:^rAmi.\\i) (ii;oi,()(ii('Ai, >i;uvi;y :;;{.") 



Tcstnlfiriii xiihKiii/iihi/ii Ku:l,mt, lsr,7, Neiie.s .hilirl). liir Miri. flc, p. L".t:!, |.|. xii. 



tisTB. 15, Hi. 

 Tijliildi-iti siihiitii/iihitii Hiiic-r, IK'.ts, Hull. Aint;r. I'hI. So. 10, p. 20. 



Desrri/ilinii. — The test of '/'r.rhiliiria siilKim/iihiln closely resembles 

 T. (/niiiini. Kill it is scpjinitcd rroiii lluit s|K'eies hy the more nearly 

 strai<i-lit siiliircs, nmrc iinuiil;!!- cdiii'.-. jiiid in ty|iical foriiis hv its lartrcr 



llllllllii'l' dl' (■||;lllll)CI>. The dill' >|iccillirll iif lhi> |'<iMll I'miii (he llruipk"- 



Instate near Seal l'lca>ant. while it may |iossil)ly Ije considered as a 

 variety nf llie nidic w i(le.-|iread 7'. jirnnini dilTiTv .so niarkcdlv frum the 

 coniiiKin I'di'iii tliat it has heeii [ihiee(| with the present species. 



d'Orhiii-ny's s])eciineiis eanie ffoiii thr .Miocene of Austria, Egger's 

 from tile .Miocene of Orteidntfu'. 



Occiinrncr. — At^riA l-'oiiM atiox. Hi'ooks Estate neat' Seat Pleasant. 



Colletiiuii. — Johns llojikins ^ni^■e^sity. 



Genus SI^IROin,E(:TA Ehijiiherg. 

 SpIEOPLKCT.V t'l.ARKl Bagg. 



Plate LXll, Fig. L 



tSpirophctd chirici Bagii', 1S'J5, Jolius Hopkius Univ. Circ, vol. .\v, i>. 5. 

 Spiroplevta chirki Bagg, 189(3, Bull. 141, U. S. Geol. Survey, p. '.M. 

 Spiroplecta ehirki Bagg, 1898, Bull. Amer. Pal., No. 10, p. 20, pi. i, tig. 1. 



Description. — Test elongate, textnlariform. finely arenaceons. finnly 

 cemented; compressed strongly, lateral mar>:'ins shai'p and very slightly 

 lobed; surface of shell rough, of a dull gray color; chambers at first 

 planospiral then biserially arranged with nine and ten respectively on 

 each side; aperture a median arched opening; length. 0.53 mm.; breadth, 

 0.20 mm. 



Previous to the author's discovery of the above Foraminifera the 

 genus Spiroplecta has never been reported from the Tertiary formation 

 so far as kno"wn. It has, however, been described from the Cretaceous 

 of Mississippi (Ehrenberg), and of Minnesota (Woodward and Thomas), 

 and from the Gault and L'lialk of England (Parker and Jones). Brady 

 reports its occasional presence in existing oceans confined to three spe- 

 cies, 6'. annectens, S. hiformis. and »S. americana, the latter found living 

 only in one locality off Eaine Island, Torres Strait at the depth of 155 

 fathoms. 



