. Fall. Claremont, Cal. Dark brown with bronze
markings on the wing covers. Body quite slender. 14mm x 414 mm.

Tragidion annulatum Lec. Fall. Laguna Beach, Cal. Black velvety head,
thorax and legs, with burned orange colored velvety wing covers. Prothorar
pointed on either side. Wing covers slightly ridged. 25 mmx 8 mm.

Strangalia delicata Lec. Fall. Baker. Claremont, Cal. Black with the base of the
wing covers tan, and red legs. Body slender and wasplike. Wing covers large
at the base and small at the tip. Antenne as long as the body. Abdomen extending
beyond wing covers. 11mm x2mm.

Leptura instabilis Hold. Fall. Claremont, Cal. Golden brown with black
spots. Head small, body large in comparison. Antenne about half as long as
body. 14mmx/7mm.

Leptura sexspilota Lec. Fall. Baker. Claremont, Cal. Dull brown with black spots.
Reddish colored legs. Last segment of abdomen extending beyond wing covers.
Head small and pointed. Prothorax with a crease in the middle running length-
wise. 9mmx4mm.

Leptura molybdica Lec. Fall. Baker. Claremont, Cal. Dark green head and pro-
thorax. Blue wing covers with orange spots at base. Body slender. 544mm x 24mm.

Ipochus fasciatus Lec. Fall. Baker. Claremont, Cal. Greyish brown with gray mark-
ings on wing covers. Body and prothorax both rounded. Head short and nearly
as broad as prothorax. Antenne nearly as long as body. 8 mmx 3% mm.

Synapheta cuexi Lec. Claremont, Cal. Grey with brown spots. Antenne
a little longer than body. Antenne containing few joints. Prothorax pointed on
the sides. 20 mmx 10mm.

Prionus californicus M. Claremont, Cal. Large brown beetles. Antenne
pointed on either side of each joint. Scutellum shaped like a semicircle. Two
jagged prongs on each side of prothorax. Antenne in front of the eyes.
46% mm x 20 mm.

Asemum moestum Hald. Fall. Claremont, Cal. Black. Head short and flat,
forming with the prothorax a rounded appearance. Prothorax as broad as body.
Antenne short. 12'’4 mmx 5mm.

Criocephalus productus Lec. ——. Claremont, Cal. Reddish brown. Antenne
containing a spine at every joint. Antenne moderately long. Eye patch large, ex-
tending back and below antenne. Wing covers curved in at the tips. 37 mm x 11mm.

Hylotrupes ligneus Fab. Fall. Baker. Claremont, Cal. Black with gold markings.
Prothorax rounded. Wing covers rectangular. Head small and _ pointed.
114 mmx3% mm.

Phymatodes obscurus Lec. Fall. Baker. Claremont, Cal. Dark brown. Antenne
as long as body. Prothorax round with lengthwise ridge. Femur of legs shaped
like an Indian club. 13 mmx 4% mm. ‘

Purpuricenus dimidiatus Lec. Fall. Metz. Claremont, Cal. Black with rust red col-
ored prothorax and base of the wings. Antenne over half the length of body.
15mmx 5% mm. '

CHRYSOMELID

Lema trivittata Fall. Baker. Claremont, Cal. Black and greenish brown
striped. Stripes running lengthwise. Head and prothorax much narrower than
the rest of body. Antenne thick. 6% mmx 3mm.

Coscinoptera aneipennis Lec. Fall. Baker. Claremont, Cal. Bronze colored with
grey thorax and head. Prothorax extending over the top of the head. Body short,
prothorax as broad as body. Antenne very short. Eyes small and bead like.
7mm x 3% mm.

Saxinis saucia Lec. Fall. Baker. Claremont, Cal. Blue with red spots on both sides,
at the base of the wings. Short with prothorax extending over the top of the
head. Wing covers squared at the tips. 5/2 mmx 3mm.

50 Journal of Entomology and Zoology

Exema conspersa Mann. ——. Metz. Claremont, Cal. Rusty black. Small, rough,
oval shaped. 3 mmx 2mm.

Cryptocephalus sanguinicollis Suffr. Fall. Baker. Claremont, Cal. Black with red
prothorax. Antenne very short and thread-like. 4mm x 3mm.

Cryptocephalus spuncus Lec. Fall. Baker. Mountains near Claremont, Cal. Brown
with darker brown longitudinal stripes. Wing covers ridged. 4/2 mmx 2% mm.

Pachybrachys punctatus Bowditch. Fall. Baker. Laguna Beach, Cal. Brown or
brown with black markings. Head extending a little beyond prothorax. Body
short, rough and rectangular. 3% mmx 2mm.

Pachybrachys hybridus? Supr. Fall. Baker. Claremont, Cal., and mountains near.
Black with red prothorax. Wing covers ridged lengthwise. Thread-like antenne
clubbed at the end. 3'4mmx2mm.

Glyptoscelis squamulatus Cr. Fall. Baker. Laguna Beach and Claremont, Cal. Grey
or brownish grey. Covered with short grey hairs. Prothorax narrower than the
body and oval shaped. 8mmx4%mm.

Chysochus cobaltinus Lec. Fall. Hamilton. Claremont, Cal.; Laguna Beach, Cal.
Metallic blue or green color. Prothorax small, head invisible from dorsal view.
11 mmx 6% mm.

Colaspidea varicolor Cr. Fall. Baker. Claremont, Cal. Bronze colored. Small pro-
thorax with short thick body. Head not evident from dorsal view. 342mm x 1/2 mm.

Glyptoscelis smaragdulus Lec. Southern California. Dull green or a dull purple.
Small prothorax which extends over the top of the head. 414 mmx 24 mm.

Haltica carinata Germ. Fall. Baker. Claremont, Cal. Wine ‘colored, changing to
green. Prothorax oval shaped. Bead-like antenne. 412mm x 2/2 mm.

Crepidodera cucumeris Harr. Fall. Baker. Claremont, Cal. Black, Wing covers
ridged longitudinally. Oval shape. 1% mmx 1mm.

Trirhabda flarolimbata Mann. Fall. Baker. Laguna Beach; Claremont, Cal.

Monoxa Fall. Baker. Claremont, Cal.

— Monoxa puncticallis Say. Fall. Baker. Laguna Beach, Cal.

Crepidodera subcrinita Lec. Santa Monica, Cal. Dark brown. Small oval-shaped
body. 2mmx1%mm.

Systena taeniata Say. Fall. Metz. Baker. Claremont, Cal. ‘Tan body with brown
stripes lengthwise of wing covers. Brown head. Small head projecting beyond
prothorax. Bead-like antenne. 3’ mmx 2mm.

Gly ptina atriventris Horn. Fall. Pomona, Cal. Medium brown. Oval shaped.
2mm x 1 mm.

Glyptina cerina Lec. Pomona, Cal. Tan colored. Small prothorax ex-
tending over head. 2mmx1mm.

Odontota californica Horn. Fall. Baker. Mountains near Claremont, Cal. Tan col-
ored. Wing covers ridged lengthwise. Short thick bead-like antenne. 4mm x 2mm.

Cassida texana Cr. Fall. Baker. Claremont and mountains near. Pea green color.
Soft transparent wing covers and prothorax. Body oval shaped. Head not seen
from dors] side. Antenne club-like. 5% mmx 3%mm.

Diachus auratus Fabr. Fall. Laguna Beach, Cal. Dull greeniwith bronze pro-
thorax. Large prothorax. 142 mmx 1mm.

Psylliodes punctulata Mels. Fall. Baker. Laguna Beach, Cal. Black. Ridged wing
covers. Large femur. Oval shaped. 3mmx 2mm.

Longitarsus livens Lec. Fall. Baker. Laguna Beach, Cal. Tan colored. Oval shaped.
Medium length antenne. 2'4 mmx 1% mm.
Luperodes torquatus Lec. Fall. Baker. “Mountains near Claremont, Cal. Peacock

green body and head with light brown prothorax. Slender oval shaped. Square
shaped prothorax. 344 mmx2mm.

Diabrotica tenella Lec. ———. Baker. Claremont.
Diabrotica trivittata Mann. ——. Baker. Laguna Beach, Cal.

CICINDELID/®

Cicindela tranguebarica Horn. San Bernardino, Gali: Laguna Beach,
Cal. Green with a few gold markings. Black legs and eyes. Eyes prominent, pro-
thorax small. Long sharp pointed mandibles. 13% mm x 5% mm.
tufts of hairs. 11% mmx4%mm.

Pomona College, Claremont, California Dit

Cicindela oregana Lec. Claremont, Cal. Black with yellowish tan mark-
ings. Small prothorax, moderately long antenne. Ventral view of body with

Cicindela pacifica Lec. Fall. Laguna Beach, Cal. Greenish black with brownish
black head and prothorax. Rather long legs and long pointed mandibles.
13 mm x 5 mm.

CISTELID
Cistela opaca Lec. Fall. Baker. Claremont, Cal. Dull black. Small pointed head.
Antenne nearly as long as body. Wing covers ridged, coming to a point at the tip.
7mm x 3 mm.

Isomira luscidiosa Casey. Fall. Baker. Claremont, Cal. Medium brown. Oval
shaped. Thread-like antenne. 5 mmx 2%mm.
CLERIDZ

Trichodes ornatus Say. Fall. Baker. Claremont, Cal. Black with greenish yellow
markings. Prothorax and head covered with fine yellow hairs. Clubbed antenne.
10% mmx 3% mm.

Hydnocera scabra Lec. Fall. Baker. Mountains near Claremont, Cal. Black. Prom-
inent eyes. Head broader than prothorax. 5 mmx 2mm.

Lebasiella inaculicollis Lec. Fall. Baker. Claremont, Cal. Blue with red porthorax
and black head. Covered with fine hairs. Clubbed antenne. 4mmx 2mm.

Necrobia rufipes Fab. Fall. Baker. Claremont, Cal. Peacock green with red legs.
Prothorax and head covered with fine hairs. Clubbed antenne. Wing covers
finely ridged. 444 mmx 2% mm.

COCCINELLID 4

Hippodamia ambigua Lec. Baker. Claremont and Pomona, Cal. Red with
black prothorax and head. Very short antenne. Oval shaped. 744 mmx 44 mm.

Hippodamia convergens Lec. Baker. Claremont, Cal. Red and black. Red
wing covers with black spots. Black prothorax with two yellow spots. Black
head. 7mmx4% mm.

Coccinella californica Fab. Baker. Claremont, Laguna Beach, Cal. Black pro-
thorax and head, reddish brown wing covers. Almost round in_ shape.
7mmx4%4 mm. -

Coccinella sanguinea L. Fall. Baker. Mountains near Claremont, Cal. Black head
and prothorax with dark red wing covers. Small round beetle. 4mmx 3% mm.

Coccinella abdominalis Lay. Baker. Claremont, Cal. Yellowish green with
black spots. Spots run in parallel rows. 5mmx4mm.

Chicorus vivulnerus Mauls. Claremont Cal. Black with two red spots.
small prothorax. Round. 4%mmx4mm.

Psyllobora tedata Lec. Baker. Santa Paula, Cal.; Claremont, Cal.; Laguna,
Cal. Tan with two darker shades of brown spots. 2% mmx 2mm.

Hyperaspis lateralis Muls. Baker. Claremont, Cal., and mountains near. Black
with three bright red spots on each wing cover. 344 mmx 24 mm.

Hyperaspis fimbreolata Welsh. Baker. Claremont and mountains near. Black
with a greenish yellow spot on the edge of each wing cover. 214 mmx 2mm.
Hyperaspis spiculinota Fall. Fall. Baker. Mountains near Claremont, Cal. Black

with three greenish yellow spots on each wing cover. 2% mmx2mm.

Hyperaspis taeniata Lec. Fall. Baker. Claremont, Cal., and mountains near. Black
with a greenish yellow spot on the outer edge of each wing cover. 2mmx 114mm.

Exochomus fasciatus Casey. Fall. Baker. Claremont, Cal., and mountains near.
Black head and prothorax. Red wing covers with two black spots on each.
314 mm x 24% mm.

CUCUJID

Silvanus advena Fall. Baker. Claremont, Cal. Light brown. Knobbed antenne.

2mm x 1 mm.
CURCULIONID =

Sitones Fall. Baker. Claremont, Cal. Brownish grey with black specks.

_ Elongate; beak broad and squared. 5% mmx 2% mm.

Cleonus [Lixus|] modestus Mann. Fall. Baker. Mountains near Claremont, Cal.
Grey with ventral side a paler grey. Beak moderately long and slender but blunt;
eyes round and flat. 94% mmx 2mm.

52 Journal of Entomology and Zoology

Dinocleus [Centrocleonus] albovestitus Cas. Fall. Claremont, Cal. Black cov-
ered with fine grey hairs. Antenne short and thick, coming from ventral side of
beak. 15mmx5%mm.

Docytomus hystricula Casey. Fall. Baker. Mountains near Claremont, Cal. Dark
grey with red legs. Short black antenne. 3 mmx 1% mm.

Orchestes puberulus Boh. Fall. Baker. Claremont, Cal. Greyish brown with red
legs. Small pointed head and broad rounded body. 3% mmx 1% mm.

Tychius prolixus Casey. Fall. Baker. Claremont, Cal. Brown with grey and black
striped head. Wing covers finely ridged. 4mmx 2mm.

Copturus adspersus Lec. Fall. Baker. Claremont, Cal. Black with white spots.
Beak curved under the body and black. 3%mmx1%mm.

Ceutorhynchus disturbatus Dietz. Fall. Baker. Claremont, Cal. Brown with a few
white markings. Body broad and rounded with slightly pointed head. Two white
streaks on wing covers parallel to the tips of the wings. 2% mmx1%mm.

Baris rubripes Casey. Fall. Baker. Mountains near Claremont, Cal. Dark red.

Ridged wing covers. Body oval shaped. Antenne short and clubbed. 414 mm x 2 mm.

Trichobaris compacta Casey. Fall. Claremont, Cal.; Laguna, Cal. Black with
fine grey hairs running in parallel lines except for the portion of the head above
the beak, which has no hairs. 442 mmx 3mm.

Endalus n. sp. Fall. Baker. Laguna Beach, Cal. Black or red. Prothorax
short and broad. 2%mmx1%mm.

Epimechus mimicus Dietz. Fall. Baker. Laguna Beach, Cal. Black. Short with
broad abdomen. 3 mmx 2mm.

Emphyastes fucicola Mann. Fall. Baker. Laguna Beach, Cal. Reddish brown. Pro-
thorax round and shiny. Abdomen oval. 6mmx 2'%4 mm.

Phycococtes testacens Lec. Fall. Baker. Laguna Beach, Cal. Brown. Knobbed
antenne. Shape similar to above. 3% mmx1%mm.

DASCYLLID

Allopogon villosus Horn. Fall. Baker. Claremont, Cal. Black. Covered with brown
hairs. Medium length antenne with triangular shaped segments. Small prothorax
and head, long ribbed wing covers. 5’ mmx 2mm.

Anorus piceus Lec. Fall. Baker. Claremont, Cal., Laguna, Cal. Light brown. Long
antenne. Soft wing covers. Prominent eyes. 1012 mmx 3%mm.

Helodes apicalis Lec. Fall. Baker. Mountains near Claremont, Cal. Brown. Long
antenne. Small prothorax and head. 5mmx2mm.

Cyphon concinnum Lec. Fall. Baker. Mountains near Claremont, Cal. Dark brown
with large light brown spot on each wing. Medium length antenne. Oval shaped.
3% mm x 2mm.

DERMESTID

Byturus gusescens Lec. Fall. Baker. Claremont, Cal. Greyish brown with grey
markings. Short antenne. Oval shaped. 3mmx1%mm.

Dermestes talpinus Mann. Fall. Metz. Claremont, Cal. Black with grey and brown
markings. Covered with short hairs. Sartellum covered with a tuft of yellow
hairs. Antenne short with last three segments forming a red knob. 7 mmx 3%4mm.

Dermestes marmoratus Say. Claremont, Cal.; Reno, Nev. Black with
two large grey spots and several smaller ones. Antenne very short and knobbed.
Legs covered with short spines. 11 mmx 5mm.

Megorama frontalis Lec. Fall. Baker. Claremont, Cal. Greyish brown. Oval
shaped. Antenne very short. 4mmx2%mm.

DY TISCID/E

Deronectes striatellus Lec. Fall. Baker. Claremont, Cal., and mountains near. Black.
Oval shaped. Prothorax pointed where the wing covers join. Thread-like
antenne. 4mmx 24% mm.

Hydroporus vilis Lec. Fall. Baker. Mountains near Claremont, Cal. Black with
very dark brown wing covers. Oval shaped. 3% mmx 2mm.

Thybiosoma regularis Lec. Claremont, Cal. Dark reddish brown. Oval shaped.
Short, thread-like antenne. Wing covers meeting in almost invisible line.
12mm x 6% mm.

Pomona College, Claremont, California 53

Agabus lecontet Cr. Fall. Metz. Claremont, Cal. Dark brown with lighter brown
wing covers. Palpi small and not clubbed. Antenne short and_thread-like.
844mm x5 mm.

Agabus lugens Lec. Fall. ——. Claremont, Cal. Very dark brown. Oval shaped.
Small black eyes. 10mmx 5mm.

Colymbetes strigatus Lec. Fall. Dark brown. Wing covers covered with fine
ridges running cross wise of wings, resembling layers of muscles on tough part of
one’s hand. Eye patch contains four eyes. 18 mmx 84mm.

EROTYLIDZ

Dacne californica Horn. Fall. Baker. Mountains near Claremont, Cal. Dark brown.

Oval shaped. Clubbed antenne. 3 mmx 1% mm.
GYRINID

Gyrinus consobrinus Lee. Metz. Claremont, Cal. Shiny black. Oval shaped.
Fine ridges running lengthwise of wing covers. Eyes on the top of the head.
7% mmx 3% mm.

HISTERID =

Hololepta fossularis Say. Baker. Claremont, Cal. Black. Large prominent
mandibles. Antenne short with red knobs. Large prothorax. Wing covers short,
covering little over half of abdomen; have grown fast’ to body. Legs short.
17%. mmx7 mm.

Hololepta vicina Say. Fall. Claremont, Cal. Shiny black. General appearance
of former, except smaller. 914 mmx4mm.

Saprinus sulcifrons Lec.- Redondo, Cal. Shiny black. Tibia of leg
comb-like on the edge. Beetle oval shaped. Wing covers contain two ridges on
each. 7mmx 44 mm.

Saprinus vitrosus Lee. Metz. Claremont, Cal. Black. Oval shaped, almost
round. Short antenne. Wing covers not covering tip of abdomen. 3 mmx 2'4 mm.

Saprinus pectoralis Lec. Fall. Baker. Claremont, Cal. Shiny black. Large pro-
thorax. Short wing covers with few longitudinal creases. 4mm x 3 mm.

Sabunus peminosus Lec. Fall. Baker. Claremont, Cal. Shiny black. Short wing
covers creased. 4mmx3mm.

Saprinus lugens Lec. Fall. Baker. Claremont, Cal., and mountains near. Black.
Large prothorax. Oval shaped. Short wing covers. 7mmx5mm.

Hister sellatus Lec. Fall. Claremont, Cal. Black and red. Black with red wing
covers with black border on them. Three lengthwise creases on each wing. Broad
flat tibia with row of spurs on each side. 5mmx4mm.

Acritus maritimus Lec. Fall. Baker. Laguna Beach, Cal. Black. Shiny. Oval
shaped. 14%mmxi1mm.

2

»

1918 Pomona College Journal of Entomology and Zoology, Vol. X,, No. 2, June

Claremont-Laguna Diptera from the
Collections of the Department of
Zoology of Pomona College

Compiled by WALTER STuRGIS.

This list gives the first determinations of specimens collected in this region. No at-
tempt has yet been made to bring all the names up to date or to add more recent

records.
OESTRID 4
Gastrophilus equi Clark. ——. Baker. Claremont, Cal.
SARCOPHAGID 4£
Sarcophaga haemorrhoidalis Meigen. Parker. Baker. Claremont, Cal., and mountains
near.

Helicabia helicis Towns. Coq. Baker. Claremont, Cal.
Ravinia latisetosa Parker. Parker. Baker. Claremont, Cal.
Bottscheria cimbicis Towns. Parker. Baker. Claremont, Cal.
Ravinia communis Parker. Parker. Baker. Claremont, Cal.
Microchetina cineria Wulf. Coq. Baker. Claremont, Cal.

DEXIID£
Thelaira mexicana Maquart. ——. Baker. Claremont, Cal.
Myrocera tibialis Desvoidy. ——. Baker. Claremont, Cal.
DOLICHOPODID
Dalichophus crenatres Osten-Sacken. ——. Baker. Mountains near Claremont, Cal.
Dolichophus afflictus Osten-Sacken. ——. Baker. Laguna Beach, Cal.
PHORID =
Trineura velutina Meigen. Aldrich. Baker.
LONCHOPTERID &
Lonchopteride lutea Panzer. ——. Baker.
PIPUNCULID4

Chalarus spurius Fall. Aldrich. Baker.
CONOPID 2

Phsychocephala offinis Williston. Coq. Baker. Claremont, Cal.

Occemya baroni Williston. . Baker. Claremont, Cal., and mountains near.
Occemya abbreiviata Loew. Aldrich. Baker. Claremont, Cal., and mountains near
Myopa pictipennis Williston. Coquil. Baker. Claremont, Cal.

Myopa clausa Loew. Baker. Osten-Sacken. Claremont, Cal.

Zodion obliquefaciatum Osten-Sacken. Baker. Claremont, Cal.

Zodion fulvifrons Lay. Coquil. Baker. Claremont, Cal.

Dalmannia vitiosa Loew. Aldrich. Baker. Claremont, Cal.

Dalmannia picta Coquil. Coquil. Baker. Claremont, Cal.

ORTALID

Diacrita costalis Gerstaecher. Bezzi. Baker. Claremont, Cal
Anacompta latiuscula Lev. . Baker. Claremont, Cal.
Chrysomyza demandata Fab. Aldrich. Baker. Claremont, Ca).
Chetopsis enea Wiedemann. ——. Baker. Laguna Beach, Cal.

ASILID 4E

Lestomyia sabulonum Osten-Sacken. Coquil. Baker. Claremont, Cal.
Lestomyia fraudeger Williston. Coquil. Baker. Claremont, Cal.

Nicoles abdominalis Williston. Coquil. Baker. Mountains near Claremont, Cal.
Lasiopogan vivitiatus Loew. Baker. Claremont, Cal.

Leptogasler virgatus Coquil. ——. Baker. Mountains near Claremont, Cal.

28 Journal of Entomology and Zoology

Scleropogon jubatus Coquil. ——. Baker. Claremont, Cal.

Stenopgon albibasis Bigelow. Baker. Claremont, Cal.

Stenopagon califormiae Walker. Coquil. Baker. Claremont, Cale

Stenopogon obscuriventris Loew. Coquil. Baker. Claremont, Cal.

Saropagon luteus Coquil. Coquil. Baker. Claremont, Cal.

Tolmenus notatus Wiedemann. Baker. Claremont, Cal.

Erax subius Williston. Baker. Claremont, Cal.

Erax albibarbis Macquart. Coquil. Baker. Claremont, Cal.

Asilus occidentalis Hine. ——-. Baker. Claremont, San Antonio Canyon, Ontario, Cal.
Mallophora fautrix Osten-Sack. Baker. Claremont, Cal. Laguna Beach.
Mallophora megachile Coquil. Coquil.? Baker. Mountains near Claremont, Cal.
Dasyllus astur Osten-S. Baker. Claremont, Cal.

BOMBYLIID
Exoptota divisa Coquil. Coquil. Baker. Claremont, Cal.
Spongostylum simson Fabricius. Baker. Mountains near Claremont, Cal.
Spongostylum varia Fab. Baker. Mountains near Claremont, Cal.
Exoprosopa titubans Osten-S. Baker. Mountains near Claremont, Cal.
Anthrax alpha Osten-S. Baker. Claremont and mountains near.
Anthrax syrtus Coquil. Coquil. Baker. Claremont, Cal.
Anthrax nugator Coquil. Coquil. Baker. Claremont, Cal.
Anthrax sabulosa Coquil. Coquil. Baker. Claremont, Cal.
Anthrax agrippina Osten-S. Coquil. Baker. Claremont, Cal., and mountains near.
Anthrax sinuosa Wiedemann. Baker. Mountains near Claremont, Cal.
Anthrax morio Loew. Baker. Mountains near Claremont, Cal.
Anthrax lateralis Say. ——. Baker. Claremont, Cal.
Anthrax mira Coquil. Baker. Claremont, Cal.
Anthrax junctura Coquil. Baker. Claremont, Cal.
Anthrax miscella Coquil. Baker. Claremont, Cal.
Anthrax consescor Coquil. Coquil. Baker. Claremont, Cal.

Pantarbes capets Loew. ——. Baker. Claremont, Cal.
Phthiria notata Loew. ——. Baker. Claremont, Cal.
Phthiria sulphurea Loew. ——. Baker. Claremont, Cal.

Phthiria sinile Coquil. Baker. Mountains near Claremont, Cal.
Bombyluus major Loew. Coquil. Baker. Mountains near Claremont, Cal.
Bombyluus lancifer Osten-S. Coquil. Baker. Claremont, Cal.

Bombyluus albicapillus Loew. Coquil. Baker. Claremont, Cal.
Toxophora pellucida Coquil. Baker. Mountains near Claremont, Cal.
Geron semlis Fab. Baker. Mountains near Claremont, Cal.
Alphoebautus transitus Coquil. Baker. Claremont, Cal.

Eclinus auripilus Bigot. Baker. Claremont, Cal.

Ploas atratula Loew. Baker. Claremont, Cal.

Ploas melanocerata Bigot. Baker. Claremont, Cal.

Epacmus modestus Loew. Baker. Claremont, Cal.

Exoprosopa fascipennis Say. ——. Baker. Mountains near Claremont.
Lordotus planus Osten-S. ——. Baker. Claremont, Cal.

CULICIDZ
Culex quinquefasciatus Say. ——. Baker. Claremont, Cal.

Cluex inornatus Williston. —

Claremont, Cal.

BIBIONID
Dilophus breviceps Loew. Coquil. Baker. Catalina Island, Cal.
Dilophus occipitalis Coquil. Coquil. Baker. Claremont, Cal.
Bibio hirtus Loew. ; ‘
Bibio albipennis Say. Coquil. Baker. Claremont, Cal.

THEREVID 4
Psilocephala aldrichii Coquil. Coquil. Baker. Claremont, Cal., and mountains near.
Nebritus pellucidus Aldrich. Baker. Claremont, Cal.
Psilocephala baccata Coquil. Coquil. Baker. Claremont, Cal., and mountains near.
Psilocephala costalis Loew. Aldrich. Baker. Claremont, Cal., and mountains near.
Psilocephala levigata Loew. Baker. Claremont, Cal., and mountains near.
Psilocephala marcida Coquil. ——. Baker. Laguna Beach; Claremont, Cal.

Pomona College, Claremont, California 28)

ACROCETID& [Cytride]

Opsebius diligens Loew. Aldrich. Baker. Claremont, Cal.
Eulonchus smaragdinus Gerstaecker. Coquil. Baker. Claremont, Cal.
SYRPHID

Chrysotoxum laterale Loew. Baker. Mountains near Claremont, Cal.

Paragus tibialis Fall. Baker. Claremont, Cal.

Chrysogaster nitida Wied. Coq. Baker. Claremont, Cal., and mountains near.

Chrysogaster nigripes Loew. Baker. Claremont, Cal.

Nausigaster unimaculata Townsend. Aldrich. Baker. Claremont, Cal.

Melanostoma stegnum Say. Johnson. Claremont, Cal.

Syritta pipiens Linne. Baker. Claremont, Cal.

Lasiophthicus pyrastri Linné. Baker. Mountains near Claremont, Cal.

Eupeodes volucris Osten-S. Aldrich. Baker. Claremont, Cal.

Mesograma marginata [Or Syrphus quintius] Say. Baker. Claremont, Pine
Lake; California.

Allograpta obliqua Say. Aldrich. Baker. Claremont, Cal.

Allograpta fracta Osten-S. Aldrich. Baker. Claremont, Cal.

Spherophoria sulphuripes ‘Townsend. Baker. Claremont, Cal.; Pine Lake.

Syrphus arcuatus Fall. Aldrich. Baker. Claremont, Cal.

Syrphus mentalis Will. ——. Baker. Seattle, Washington; Claremont, Cal.

Syrphus americanus Wiedemann. Aldrich. Baker. Claremont, Cal.

Syrphus opinator Osten-S. Aldrich. Baker. Mountains near Claremont, Cal.

Mallota sackeni Williston. Baker. Claremont, Cal.

Specomyia brevicornis Osten-S. Baker. Claremont, Cal.

Copestylum margenatum Say. Coquil. Baker. Mountains near Claremont.

Volucella mexicana Macquatt. Baker. Mountains near Claremont, Cal.

Volucella avida Osten-S. Baker. Claremont, Cal.

Eristalus hirtus Loew. Baker. Mountains near Claremont, Cal.

Eristalus latifrons Loew. Loew. Baker. Claremont, Cal.

Eristalus tenax Loew. Baker. Laguna Beach, Cal.

Asemosyrphus mexicanus Macquart. ——. Baker. Mountains near Claremont, Cal.
Helophilus latifrons Loew. Baker. Claremont, Cal.
Spilomyia interrupta Williston. ——. Baker. Mountains near Claremont, Cal.
Criorhina coquilletti Williston. Aldrich. Baker. Claremont, Cal.

MUSCID 4

Calliphora erythrocephala Meigen. Coquil. Baker. Claremont, Cal.

Chrysemyia nigripes Wheeler. Aldrich. Baker. Mountains near Claremont, Cal.

Phormia regina Meigen. Baker. Claremont, Cal., and mountains near.

Pseudopyrellia cornicina Fab. Baker. Pine Lake, Claremont, Cal.

Lucilia sericata Meigen. Coquil. Baker. Claremont, Cal.

Myiospila meditabunda Fab. Aldrich. Baker. Mountains near Claremont; Visalia,
Call:

Musca domestica Linné.

Hematobia serrata Desvoidy.

Muscina stabulans Fall.

Baker. Claremont, Cal.
Baker. Claremont, Cal.
Baker. Laguna Beach, Cal.

TACHINIDE
Ravinia setosa Coquil. Aldrich. Baker. Claremont, Cal.
Ravinia communis Park. Aldrich. Baker. Claremont, Cal.
Ravinia dentata Coquil. Aldrich. Baker. Mountains near Claremont, Cal.
Frontina archippivora Williston. Aldrich. Baker. Mountains near Claremont, Cal.
Senotainia trilineata Coquil. Aldrich. Baker. Claremont, Cal.
Hilarella siphonina Zetters. Aldrich. Baker. Mountains near Claremont, Cal.
Melanophrys flavipennis Williston. Aldrich. Baker. Claremont, Cal.
Belvosia bifasciata Fab. Aldrich. Baker. Mountains near Claremont, Cal.
Exorista affinis Fall. Aldrich. Baker. Mountains near Claremont, Cal.
Sturmia oceliaris Coquil. Aldrich. Baker. Claremont, Cal.
Plagia americana Loew. Aldrich. Baker. Claremont, Cal.
A phrya ocypterata Townsend. Aldrich. Baker. Claremont, Cal., and mountains near.
Leucostonia senilis Townsend. Aldrich. Baker. Claremont, Cal.
Pachyophthalmus signatus Meigen. Aldrich. Baker. Mountains near Claremont, Cal.

30 Journal of Entomology and Zoology

Ocyptera caroline Desvoidy. Aldrich. Baker. Claremont, Cal.

Masicera exilis Coquil. Aldrich. Baker. Mountains near Claremont, Cal.
Trichopoda pennipes Fab. Baker. Claremont, Cal., and mountains near.
Echinomyia hyptrix Fab. Aldrich. Baker. Mountains near Claremont.

Echinomyia hystricosa Williston. Aldrich. Baker. Claremont, Cal.

Phorantha occidentalis Walker. ———. Baker. Claremont, Cal.

Senotainia trilineata Vander Wulp. Baker. Laguna Beach, Claremont, Cal.
Pachyophthalmus floridensis Townsend. Baker. Mountains near Claremont, Cal.
Siphosturmia rostrata Coquil. Baker. Claremont, Cal.

Xanthomelena arcuata Say. Baker. Claremont, Cal., and mountains near.
Blephanpeza leucophrys Wiedemann. Aldrich. Baker.

Clausicella setigera Yhomson. Aldrich. Baker. Laguna Beach, Cal.

Siphona plusie Coquil. Aldrich. Baker. Claremont, Cal.

Metacheta nelymus Walker. Aldrich. Baker. Claremont, Cal.

Admontia : Claremont, Cal.

Plagipr ospherysa parvipalpis Van der Wulp. Baker. Laguna Beach, Cal.
Gonia capitata DeGeer. Baker. Claremont, Cal.

Peleteria robusta Wiedemann. Coquil. Baker. Claremont, Cal., and mountains near.
Peleteria tessellata Fab. Aldridge. Baker. Claremont and mountains near.
Paradejeania rutiloides Jaennicke. Baker. Mountains near Claremont, Cal.
Epalpus signifera Walker. Coquil. Baker. Mountains near Claremont, Cal.

ANTHOMYIDZ

Aricia lucorum Fall. Aldrich. Baker. Claremont, Cal.

Phaonia burnneinervis Stein. ——. Baker. Mountains near Claremont, Cal.
Phorbia fusciceps Setters. Baker. Claremont, Cal.

Fhorbia offinis Stein. Baker. Mountains near Claremont, Cal.

Phorbia cinerella Fall. ——. Baker. Mountains near Claremont, Cal.
Pegomyia offinis Stein. ———. Baker. Laguna Beach, Cal.
Caricia nana Zetters. ——. Baker. Laguna Beach, Cal.

Fucellia rufitibia Stein. Aldrich. Baker. Laguna Beach, Cal.
Hylemyia alcathe Walker. Baker. Laguna Beach, Cal.
Phorbia cilicrura Rondani. Aldrich. Baker. Mountains near Claremont, Cal.

TABANIDZE

Tabanus punctifer Osten-S. Hine. Baker. Claremont, Cal.
Tabanus opacus Coquil. Coquil. Baker. Mountains near Claremont, Cal.

MYDAID ZZ

Midas claratus Drury. Claremont (?) Cal.
Leptomydas concinnus Coquil. Coquil. Baker. Claremont, Cal.
Leptomydas nirtus Coquil. Coquil. Baker. Claremont, Cal.

SAPROMYZID E

Lonchea polita Say. Baker. Claremont, Cal., and mountains near.
Sapromyza livingstoniu Coquil. Baker. Mountains near Claremont, Cal.
Sapromyza planiscuta ‘Thomson. Baker. Pine Lake, Claremont, Cal.
Sapromyza notata Fall. Baker. Mountains near Claremont, Cal.
Sapromyza flaveola Coquil. Aldrich. Baker. Launga Beach, Cal.
Sapromyza fraterna Loew. Aldrich. Baker. Laguna Beach, Cal.
AGROMYZID =
Desmometopa halteralis Coquil. ——. Baker. Claremont, Cal.
Desmometopa m-nigrum Zetters. Baker. Claremont, Cal.
Sinophthalmus pictus Coquil. Coguil. Baker. Mountains near Claremont, Cal.
Leucopis nigricornis Egger. Coquil. Baker. Mountains near Claremont, Cal.
Leucopis bella Loew. Aldrich. Baker. Claremont, Cal.
Rhicnessa coronata Loew. Aldrich. Baker. Claremont, Cal.
Cryptehetum icerye Williston. Aldrich. Baker. Claremont, Cal.
DROSOPHILID
Drosophila frunbris Fab. Coquil. Baker. Claremont, Cal.
BORBORID 4E
Borborus equinus Fall. ———. Baker. Mountains near Claremont, Cal.

Pomona College, Claremont, California Si

PHYCODROMID &
Calope frigida Fall. Aldrich. Baker.
GEOMYZID 4

Scyphella flava Linné. ——. Baker. Laguna Beach, Cal.
TRYPETIDZ
Trypeta occidentalis Snow. ——. Baker. Claremont, Cal.

Trypeta ochillee Johnson. Baker. Mountains near Claremont, Cal.
Oedaspus minuta Snow. Coquil. Baker. Claremont, Cal.

Rhagoletis caurina Doane. Coquil. Baker. Claremont, Cal.

Eatrata sparsa Weidemann. Aldrich. Baker. Laguna Beach, Cal.
Neaspilota signifera Coquil. Aldrich. Baker. Claremont, Cal.
Euaresta bella Loew. Baker. Mountains near Claremont, Cal.

Euaresta abstersa Loew. ——. Baker. Laguna Beach, Cal.
Euaresta equalis Loew. ——. Baker. Laguna Beach, Cal.
Euaresta araneosa Coquil. ——. Baker. Claremont, Cal.

Urellia occidentalis Adams. Baker. Claremont, Cal.

Urellia bisetosa Coquil. Johns. Baker. Claremont, Cal.

Urellia maverna Walker. Baker. Claremont, Catalina Island, Cal.
Tephritis gemella Coquil. Baker. Claremont, Cal.

Tephritis finalis Loew. Bezzi. Baker. Claremont, Cal.

Corphotricha culta Wiedemann. Aldrich. Baker. Claremont, Cal.
Ensina humilis Loew. Baker. Laguna Beach, Cal.

Epochra rubida Coquil. Bezzi. Baker. Mountains near Claremont, Cal.
OSCINIDE
Meromyza americana Fitch. ——. Baker. Claremont, Cal.

Chlorops rubida Coquil. Baker. Mountains near Claremont, Cal.

Chlorops assinilis Macquart. Aldrich. Baker. Laguna Beach, Cal.
SCIOMYZID £

Sepedon fuscipennis Loew. ——-. Baker. ,Mountains near Claremont, Cal.

HELOMYZID
Helomyza limbata Thomson. Aldrich. Baker. Claremont, Cal., and mountains near.
Levia Baker. Claremont, Cal., and mountains near. ,

EPHYDRIDZ
Mosillus eneus Fall. ——. Baker. Mountains near Claremont, Cal.
Mosillus subsultans Fab. Aldrich. Baker. Claremont, Cal.
Ochthera mantis DeGeer. Baker. Mountains near Claremont, Cal.
Pelina brevis Walker. Baker. Mountains near Claremont, Cal.
Notiphila quadrisetosa Thomson. Aldrich. Baker. Laguna Beach, Cal.
Parydra aurata Jones. Aldrich. Baker. Mountains near Claremont, Cal.
SIMULIIDZ
Simulium vittatum Zetters. Aldrich. Baker. Mountains near Claremont, Cal.
LEPTIDZ
Leptis pruinosa Bigot. Aldrich. Baker. Claremont, Cal.
Leptis punctipennis Say. Baker. Compton, Cal.
Leptis mystacea Macquart. ——. Baker. Ocean Coz sGal:
Symphoromyia cruenta Coquil. Coquil. Baker. Claremont, Cal.
STRATIOMYID2E
Sargus viridis Say. Aldrich. Baker. Claremont, Cal.
Stratiomys maculosa Loew. Coquil. Baker. Claremont, Cal.
Odontomyia binotata Loew. Aldrich. Baker. Claremont, Cal.
Nemotelus canadensis Loew. Coquil. Baker. Claremont, Cal.
Euparypus apricalis Coquil. Baker. Laguna Beach, Cal.
EMPIDID
Rhamphomyia biflata Coquil. Coquil. Baker. Claremont, Cal.
Rhamphomyia fimbriata Coquil. Coquil. Baker. Claremont, Cal.
Rhamphomyia scutellaris Coquil. Coquil. Baker. Mountains near Claremont, Cal.
Rhamphomyia loripedis Coquil. Coquil. Baker. Claremont, Cal.
Platypolpus equalis Loew. Aldrich. Baker. Claremont, Cal.
CORDYLURID# [or Scatophagidz] ’
Scatophaga stercoriaria Linné. ——. Claremont, Cal.

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1918 Pomona College Journal of Entomology and Zoology, Vol. X, No. 3, September

Isopods from the Claremont-Laguna
Region

ANTHURIDZ

Cyanthura sp. A number collected with eggs. Specimens have been sent for
further identification.

CIROLANIDZE

Cirolana harfordi Lock. One of the most common isopods in tide pools and under
stones.

C. h. var. spongicola Staf. Found in white sponge masses.

LIMNORIID=

Limnoria lignorum Rath. Found in floating wood which also contained a number
of Teredo.

DYNAMENID®
Dynamene glabra Rich. Common at low tide.
Cilicea cordata Rich. One dredged 10 fathoms.
C. gilliana Rich. One very near to this species dredged at from 10 to 15 fathoms.
C. caudata Say. Near this, but not quite the same.

C. sculpta Holmes.

SEROLID

Serolis carinata Lock. Two dredged by Bean and Nininger in 1915.

IDOTHEID
Ideothea gracillima Dana.
I. rectilinea Lock.
Pentidotea recata Stimp. Dredged off shore.
P. rotundata Rich. Pure green from alge.
P. whitei Stimp. Two specimens in five years.
P. stenops Ben. Laguna one specimen.

Colidotea rostrata Ben. Sea weed. Deep red.

ONIsCID
Porcellio levis Lat. Common inland under stones.

Philoscia richardsone Holmes and Gray.

(Contribution from the Zoological Department of Pomona College.)

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1918 Pomona College Journal of Entomology and Zoology, Vol. X, No. 3, September

A List of Some Additional Shrimp Like

Crustacea from Laguna Beach

All specimens were determined by the U. S. Nat. Museum.

Crago nigricauda Stimp. Common bottom shrimp. Dredged and also from the
sand flats at Balboa.

C. holmesi Rath. Dredged 10 to 15 f.

C. munitella Walker. Dredged 10 to 15 f.

One was mottled brown with bright red markings along the back.

Another has the whole body a dark slate color.

Another has slate bands and red center of the body.

Another has bands of slate and red alternating.

C. alba Holmes. White dotted with black. Dredged.

Spirontocaris palpator Owen. Dredged. Body streaked with brownish, legs bright
spotted. Another, appendages deep pink, body violet. Another body with a light
pink tinge.

S. picta Stimp. Dredged.

S. franciscana Schmitt. Plain pale reddish brown. Dredged.

S. carinata Holmes. Dredged 10 to 15 f. Large bright green shrimp.

Crangon dentipes Guerin. Claws greenish, body pale. Shore at low tide.

C. equidactylus Lock. In kelp holdfast at Salt Creek. Red cross lines in each
segment.

Hippolyte californiensis Holmes. Abundant on eel grass, Balboa Bay.

HERMIT CRABS
Paguristes ulreyi Schmitt. Large hermit crab dredged in 1917.

Holopagurus pilosus Holmes. Medium sized, rather free from long hairs, light
colored. Dredged.

Parapagurus minimus Holmes. These narrow little hermit crabs were found
living in the hollowed out bits of roots of eel grass. They were a dark red brown
in life. Dredged at from 10 to 15 f.

W. A. Hz.

(Contribution from the Zoological Department of Pomona College.)

3)

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1918 Pomona College Journal of Entomology and Zoology, Vol. X, No. 3, September

Some Amphipods Collected During the
Summer of 1916 at Laguna Beach

M. SHAW

A number of other specimens have been sent away for identification

LYSSIAN ASSID =

Nannonyx dissimilis Stout.

Ampelisca articulata Stout.

GAMMARIDZ&
Caliniphargus sulcus Stout.

Maera simile Stout.

TALITRIDE
Orchestoidea californiana Brandt.
Orchestia traskiana Stimp.
Hyallela azteca Sauss.
Allorchestes frequens Stout.

A. oculatus Stout.

PODOCERID

Dulchiella spinosa Stout.

PHOTID

Photis californica Stout.

AMTHITHOID
Amphithoe corallina Stout.

Acanthogrubia uncinata Stout.

(Contribution from the Zoological Department of Pomona College.)

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1918 Pomona College Journal of Entomology and Zoology, Vol. X, No. 2, June

Crabs Taken at Laguna Beach in the
Summer of 1916

H. H. NININGER
Drawings by John Coffman. Determinations by the U. S. Nat Museum.

While enjoying the pleasant surroundings at Laguna Beach in the summer of
1916, it was my pleasure to make a brief and partial survey of the crabs of that
region. In this paper it is intended to give a description of those species taken which
may be of use to students who, in the future, may choose to carry on this line of work.
The drawings are intended to represent accurately only the outline of form as viewed
from the dorsal side. No attempt is made to indicate pubescence (except in a few
cases )or irregularities of surface which would require shading.

Heterocrypta occidentalis Dana
This species which was reported by Prof. Hilton from Hermosa Beach in the
summer of 1915, was found in abundance directly off Laguna bathing beach in 12-20
fathoms of water. Fig. 1 represents an adult male.

Portunis xantusii (Stimpson)
These very interesting crabs were taken quite frequently in water of 10-15
fathoms. Fig. 2 is of an adult male.
Cancer gracilis Dana
Only the young of this species were taken; 5-10 fathoms of water. Fig. 3.
Cancer gibbosulus (De Horn)
Fig. 4 shows the only specimen taken, a young one.

Cancer productus Randall
The only specimen taken was a young one. Fig. 5 outlines the carapace. About
15 fathoms.
Cancer jordani Rathbun
Scores of these were taken by dredging. Fig. 6 shows an adult female. The
sexes are much alike. They are covered by a rather dense coat of somewhat flexible
hairs. The carapaces of the young vary greatly in color. Adults are generally
mottled with reddish brown on carapace and legs. Fig. 7 is of a young specimen.

Opisthopus transversus Rathbun
Though small, this is certainly one of our most beautiful species. The carapace
richly spotted with vermilion to deep red, is polished almost to pearly smoothness.
Only a few of these were obtained. Fig. 8 illustrates an adult. 10-20 fathoms.

Clythrocerus plana Rathbun

Though they could lay no claim to such beauty as the last named species, these
crabs surely received their full share of attention in the aquarium. ‘They persist in
carrying about upon their backs pieces of shell, pebbles, sticks, fragments of seaweed,
or entire shells with their living contents and seem much embarrassed without some
such covering. When placed in a glass dish where nothing else was available, one
seized a snail shell more than twice its own size and seemed perfectly content when
it had this firmly gripped upon its back. They are found in 15-20 fathoms of water
on gravel and shell beds. The two rear pairs of legs are peculiarly modified into

Pomona College, Claremont, California 39

upturned hooks for gripping objects carried on their backs. And the dorsal surface
of the carapace is reduced to a plane. Figs. 9 and 10.

Inachoides magdalenensis Rathbun

But few of these were taken. - They are not so much given to decoration as some:
others of the Spider Crabs. We found them in 12-15 fathoms of water. The
carapace and legs are set with numerous clumps of stiff hooked hairs. Figs. 11 and
12 represent male and female respectively.

Hemigrapsus oregonensis (Dana)

This species was found in abundance on the mud flats at Balboa. One specimen
was dredged at from 12-15 fathoms, probably carried out by the current from the
baye | hie. 13: ,

Podochela hemphilii (Lockington)

This species was fairly common among the masses of red seaweed dredged from
a depth of 10-20 fathoms. They are marked with reddish brown, but are always
so covered over with decorative fragments of seaweed that even their form is almost
indistinguishable. In the aquarivm these creatures were very interesting. Their
principal occupation was that of the decorating of themselves. Seizing a fragment
near one end, that end was thrust into the mouth and chewed for some time, then
transferred to some part of the carapace or legs, and by means of a peculiar and
oft repeated twisting movement of the hand it was so firmly fastened that it would
under almost all circumstances remain in the position in which it had been placed.
The chewing led us to suspect a cementing element in the saliva, but on examination
of the carapace it was found that each piece of seaweed was impaled on several of
the stiff recurved hairs which occur in clumps over the carapace and legs. Fig. 14
represents an adult female carrying eggs.

Epialtus bituberculatus Milne Edw.

Only two were taken during the summer. Fig. 15 is from a male specimen.

Cycloxanthops novemdentatus Lock

A better idea of the adult of this species can be obtained by consulting Dr.
Hilton’s paper in this journal for June, 1916. In Fig 16, a and b, show some of the
many very striking and deceptive variations which occur in the young. ‘The dotted
lines show the distribution of red pigment in the almost clear white carapaces of
these two specimens. It gives them a very unusual appearance for the usual color
is a uniform dull brown (sometimes purplish) with black claws. These crabs may
be found at medium low tide by tearing apart the rocks which have been cemented
together by marine worms, mollusks, etc. The carapace of an adult male measured
more than eight cm. in width.

Pachycheles holosericus Schmitt
Whatever respect Nature has for proportion and symmetry must have been laid
aside while this species was being formed. It is indeed hard to imagine a more
awkward looking pair of chelipeds than it possesses. Yet it seems to handle them with
some degree of success. They serve as an efhcient means of protection of the nature
of a lid for the cavities in sponges, stones, etc., in which these crabs are usually

Pomona College, Claremont, California 4]

found. ‘The chelipeds are very rough and the organic growth which covers them
renders them difficult to detect from the surroundings. Fig. 18 gives a good idea of
their form.
P. rudis Stimp.
This has the right claw large.

Herbstia parvifrons Rand
Only three, two adults and one young, of these were taken during the summet1,
but on a visit to the same beach in November I found them very numerous under
stones at medium low tide. All were young, however. Figs. 19 and 20 show the
adult male, and young.

Pelia clausa Rath.

Fig. 21 shows an adult with legs extended, a position in which it is seldom
found. ‘These sluggish creatures live under stones at low tide and if found at all
usually have their legs closely folded to them. ‘The entire animal is covered by a
dense coat of organic growth.

Lophopanopeus leucomanus Lock.

This species mentioned in Prof. Hilton’s paper is figured herewith. Fig. 22 is
an adult female. Fig. 23 is young. ‘This species, though generally of a uniform dull
brownish color, shows in the young many variations. ‘The carapace is often marked
with blackish or white patches of various patterns. Fig. 24 is illustrative of this.
Within the dotted lines was very dark pigment, while the lateral patches were almost
white.

P Pugettia dalli Rath.

Common in 5-20 fathoms. ‘This species exhibits great variation as is shown by
the accompanying figures. Figs. 25 and 26 are adult males. Figs. 27 and 28 are
adult females. They vary greatly in color and are generally decorated more or less.
Fig. 29 illustrates a specimen which was determined, by the U. S. Museum, as a
variety of this species. The carapace of P. dalli is always set with stiff recurved
hairs, of which there are two rows on the rostral spines and other scattered singly
or in groups over the carapace and legs.

Pugettia richit Dana
Fig. 30 represents an adult female. But few of these were taken.

Pinnixa longipes Lock.

This very odd looking little crab inhabits the sand tubes of Clymenella, which
are very abundant on the sand bars exposed at low tide near the outlet of Balboa
Bay. One or two of the crabs were found in almost every tube examined which con-
tained a worm. ‘The very peculiar form into which this species has developed, as
shown in Fig. 31, fits admirably for this commensal life.

Pinnixa littoralis Holmes
The only specimen was an imperfect one shown in Fig. 32. It was found clinging
to the outside of the slime tube of Cerianthus in Balboa Bay.

Cancer antennarius Stimp.
Fig. 33 represents a young specimen, 4 cm. in width. The hairiness of the carapace
is in marked contrast to the smooth condition of adults. Drawn by Esther Funk.

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1918 Pomona College Journal of Entomology and Zoology, Vol. X, No. 2, June

Connections Between Nucleus
and Cytoplasm

WILLIAM A. HILTON

While looking over some serial sections of a parasitic isopod, Grapsicephon of
the Family Bopyride, I was struck with the appearances which some of the glan-
dular cells presented. Clear connections of nucleus and cytoplasm were found which

resembled very closely the conditions described by Stauffacher ’10, and Knoll 710.

These gland cells are among the largest of the parasite’s body and the only ones
which presented this appearance. Not all of these gland cells looked alike.. There
were some that had a rather homogeneous appearance in the cytoplasm and even
less detail in the nucleus. The cytoplasm of these gave an acid reaction. Many
of the cells showed a decided reticulum which seemed to make up the framework of
both nucleus and cytoplasm, or at least this reticulum penetrated into the nucleus.
The chromatin granules are not very abundant in the nuclei of these cells, but in a
number of places chromatin is found in the cytoplasm attached to the reticulum.
Passing from the nucleus to the cytoplasm, or it may be from cytoplasm to nucleus,
are granules or masses of basichromatin. In many places these show partly in the
nucleus, partly in the cytoplasm. In almost every case the chromatin granlues seemed
to follow the lines of the reticulum in their migrations.

The figures of Danchakoff ’16, appear much like these preparations in places
and like the figures of Stauffacher. In the specimens of the former the chromatin
is migrating from the cell body to the nucleus. As these gland cells are apparently
differentiating for purposes of secretion and not for mytosis it seems probable that

the chromatin is leaving the nucleus.

REFERENCES

Danchakoff, Vera 1916

Studies on cell differentiation. Jour. morph. vol 27, No. 3.

Knoll, W. 1910
Betehen direkte, mit unseren heutigen Hilfsmitteln darstellbare Verbindungen

zwischen Kern und Cytoplasma? Zeit. wiss. zcol. xcv Bd. It. Heft.

Stauffacher, Heh. 1910

Beitrage zur Kenntnis der Kernstrukturen. Zeit. wiss. zool. xcv Bd. 1. Heft.

(Contribution from the Zoological Department of Pomona College)

Pomona College, Claremont, California Bip)

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EXPLANATION OF FIGURES

Cells from a grandular structure of the parasitic isopod, Grapsicephon. The
reticular network besides being found on the surface of the nuclei actually penetrates
them as well. The granules on the reticulum within and without the nuclei represent
chromatin. Ths net work in the specimens is of a lighter color than the chromatin;
it stains about the same shade as the larger part of the nucleus. The nucleus does
not seem to be entirely reticular in structure, but it is so dense and always stains so

uniformly that it is impossible to determine. The drawings are X800.

1918 Pomona College Journal of Entomology and Zoology, Vol. X, No. 3, September

Central Ganglia of Some Decapod
Crustacea

WILLIAM A. HILTON

The nervous system of a number of decapod Crustacea from Laguna Beach were
dissected and the chief parts sketched. The general distribution the ganglia is much
as has been described by Bouvier for similar genera.

All the drawings are enlarged three times. The determinations are from speci-
mens compared -with those determined by the U. S. Nat. Mus. at Washington.

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Journal of Entomology and Zoology

Fig. 1. Hippolysmata californica Stimp.

Fig. 2. Callianassa longimana Stimp.
Fig. 3. Crago nigricauda Stimp.

Fig. 4. Beteus longidactylus Lock.
Fig. 5. Eremita analoga Stimp.

Fig. 6. Pagurus samuelis Stimp.

Fig. 7. Petrolisthes eriomerus Stimp.
Fig. 8. Pugettia sp.

Fig. 9. Randallia ornata Rand.

Fig. 10. Epialtus productus Rand. Small specimen.

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Fig. 12. Xanthias taylori Stimp.

1918 Pomona College Journal of Entomology and Zoology, Vol. X, No. 4, December

Notes on the Central Nervous Systems
of Holothurians

WILLIAM A. HILTON

A number of attempts were made to stain the central nervous system of Stichopus
with methylene blue, but without success. Dissections were most successfully made
when the animals were fixed in hot mercuric chloride. Specimens injected were filled
with the fluid and the whole body was later immersed. Specimens with the body
distended were obtained in this way and the nerve trunks were easily followed
after the removal of the longitudinal muscle bands. Parts of the nerve trunks were
removed and sectioned.

Specimens of Leptosynapta were imbedded and sectioned whole and a Hoye young
of Stichopus were sectioned whole.

Very little difference was noted between radial and circumoral nerves at different
places. The general character of the nervous system was very much as found in other
echinoderms. The deep nerve bands were not well marked in many of the sections, but
groups of cells more or less joined with the superficial trunks were found without
difficulty.

In adult Stichopus the cells are fairly numerous out in the fibrous area of the
superficial band. The radial nerves show a bilateral division as there is often a
depression on the inner side which approaches the appearance of a cavity.

In my preparations the cell body is not very distinct from the nucleus. There
may be six or more layers of cells at the edge of the outer band. The nerve processes
consist of many fine strands running in through the fibrous area, but there seems to
be in addition to this a groundwork of material which may in large part be made
of fibers and fibrils whose identity could not be discovered.

In the younger specimens of Stichopus the fibers were more prominent and the
cells in the fibrous area were markedly fewer in numbers. The fibers for the most
part seem to run the long way of the nerve trunk. Especially were long strands
found in the circumoral ring, although fibers could be seen crossing in considerable
numbers as well. In the radial nerves the crossing and interweaving of the nerve
fibers as they show in cross section is very intricate.

Small nerve trunks were followed along the tubes of the water vascular system.
These were seen to have a similar but simpler structure than the radial nerves.

In Leptosynapta a very similar sort of nervous system was found, but the nerve
cells were larger and on the whole fewer in number. The deep nerve trunks were
but poorly represented.

The fibers from the basal cells show very clearly both in the superficial and the
deep nerves and the fibers cross in a complex manner at all levels. There are but few
cells scattered in the fibrous area and there is apparently but little ground substance.
The fibers stand out more clearly than in Stichopus. Possibly more fibers from the
outer margin cross near the inner. This may be due to the branching at the ends of
the fibers.

Fibers and fibrils are all about the same size in Stichopus and Leptosynapta. The
circumoral nerve ring seems thicker than the radial, but this may in part be due to
contraction. The fibers in the circumoral ring seem smaller than in the radial. In
all parts there are many crossings of fibers in the fibrous portions at all angles.

Pomona College, Claremont, California 67

Small cells at the bases of tentacles ae similar to the radial nerves in structure,
but with fewer more flattened cells.

Baudelot, E. REFERENCES
Etudes generales sur le systeme nerveux contrib. a |’ hist. du syst. nerv.
des Echinoderms. Arch. zool. exp. vol. i.

Delage et Herouard
Traite de zoologie concrete. Vol. 3, Les Echinodermes.

Hamann, O. 1883
Beitrage zur Histologie der Echinodermen. I Die Holothurien. Zeit. Wiss
Zool. vol. 39.

Krohn, A. 1841

Neber die anordnung des Nervensystems der Echiniden und Holothurien im
Allgemeinen. Muller Arch. Anat.

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Fig. 1 and 2. Drawings of cross sections of the radial nerve of Stichopus. A
little more than one-half of the section is shown. The smaller deep strand is shown
on the upper side. X 350.

Fig. 3 and 4. Sections through the radial nerves of a young Stichopus. About
one-half of the radial nerves are shown in cross section. X 350.

Fig. 5. Cross section of the radial nerve trunk of Leptosynapta. X 350.

(Contribution from the Zoological Department of Pomona College.)

Coelenterates from Laguna Beach

H. H. NININGER, A. M. BEAN AND OTHERS

Corymorpha palma Torrey. Found at several places on the sand flats near
Balboa and Anaheim bays.

Tubularia crocea Ag. Abundant on wharf and piles in Balboa bay.
The only jellyfish which we have had determined is Scrippsia pacifica Torrey, Det.
Torrey. From surface waters near shore.

Cribina xanthogrammica Brandt, Det. Torrey. The shore anemone is very
abundant and variable.

Epiactis prolifera Ver. Specimens of red anemones, brown anemones with red
stripes and brown anemones were found under rocks at low tide.

A small sand species was found on the sand flats at Anaheim Landing by W.
A. H. in September, 1917. We have not found any at Balboa or at Laguna which
seem to be this species.

Edwardsia sp. This was found very abundantly at Balboa bay and Anaheim
Landing, in the sand at low tide. W. A. H.

Cerianthus estuari Torrey. Possibly a small specimen collected at Balboa Bay
may have belonged to this species. W. A. H.

Cerianthus johnsoni Yorrey. Two specimens of this species were collected at
Balboa Bay by Nininger. The following is his account of the species:

“The anemone was taken from the muddy shore at low tide. In life the spread
of the tentacles was eight and a half inches. There was a folding in toward the
mouth of one or more of the tentacles almost all the time. Possibly they were carrying
food. In this the tentacles acted independently. When a particle was in the grasp
of the group of small central tentacles, the large tentacle or tentacles first involvd
returned to their former positions at once.

The tube was found to be imbedded in the mud to a depth of sixteen inches.
Near the bottom of the tube the anemone was fastened to it by means of a cementing
substance much like the inner layers of the tube.

The color of this specimen was pink. The color of another one was grayish with
the tentacles banded with pink.”

Living in or on the tube of one of these was an adult of the small crab Pinnixa
littoralis Holmes.

Telesto ambigua Nutting. These little alcyonarians are quite abundant at Laguna
Beach, on the under sides of stones.

Psammogorgia torreyt Nutting. Stems of this large branched alconarian were
dredged near Balboa in about twenty fathoms by A. M. Bean.

From low tide and from dredging near shore one or possibly two species of stony
corrals were collected.

Several small anemone-like forms were collected among alge and among _ the
roots of eel grass. One was a bright red with few tentacles. One had a light body
with blue tentacles.

(Contribution from the Zoological Department of Pomona College.)

Notes on Annelids Collected During 1917
at Laguna Beach

A number of sipunculids were collected but not as yet determined. There was
one large species found in the sand at Balboa and one small species found in the
sand and in a sponge. At Laguna in the roots of eel grass there were two medium
sized forms found, one with smooth gray skin, the other with rough brown skin, and
one small kind similar to the small one found at Balboa. In a worm colony of
Sabellaria a rough kind was found which seemed like one of the others.

SYLEID ZE

Trypanosyllis gemmipara Johnson. Specimens of this large flat syllid were a
light pink. Most were obtained by dredging off shore at a depth of from 10 to 15
fathoms. A few were collected from alge along shore.

Syllis elongata Johnson. One specimen determined by Hamilton. Others obtained
may be the same species.

A large number of other specimens are not yet determined.
APHRODITID£

Several specimens from holdfasts and from dredgings have not yet been deter-
mined.

AMPHINOMID-E

Erythoe californica Johnson. Under stones.

Euphrosyne aurantiaca Johnson. A number of these short yellow worms were
obtained from holdfasts.

POLYNOID =

Halosydna insignis Baird. A large number of these collected among mussels and
under stones.

H. pulchra Johnson. Some of these found on Stichopus. A number of other
specimens have been sent away for determination, including some from the sand flats
of Balboa and from among hydroids.

PHYLLODOCID®

Phyllodoce ferruginea Moore. Under stones at Laguna Beach.

P. medipapillata Moore. This was the largest of the family found at Laguna.
Among holdfasts and in the tube masses of Sabellaria californica Fewk.

A number of other species remain to be determined.

NEREID

Nereis agassizi Ehl. Very common along shore and in holdfasts.

N. vexillosa Grube. A few of these were determined.

N. procera Ehl. Some of these found with the others of the family.

N. virens Sars. A few specimens, smaller specimens than those reported by
Hamilton some years ago.

A number of other species will probably be added from the undetermined ma-
terial.
NEPHTHYDID

Nephthys caca Fab. Low tide, Laguna Beach. One specimen.

Pomona College, Claremont, California 61

LEODICID AL

Marphysa californica Moore. A large and a smaller specimen dredged just off
shore.
M. stylobranchiata Moore. Collected on the sand flats, Balboa.

Dioparta californica Moore. Dredged off shore at Laguna Beach. Also found on
the mud flats at Balboa. The tube of the dredged form is of shell fragments, that from
Balboa is made of sand and sticks.

Several other species of the family were collected.
LUMBRINERID-®

Lumbrinereis erecta Moore. Holdfasts, eel grass. Among the tubes of Sabellaria
californica.

Aracoda semimaculata Moore. Among mussels.

A number of undetermined forms may belong to this family.

GLY CERIDE

Glycera rugosa Johnson. Low tide.
Glycera nana Johnson. Quite a large specimen found at low tide.
ARICIID 4

Nainereis longa Moore. Found at low tide.
N. robusta Moore. Found at low tide.
Scolopus elongata Johnson. Balboa sand.

Several others not yet determined.
CIRRATULID

Cerratulus luxuriosus Moore. Low tide. Bright red.

C. spirobranchus Moore. Eel grass roots.
TEREBELLID

Terebella california Moore. This seems to be the most abundant of the family
at Laguna. In eel grass roots. Red gills, yellow fillaments.

Amphitrite spiralis Johnson. Red-brown, body lighter. Low tide. Laguna.
CAPITELLID

Specimens which seemed to belong to this family were found at Balboa.
CHLORH MID ©

Trophonia inflata Tred. Under stones.
OPHELLID

Ophelina magna Tred. Mostly dredged. Possibly a young of this was collected
at Balboa.

O. mucronata Tred. Dredged.

AMPHICTENID4£

Pectinaria brevicoma Johnson. Dredged in 10 fathoms off shore. A small but
perfect specimen seems to differ from Johnson’s descriptions slightly. A number of
perfect tubes were obtained.
MALDANID 4

Clymenella rubrocincta Johnson. These were abundant on the mud flats exposed
at low tide, both at Balboa Bay and Anaheim Landing. Hamilton reported them
from eel grass roots near Laguna. I have found some in similar places.

62 Journal of Entomology and Zoology

AMMOCHARIDE

Ammochares occidentalis Johnson. Several specimens were found among the roots
of eel grass at Laguna last Summer. The tube of one specimen at least was made of
overlapping but regular fragments of shell. Another specimen was dredged with a
similar regular tube of shell fragments.

SABELLID/

A number of species were collected, but none as yet determined. Sabella elegans
Bush seems to be in the collection. Most specimens were taken from holdfasts or
dredged off shore. One was found in the neighborhood of a sabellarian worm colony
and some were under rock ledges.

SERPULID ZZ

But few of these were collected.
Serpula colombiana Johnson was the only one determined.

HERMELLID

Sabellaria californica Fewkes. Enormous colonies of this species are found along
the shores in many places.

S. cementarium Moore. This species is usually found farther out and although
common is usually found in much smaller numbers in more isolated tubes.
In the lakes back from Laguna Beach and in the streams, a leech is very common.

Specimens sent to the U. S. Nat. Museum were determined as Erpsodella punctata
Leidy. W. A. H.

(Contribution from the Zoological Department of Pomona College.)

Some Chitons Collected During the
Summer of 1917

A number of specimens were sent to Dr. S. S. Berry and determined as follows:

Leptochiton cf. rugatus Cpr. Small white. Dredged 10 fathoms.

Callistochiton palmulatus Cpr. Dredged 10 fathoms. Ends ribbed.

Callistochiton cf. decoratus Cpr. Flat margins of valves rough. 1.15 by 9 mm.
Low tide.

Mophalia juy. cf. acuta Cpr. Broad margins, speckled brown irregular spots.
Dredged 10 fathoms.

M. mucosa Gould. Low tide.

Ishnochiton (Lepidozona) clathratus Rve. Dredged and low tide.
I. (Stenoplax) conspicuus Cpr. Large species, low tide.

Cyanoplax hartavegii Cpr. Common flat circular form. Low tide.

Nuttallina cf. fluxa Cpr. Low tide.

(Contribution from the Zoological Department of Pomona College.)

A Cumacean from Laguna Beach

H. H. NININGER

Specimens of a little red-lined cumacean were collected by dredging in about
fifteen fathoms of water just off shore, especially near Emerald Bay. ‘These were

determined by the U. S. Nat. Museum to be Colurostylis occidentalis Calman.

A Parasitic Copepod Found at
Laguna Beach

A. M. BEAN AND HARRY STAPLES

Parasitic Isopod

Prof. A. M. Bean obtained the copepod shown in side view, enlarged four times,
from the gills of Mola mola. The specimen was determined by the U. S. Nat. Mus.
at Washington, to be Cecrops lateillii Wilson. The drawing is by Harry Staples.

Notes on the Central Nervous Systems
of Holothurians

WILLIAM A. HILTON

A number of attempts were made to stain the central nervous system of Stichopus
with methylene blue, but without success. Dissections were most successfully made
when the animals were fixed in hot mercuric chloride. Specimens injected were filled
with the fluid and the whole body was later immersed. Specimens with the body
distended were obtained in this way and the nerve trunks were easily followed
after the removal of the longitudinal muscle bands. Parts of the nerve trunks were
removed and sectioned.

Specimens of Lefptosynapta were imbedded and sectioned whole and a few young
of Stichopus were sectioned whole.

Very little difference was noted between radial and circumoral nerves at different
places. The general character of the nervous system was very much as found in other
echinoderms. ‘The deep nerve bands were not well marked in many of the sections, but
groups of cells more or less joined with the superficial trunks were found without
difficulty.

In adult Stichopus the cells are fairly numerous out in the fibrous area of the
superficial band. The radial nerves show a bilateral division as there is often a
depression on the inner side which approaches the appearance of a cavity.

In my preparations the cell body is not very distinct from the nucleus. There
may be six or more layers of cells at the edge of the outer band. The nerve processes
consist of many fine strands running in through the fibrous area, but there seems to
be in addition to this a groundwork of material which may in large part be made
of fibers and fibrils whose identity could not be discovered.

In the younger specimens of Stichopus the fibers were more prominent and the
cells in the fibrous area were markedly fewer in numbers. ‘The fibers for the most
part seem to run the long way of the nerve trunk. Especially were long strands
found in the circumoral ring, although fibers could be seen crossing in considerable
numbers as well. In the radial nerves the crossing and interweaving of the nerve
fibers as they show in cross section is very intricate.

Small nerve trunks were followed along the tubes of the water vascular system.
These were seen to have a similar but simpler structure than the radial nerves.

In Leptosynapta a very similar sort of nervous system was found, but the nerve
cells were larger and on the whole fewer in number. The deep nerve trunks were
but poorly represented.

The fibers from the basal cells show very clearly both in the superficial and the
deep nerves and the fibers cross in a complex manner at all levels. There are but few
cells scattered in the fibrous area and there is apparently but little ground substance.
The fibers stand out more clearly than in Stichopus. Possibly more fibers from the
outer margin cross near the inner. This may be due to the branching at the ends of
the fibers.

Fibers and fibrils are all about the same size in Stichopus and Leptosynapta. The
circumoral nerve ring seems thicker than the radial, but this may in part be due to
contraction. ‘The fibers in the circumoral ring seem smaller than in the radial. In
all parts there are many crossings of fibers in the fibrous portions at all angles.

Pomona College, Claremont, California 67

Small cells at the bases of tentacles ae similar to the radial nerves in structure,
but with fewer more flattened cells.

Baudelot, E. REFERENCES
Etudes generales sur le systeme nerveux contrib. a |’ hist. du syst. nervy.
des Echinoderms. Arch. zool. exp. vol. 1.

Delage et Herouard
Traite de zoologie concrete. Vol. 3, Les Echinodermes.

Hamann, O. 1883
Beitrage zur Histologie der Echinodermen. I Die Holothurien. Zeit. Wiss
Zool. vol. 39.

Krohn, A. 1841

Neber die anordnung des Nervensystems der Echiniden und Holothurien im
Allgemeinen. Muller Arch. Anat.

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Central New System Holothurians

Fig. 1 and 2. Drawings of cross sections of the radial nerve of Stichopus. A
little more than one-half of the section is shown. ‘The smaller deep strand is shown
on the upper side. X 350.

Fig. 3 and 4. Sections through the radial nerves of a young Stichopus. About
one-half of the radial nerves are shown in cross section. X 350.

Fig. 5. Cross section of the radial nerve trunk of Leptosynapta. X 350.

(Contribution from the Zoological Department of Pomona College.)

Notes on Flat Worms at Laguna Beach

W. L. GROW, DARSIE L. DARSIE

We have not had any of these determined as yet. We should be glad to collect
specimens for anyone who would determine them for us.

One or two kinds of tricladids are found under stones. Most of these are brown
or gray, some are pink and some almost red.

At least one species of polycladid is found commonly under stones. ‘They are
nearly circular in outline and may possibly belong to the genus Leptoplana.

Another species nearly circular in outline was collected by Mr. Grow in 1916.

Others were collected in 1917. They were black with narrow longitudinal red lines.

A large grey species was collected by Mr. Darsie in 1917. Two were obtained
in a tide pool near Boat Canon. They swam by means of rapid undulating move-
ments of the frilled edges of the body.

(Contribution from the Zoological Department of Pomona College.)

BRANCHIOSTOMA CALIFORNIENSE GILL

Specimens of Branchiostoma have been dredged at Laguna Beach for the past
three years. Prof. A. M. Bean first brought them in from just beyond the Laboratory
in from 10 to 15 fathoms of water. Almost every haul near this place in the coarse

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vough sand and shell debris which is abundant there. The drawing is by Charlotte
Johnson.

Further Observations on the Mountain

Sheep of the San Gabriel Range

WILLIAM A. HILTON

On the 15th of December, 1917, I had the good fortune to come upon quite a
number of the mountain sheep which range over some of the highest and roughest
elevations of these mountains. Occasionally one or several sheep have been seen by
those who have been climbing over Ontario, Cucamonga or Telegraph peaks. As a
rule the animals are very shy and give nothing more than a glimpse. The exact
identity of these animals and their total number remains unknown. It has been
suggested that they are Ovis canadensis nelsoni C. H. M. These that I saw are much
like the specimens in the college museum which were collected in Lower California,
but the horns of the male seemed more massive in the San Gabriel specimens so far
as I could keep the size and proportions in mind. Just how many Mountain sheep
there are in this range we have no clear way of telling. I believe that the rather
large band which I saw is not all of them. ‘Those seen by me on December 15th
were within a hundred feet from the top of the ridge of Ontario peak. They were in
the dense forest which grows near the top of the mountain on the San Antonio canon
side. As we ascended the trail we came in sight of seven or eight adult animals
partly hidden among the bushes. They were not farther than one hundred and fifty
feet away and did not at first see us or take alarm, so it was possible to watch them
for some time. When a large ram caught sight of us he suddenly stopped walking
about and eyed our every movement, then when we came a little nearer the whole
band ran to the top of the ridge and it was possible to count them. There were
twenty-four in all, at least six large rams, six females and six half grown young.

The exact number of each was impossible to make out.

Scorpions from the Claremont-Laguna
Region

The two species of scorpions which have been found in the Claremont Laguna
Region are shown in the accompanying photograph by L. Cooper. The smaller,
Anuroctonus pharodactylus Wood, is found throughout the region except in the higher
mountains. The larger Hardurus hirsutus Wood, is more of a desert species and

seems to be confined to the more desert portions of the region.

Blepharipoda occidentalis Randall.
Specimen from Laguna Beach. Drawing by J. Caldwell.

Journal of Entomology and Zoology

Serolis carinata Lock. Drawing by Staples.

Notes on Sponges at Laguna Beach

W. L. GROW

During two summers Mr. Grow collected and studied sponges at Laguna Beach.
We have not been able to get any of the local forms satisfactorily determined, and
the notes here given are simply suggestions. We shall be glad to turn over an
abundance of material to any one who wishes to work on the group.

At least three kinds of simple calcareous sponges were found under rocks and
on kelp holdfasts.

Leucosolenia sp.? is found at times under rocks at low tide. The sponge is about
10 to 12mm high and narrower at the base, white, slender, not very abundant.

At least two species of Sycon or Grantia were found under stones and on hold-
fasts. Those from deeper water have longer spicules.

The most conspicuous sponge at Laguna is found in masses under rock ledges.
It is often quite large and irregular in outline. It is sometimes divided into many
partially separate colonies and again it may occur in a smooth mass. It is pure white.
Possibly it belongs to the genus Petrostoma. In its cavities several animals often
retreat, small crabs of the genus Pachygrapsis and young and adults of the crab
Pachycheles rudis Stimp. and the isopod Cirolana harfordi var. spongicola Staf.

A species of Clathrina occurs at Laguna Beach now and then. During some win-
ters this stalked white, mushroom-like species is found among tufts of Bryozoa.

The so-called sulphur sponge is common under stones and rock ledges. ‘There
is no differentiation into individuals, the oscula are scattered over the surface, which
may be very irregular. Great masses of these yellow sponges are often found. The
only animal associated with them seems to be the limpet Tylodina fungina Gab.

Pink encrusting sponge. Found on shells, seaweed, etc. Pink-white, smooth, few
openings evident. Calcareous spicules triaxons and monaxons. It is rather thin.

White encrusting sponge (I) White, fused at the base, but with distinct, erect
individuals each with osculum. Often covered with Bryozoa. ‘Triaxon spicules and
spongin fibers present. Under ledges of rock.

White encrusting sponge (II). Soft white, but tenaceous. Peels off from shells
and twigs. Has only triaxon spicules. Found on rock surfaces, seaweed, kelp hold-
fasts.

Red sponge. Bright red, feels spongy. Encrusts a base and sends out tufts which
fuse. Triaxon spicules. Spongin fibers, rather broad cavities. On seaweeds and
under rocks.

Yellow sponge. From a yellow to an ocher. Never the color or texture of the
sulphur sponge. Semi-encrusting with some erect irregular portions which may fuse
again with the parent mass. Parts may wind and twist among bryozoan masses.
Monaxon spicules, granular structure. Surfaces of rocks, rock ledges and seaweeds.

White dermal sponge. Soft spongy, greyish white. Fibers or strands easily seen
by the naked eye. Grows under ledges. Composed of spongin fibers. Some dry bits
cast up on the shore seem to be of as good quality as a first class bath sponge.

7 A. Pomona College, Claremont, California

Massive pink-white sponge. These are calcareous in part, pink on the surface
and very dense. Channels not well marked. Large masses under rock ledges.

In addition to the above there is a very bright red sponge which is found under
stones.

At Balboa bay among some oysters there is a large irregular pyramidal dermal
sponge of a dark brown color.

(Contribution from the Zoological Department of Pomona College.)

The Central Nervous System of a Long-
Armed Serpent Star

WILLIAM A. HILTON

The specimens were found in the sand of Balboa Bay. A specimen was deter-
mined by Dr. Clark as probably Amphiodia barbare Lyman. When obtained these
creatures move their arms very vigorously. When in the sand they bury themselves
very effectively. Out of the sand the arms are not moved to so good purpose, and
they become tangled.

The great length of the arms and the smallness of the disc made these interesting
objects for study. Sections were made of the arms close to the disc and at their tips.
In the specimen from which the sketches were made, the arm sectioned was 250 mm
long and the disc 10 mm in diameter. The arms do not taper much and the radial
nerve is about the same size for some distance. At about one centimeter from the
tip of the arm the diameter of the nerve trunk is much less to correspond to the
smaller diameter of the arm. At the very tip of the arm the nerve cord is of course
very much reduced, but it is larger in proportion than it was at other parts of the
arm. (Contribution from the Zoological Department of Pomona College.)

Fig. 1. Cross section of the radial nerve of Amphiodia, section taken near the
disc. X350. Aboral side up.

Fig. 2. Section across the radial nerve near the tip of the arm. Aboral side up.
X350.

Fig. 3. and Fig. 4. Sections across the arm at the base and at the tip, showing the
outline of the arm with the nerve trunk within. Aboral side up. X70.

Dolichoglossus Pusillus Ritter

WILLIAM A. HILTON

The writer first discovered the occurrence of Dolichoglossus in the sand flats at
Balboa Bay, in August, 1917. In one little cove they were found to be very abundant.
Large numbers of old burrows were evident in many places and the castings in some
places gave clear indications of many animals. In certain places they were the most
abundant animals. Specimens were collected once or twice a month for several
months, and a large number of tubes were examined for embryos. Eggs and young
of various stages were obtained at almost any time, so it seems quite possible that
there is no absolute breeding season. Further observations may settle this point a

little later. The sand cases or burrows are so delicate that they are easily broken,

yet the best way to collect the eggs and adults seems to fix large numbers of the animals
within the cases and then later open the sand tubes and remove the specimens. In
some cases the living animals were taken within the tubes and later removed at the
laboratory.

Other places where Dolicoglossus occurred were found to be on the mud flats the
other side of the bay from the first situation and in fewer numbers at Anaheim Landing.
Later a few were obtained under eel grass not far from the Laboratory at Laguna

Beach.

(Contribution from the Zoological Department of Pomona College)

Pycnogonids Collected During the Sum-
menot V9l7 at lacuna Beach

WILLIAM A. HILTON

During the summer no particular attention was given to the collection of these
creatures, but all that were found were saved. Some places where they were known
to be abundant were not searched at all. In consequence of this, the larger forms
were especially obtained, especially those found under stones. ‘There are a number
of new locality records. Something over 200 specimens were collected.

Pallene californiensis Hall. One specimen Aug. 19.

Lecythorhynchus marginatus Cole. One with eggs, date? Some young, in all 38,
most were found among stones, among muscles and a few in red alge.

Ammothella tuberculata Cole. In August 8 specimens. No eggs. Sept. 1, 7 under
stones. Sept. 13, 2 specimens. Sept. 16, 8 of which three had eggs. In all 25.

A, bi-unguiculata var. californica Hall. During July 4+ specimens, one with eggs.
August, 11 with eggs, 21 without. September, 15 with eggs, 13 without. In all, 64.

Ammothella spinossissina Hall. August, 2 with eggs, 16 others. September, 1
with eggs, 2 without. September 16, 3 without eggs. These last were found in among
the worm cases of Sabellaria californica.

Ammoththella spinifera Cole. Five specimens with eggs under stones during
August, one specimen without eggs.

Tanystylum intermedium Cole. July, six specimens in Bryozoa. August, 17, three
among alcyonarian colony. No eggs. August, 19, under stones, one with eggs, five
others. September 1, 14 without eggs, one with. Stones.

T. orbiculare Wilson. One specimen with eggs under stone. August. Eight
among red algx, no eggs. September 1, 17 without eggs, four with eggs under stones.

Clotenia occidentalis Cole. One specimen with eggs and young dredged, Aug. 27.
One specimen without eggs.

Anoplodactylus californicus Hall. One without eggs dredged August 27. One
under a stone, August. No eggs.

Phoxichilidium femoratum Cole. Sept. 1st, one immature.

Halosoma viridentestinalis Cole. Among Bryozoa and under stones. Aug. 19, two
with eggs, four others. Sept. 1, one with eggs, five others.

Eurydice spinosa Hilton. One with eggs, August 17. Locality uncertain. Four
with eggs, one without, Sept. 17, 1917, from holdfast.

This species was described from a specimen collected at Laguna Beach in Sep-
tember, 1915. Judging from the number of specimens obtained from the holdfast,
the species seems to be from deeper water.

Pycnogonum sternsi Ives. Sept. 2, four young under stones. Sept. 3, one young.

Nymphon sp.? Sept. 1, one species of what apparently belongs to this genus was
found, a single specimen well inshore.

Species living among colonies of Sabillaria californica were:

Ammothella bi-unguiculata var. californica Hall. A. spinossima Hall.

Deep water forms seem to be: C. occidentalis, A californicus and E. spinosa.

(Contribution from the Zoological Department of Pomona College)

Some Echinoderms of Laguna Beach

In the summer of 1915, Prof. A. M. Bean dredged an injured specimen of heart
urchin. It seems to be the same as the one labeled Lovena cordiformis Gray, in the

museum of the Scripps Institution at La Jolla.

Since 1915 we have dredged large numbers of the little urchin, Lytechinus
anamesus TH. L1G.) et El. |G:

The sand dollar Dendraster excentricus Esch. has been dredged every summer,
especially off Emerald Bay. It is also very common in places on the mud flats at
Balboa and Anaheim Landing.

The starfish Ludia foliata Grub. has been obtained but once. The starfish Hen-
ricia letinscula Fisher Det. H. L. C., whose central parts were yellow and whose arms
had purple tips, has been collected but once, by Mr. Grow in 1916.

But one specimen of the basket star has been taken. It was determined for us by
Dr. H. L. Clark. It is Gorgonocephalus eucnemis M. & T.

The following serpent stars have been found every summer at low tide: Ophio-
derma panamensis. Lutk. Det. H.L.C. is the largest species. Ophioplocus esmarki
Lyman, Det. H.L.C. Usually unicolored. Ophionereis annulata Le Conte. Compared
with Fisher’s determined specimens. Ophiothrix spiculata Le Conte. This variable
and beautiful form is found in many places, among mussel beds, in holdfasts and

dredged.

Ophiocryptus maculosus Clark. Det. H. L. Clark. These have been collected from
holdfasts.

During the summer of 1917 a curious long-armed serpent star was collected.
It was determined for us by Dr. H. L. Clark, but as the disc fell off the determination
is not quite sure. “I am cataloging it as dmphiodia barbare Lyman, known only from
Santa Barbara. But the arms of this specimen are much longer than the typical
barbare, so it may be urtica. One must have the disc to be sure.”

We hope to collect more specimens of this another summer. The holothurians so
far are as follows:

The common Stichopus californicus Stimp. and the large red dredged S. johnsoni
Heel.

Several specimens of a brown Thyone have been obtained. Several red with black
tentacles which Dr. Clark thinks may belong to the genus Cucumaria. Another speci-
men sent in 1917 to Dr. Clark, “It is apparently Cucumaria curota Cowles.”

In 1914 a single specimen of Psolus Sp. was obtained.

White and pink specimens Dr. Clark has determined as Leptosynapta inherens
O.F.M.

Contribution from the Zoological Department of Pomona College)
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A List of Odonata Chiefly from Laguna
Beach

DARSIE L. DARSIE

The determinations were made for us by Dr. Munz.

DRAGON FLIES

Libellula saturata Uhl. Sub. Sp. croceipennis Selys. Found at Laguna and Clare-
mont. Common large form with red-brown body and basal two-thirds of wings red-
brown.

Plathemis lydia Durury. Large. Wings banded near body and near center.
Female has slighter bands. Common Claremont and Laguna.

Sympetrum illotum Hagen. Medium size. Tinge of brown on clear wings, dark
brown body in dry specimen. Laguna Beach.

S. corruptum Hagen. Medium size. Clear wings, light body. Common Clare-
mont and Laguna.

Aeshna multicolor Hagen. Large. Clear wings, colored body. Laguna.
Erythemis simplicicollis Say. S$. sp. collocata Hagen. Medium size. Clear
wings, blue body. Laguna Beach.

Tramea lacerata Hagen. Chocolate brown marks at base of hind wings. Laguna
Beach.

Anax walsinghami MacLachlan. Clear wings. Very large. Our largest species.
Laguna Beach.

DAMSEL FLIES
Heterina americana Fab. Base of wings bright red. Claremont and Laguna.
Argia virida Hagen. Male blue body. Clear wings. Claremont and Laguna.
Emallagma cyathigerum? Carpentier.
Calaenura denticollis Burmeister. Very small. Claremont.

Amphiagrion saucium Bur. Red body. Very small.

(Contribution from the Zoological Department of Pomona College)

A List of Small Mammals from the
Claremont-Laguna Region

HALSTEAD C. WHITE

The mammals were all but several bats collected by H. G. White. All deter-
minations are by the Museum of Vertebrate Zoology of the University of California.

Myotis evotis Allen. Long-eared bat. Claremont.
Nycteris borealis teliotis Allen. Western Red Bat. Claremont.

Scapanus latimanus occultus Grinnell and Swarth. Southern California mole.
Claremont and Webber’s camp, San Gabriel Canyon.

Reithrodontomys megalotis longicauda Baird. Long-tailed Harvest Mouse. Glen
Ranch. Santa Ana River.

Peromyscus maniculatus gambeli Baird. Gambel White-footed Mouse. Santa
Ana River. Pomona Hills.

P. californicus insignis Rhoads. Southern Parasitic Mouse. Glen Ranch. Clare-
mont. Laguna Beach.

P. eremicus fraterculus Miller. Dulzura white-footed mouse. Claremont. La-
guna Beach.

Neotoma fuscipes macrotis Thomas. Long-eared Wood Rat. Laguna Beach.
N. intermedia intermedia Rhoads. Intermediate Wood-rat.

Microtus californicus californicus Peale. California Meadow Mouse. Coble’s
canon. Santa Ana River, near Corona.

Mus musculus Lin. At Laguna Beach, not far from houses.

Perognathus californicus femoralis Allen. Dulzura Pocket Mouse. Glen Ranch.
Laguna Beach.

Tomomys bottae pallescens Rhoads. San Diego Pocket Gopher. Glen Ranch.

(Contribution from the Zoological Department of Pomona College)
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