13571902. No.32] FOSSIL l“.\['\
‘B, Qt
specimen comes extranrtliimrily Hour In Sclmcllerlulln inlerclr’iuln l|.u.i.. u very common specics in the ltlanlins at New Yul-tr. The characters ml the surface agree completely with tlmsc dost-rihcd and depicted ix'tnn lhix species. “'53 lind a series at well murkml. I'uunded radiating stria'. with new ones appearinsr as we pass nearer tn the lrmit. The distance he- tween the rihs equals their width, These striae are rmssml hy very numerous tine concentric lines. \‘laltllt’. to the naked cye in a good light.
The Chfll'at ers by which this lurm tlit'lcrs lrmn S. inlz'rslriuln are chiefly the occurrence ol :1 shins. sccumlly also hy a less clcvalcd heak.
Occurrenc
B, lower part. Reindeer Valley.
Pentameritlae, Gypidula HALL. Gg/liidnla coal/numnwis var. prognosticn S uvtzumrr. Pl. VII. lig.
1913. Gypidulu coeymanensic Starter-[11M var. prognoslrim Sizut'nuan'r Geol. Survey at Maryland, Low. Devonian, p. 344, pl.ti‘2. tigs. 9—11. A single and not quite complete ventral valve of a rather small Gypidula agrees with the more slender types at this variety. charac- teristic of the Keyser member 01' the Maryland Lower Helderhergian. In Proteswr Snat'uuam's collections in New Haven l have heen able to
examine Mary]and-specimens for purposes of comp 'isnn.
The length ol the specimen lrum the beak to the anterior margin is 2 rm.: greatest width,i not «piite complete, —amounts to 1.5 cm. 011 the middle part of the valve run a series of longitudinal plications «it rlillereut strength. They are most rnnspicunus in the anterim‘ part, dis- appearing towards the beak.
Occurrence: B. lower part, Reindeer Valley.
Telotmnmfa. Ellynclmnellidae. Sleuuchisma Coxmn. b'lenochisma deckm‘ensis Wri 1 en \ar. urolicn nor. vm'. l’l. Vll. tig. 77%. one (It the iew [arms that are really well represented in thc
This . material, vccnriing as it dues in a wry great numhcr nl line, tree speci- ‘ gl'eultv, the lurgcst specimens having a length (It
mens. The size 16min. a width at If). amt a thickncss at 10 771:2 min. the thick!)th
\‘arving greatlv in (liliex‘enl specimens. The numlwr nt' plicatinns m the
