Proceedings of the United States National Museum

PKOCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 291

NOTE

OIV

EIVDOTIIY^RA

ORIVATA.

By

C.A.

WHITE.

Among

thefossilsobtained

by

Prof. O.St.

John

fromthe Carbonifer- ous strata ofthe region of the T6ton Mountains,

southward

from the Yellowstone National Park,are

some

fragmentsofa darksiliciouslime- stone,adheringtotheweatheredsurfacesof

which

are

some

smallglob- ular foraminifera. ISTone of

them

are in

an

entirely satisfactory con- ditionof preservation,buttheir internal structure isverywell shown.

in

some

cases.

Samples

ofthese objects

have

been submitted to Mr.

Henry

B.Brady,F.E.S.,

whose

laborswith theforaminifera are so well

known. He

mentionsinreply thedifficultyofbeingabsolutely sure in thedeterminationofweathered specimens, butstillthinks,without

any

doubt, they are samples of Endothyra ornata Brady. (See Brady's

Monog.

Garb,

and Perm. Foram.

p. 99,^pi.vi,flgs.1-4.)

The

discovery ofthisformin thatfar-western region is interesting since it hashith- ertobeen found onlyinEngland,Ireland,

and

Scotland.

Another form

ofEndothyra, however, E.baileiji

{=RotaUa

haileyiHall)isfoundinthe lower CarboniferousstrataofIndiana.

NOTE ON

CRIOCARDltJITI

AND

ETHJYIOCARRIUiTI.

By

C.A.

^VHITE.

The subgenus

Criocardium

was

proposed

by Conrad

to receive the shellsofthat section of the

genus Cardium which

bear spines

upon

the interspaces

between

the ribs. Besides thetypeindicated

by him

(C.

dumosum) which

has"longslender spines

between

the ribs,"there are several

European

forms

which

are plainly referabletothis section,

among which

areG.productum

Sowerby

; C.

nioutoniamm

d'Orb.,

and

G. caroli-

num

d'Orb. All theseshells

have

distinct spines or tubercles, or both, occupyingallthe interspaces

between

theribs;those

upon

the anterior

and

posteriori^ortionsof thevalvesbeing longer

and more

conspicuous than those

upon

themiddleportion.

In adopting this

subgenus

Mr.

Meek

(U.S, Geol. Sur. Terr.vol. ix, 4toser.,p.169) referred toGriocardiumthe

Gardium

speciosum of

Meek

& ^Hayden,

supposingittobearspines or tubercles

upon

its intercostal spaces. In the

An.

Eep. U.S.Geol. Sur. Terr, for 1877, p.183, Itook occasionto statethat

among numerous

examplesof this shell

which

I

had

examined,

no

trace of either spines ornodes

was

detected,but that inplaceof

them

thetest

was

perforatedwithminuteholes.

Subsequent

examinationof portions of theshellofauthentic examples, having the naturalsurfacein abetter state ofpreservationthan

any

before

exam-

ined,

shows

thattliesesmallperforationsare perfect aperturesthrough thewhole substanceofthetest,theborderofeach one being distinctly