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THE 
AMERICAN GEOLOGIST 
Vol. XIV. JULY, 1894. No. 1. 
NEW AND LITTLE-KNOWN INVERTEBRATA FROM 
THE NEOCOMIAN OF KANSAS.* 
By F. W. Cragin, Colorado Springs, Colo. 
The [nvertebrata herein treated were collected by the writer in Kiowa 
;iik1 Clark counties. Kansas. 
r Pli'- "Belvidere section" referred to below, is thai shown in t lie ex- 
posures on the south side of the Medicine Lodge river, in the south- 
eastern part of Kiowa county, at Belvidere. It was lirst described in 
January, 1889; in the Bulletin of the Washburn College Laboratory of 
Natural History (No. 9, pp. 35, 36). It was more fully described in my 
article "On the Cheyenne Sandstone and the Nfeocomian Shales of Kan- 
sas." which was published in No. 11 of the same Bulletin (see pp. 75-79), 
and. with some revision, in Vols. 6 and 7 of The American Geologist. 
(See Vol. 7, pp. 27> and 26.) 
The "Bluff Creek section." described also in the article "On the 
Cheyenne Sandstone and the Neocomian Shales," etc.. is in Clark 
county on the east bluff of Bluff creek, about two miles below the old 
Yanhem postoffi.ee. 
(? NEREIS) INCOGNITA, sp. nov. 
Plate I, figs. 20-22. 
The specific name, incognita, is proposed as a convenient 
designation for the large, apparently nereid, worm that in- 
habited the sandy beach of the Conianchean sea of southern 
Kansas, and the easts of whose burrows (part of one of which 
is shown natural size from above and in cross-section in figures 
21 and 22 of Plate I) occur commonly in Kiowa county in 
No. 5 of my Belvidere section, and occasionally, at least, in 
(lark county, in the earthy or saccharoidal sandstone which 
constitutes No. 4 of my Bin II" ('reek section. 
*Advance sheets distributed Ma\ 30, 1894. 
