398 PROCEEDINGS^ OF THE NATIONAL MUSEUM

NO.1312.

SYNOPSIS OF THE VENEIiW.E—D

ALL.

399

shape.

They

are usually chalkyandof a<^raytint.

A

variety txinida (but not Tajh'x faiiiida Sowerhy, ₁₈₅₃₎ has been proposed b\" Carpen-

ter, hut itdoes not dift'er

from

(yrbdhi sufficiently to name, though it

wasi-enamed Chlone conradl

by Homer

in 1867.

PAPHIA STAMINEA

var.

SULCULOSA

Dall, 1902.

San lo-naoio lagoon, west shore of

Lower

California.

This ditlers from theordinary forms of the species in having the concentric sculpture obsolete, theribs fewer and stronger,and behind the middle of the shell separated b}-equal oreven wider unsculptuied channels or interspaces.

The

color is pure white, and the only speci-

mens

ofthis varietv I have seen

were

collected

hy

Henrj- Hemphill.

PAPHIA (PROTOTHACA) THACA

Molina, 1782.

Ba}' of

Panama

to Valparaiso, Chile.

When

well developed this

form

is very striking on account of the discrepant sculpture on the ditierent parts of the disk, a featurewhich

exists,

more

orless distinctly, in all the species of thisgroup.

The young

are sometimes prettily painted with purple brown. It is a notable species foreconomic purposes in Chile,

where

it is largely used f()r food,

and

called taca. It

was

first described

by

Molina as ChaiiKi tJutcaand referredto Verms

by

Gmelin. Itis the Y. domheli Lamarck,1818; T^ chllenstsSowerby,1835; Y. ignohtlls Philippi,1844;

but not Veivus <y)himh{e7isisSowerby, as stated l)yDeshayes in 1853.

PAPHIA (CALLITHACA) TENERRIMA

Carpenter 1856.

Victoria. British Columbia, and south to San Quentin Bay,

Lower

California.

This magniticentshell is

markedh'

distinct in its characters from, and

much

larger than an}^of the otherwestcoast species of thegenus.

It seems to be rather rare.

When

Dr.

Gould

described his Yeini-^

rigida (not Vermes rigida Dillw3'n, 1817) he included representatives of

two

species.

One

of these

was Paphia

staminea Conrad, and the other the presentspecies, whichw'as discriminated

by

Dr. Carpenter,

LIOCYMA BECKII

Dall, 1870.

Plover Bay, Eastern Siberia, near Bering Strait, and southwardto Unalaska, eastward to

Kadiak

and Prince William Sound, in > to 00 fathoms. Also North Japan.

Shell subtrigoiial, inflated,withyellow or greenishyeriostracuni,and irregular concentricsulci. Leng-th of largest individual, 18.0: diame- ter, 8.5 nmi.

LIOCYMA

VIRIDIS Dall, 1871.

PointBarrow, ArcticOcean, south through Bering ^Strait and Sea

to the

Okhotsk

Sea, the Aleutian Islands, and eastward to

Kadiak

Island, Alaska, in 4 to 70 fathoms. Also North ^Japan.

400 PROCEEDINGS OF THE NATIONAL MUSEUM.

^vouxxvi.

Shell oval, quite inequilateral,

when

fresh ofanolive-green or rich olive-l)rown color, l>leaching-on thebeachto

cream

color, withregular, ratherdistant concentric sulci; subcompressed, sometime almost ros- trate behind.

Maximum

length, 38.0; diameter, 13.5

mm.

The

3^oiuigare ver}" like the adult Z. JluctuosaGould, ofthe boreal Atlantic. ])uthave a deeperpallial sinus.

LIOCYMA SCAMMONI

Dall, 1871.

Port Simpson, BritishColumbia,

Scammon.

Brown,

dark, solid, with heavy hinge and strong, prominent liga- ment.

The umbones

are

more

central

and

the pallial sinus

more

shallow than in

any

otherspecies.

Maximum

length, 24.0; diameter, 11..5

mm.

VENERUPIS LAMELLIFERA

Conrad, 1837.

Farallones Islands, oft" San Francisco Bay, and soutli to

Lower

California.

Thisver}^irregularspecieshas obsoleteradial and oftenverystrong, distant, concentric lamellae, though under favorable conditions, espe- cially in adolescent specimens, the lamelh\?

may

be thin and sharp.

The young

are brightlycolored, the adults dull and earthy, though toward the southern extreme of its range the shell becomes

more

porcellanous. It

was

described as Yerius JaiiieUlfera

by

Conrad, and PetricolacordlerlDeshayes,1839, is synonymous. It hasbeen gener- ally

known

as Rupellarialamellifera., asdetermined

by

Carpenter.

VENERUPIS FOLIACEA

Deshayes, 1853.

Cape

St. Lucas, the Gulf of California, and southward to Acapulco and the

Bay

of

Panama.

A

^{short and} foliaceous species,

more

or less stained with purple.

Ta2JessquamosaCarpenter, _1857,

from

Mazatlan, isthe nepionic

young

of this species. Venerupis jpaupercula Deshayes, 1853, ^if nnilly

from

Mazatlan, is perhaps identical, and Venustroglodytes

Morch,

1861, ^is certainly synonymous.

VENERUPIS OBLONGA

^Sowerby, 1834.

Bay

of

Panama

to Payta, Peru.

Yenrriiplsfim'brlataSowerby,1853,isprol)ably

synonymous;

T. ellip- ticaand Y. solidaSowerby,1831, ])elong inthe genus Petricola,

where

Sowerby

originallyplaced them, and notin Venerupis, to

which

they w-ere referred

by

Deshayes.

The

relationsof

V oUonga

to V.foUacea are in need of elucidation.

K0.1312.

SYNOPSIS OF THE YEN

ETUI).

E-B

^ALL.

⁴⁰¹ PSEPHIDIA LORDI

^{Baird, 1863.}

Port^Etches,PrinceAVilliam Sound, Alaska,and southward ^{to Cata-}

linaIsland. California, ⁱⁿ 4^to 15 fathoms.

White, pale green, or straw color, quite tri.uonul and ])luinp. often containing-the nepionicyoung.

PSEPHIDIA OVALIS

Dall, 1902.

Pril)ilof Islands, Bering Sea, the eastern Aleutians, and the main coast eastward and southward ^to

San

Diego, California, in H to 20 fathoms.

Yellowish white, ^oval, su])compressed, and attaining a largei- size than P. ^lordl.

''nephU

t,minyaUs'' Carpenter. 1S(U, ^is the nepionic

young

^of

Petricola. as determined

from

the type ^specimens.

The name

has often been mistakenly ^{appliedto P. ovalix,}and thelatter hasalso])een

mistaken ^{for P. lordi in} the absence of ^figures or typically

named

specimens.

A

^speciesof P.^ephldhi quite near^to P. ^{ovalix occurs in} the Pleistocene terraces ^of Volcano Bay, ^Yesso. Japan,

where

speci-

mens

were ^collected

by

Pumpelly.

GEMMA GEMMA

^{Totten, 1834.}

Shores of San ^Francisco Bay, ^introduced with '-seed" oysters

from

Chesapeake

Bay

about ^1SH9.

The form

^{obtained is the variety}

pnrpw^ea

Lea.

For synonymy,

etc., see Atlantic ^{list. It is} not yetcertain that the ^{species is estab-} lished on the Pacificcoast.