C. M. Wheatley on Mesozoic Red Sandstone, &c. 41 
Var. densi-spicata, Dewey. 
Dioica; spica staminifera e spiculis 5-8 ovatis 8 sggtegatis composite 
cum squamis lato-ovatis oblongis obtusiusculis castane margine albis ; 
ciali i 
congestis, inferne paulo remotis ramosis vel divisis et arctis, densifloris 
fructibus distigmaticis ovato-lanceolatis rostratis bifidis (immaturis), 
squama lanceolata castanea dorso viridi m argine alba paulo brevioribus ; 
culmo 3-5 unciali erecto laevi rigido, foliis planis vaginatis subradicalibus. 
Culm 3-5 inches high, smooth, rigid, erect and shorter than the flat, 
sheathed and subradical the and wholly pistilliferous ; spike 1-14 inch 
long and half inch broad, thick, composed of 15-20 ovate spikelets 
Jackson’s Holve on Snake River, or Lewis’ Fork of hon a on 
gravelly knolls, June 15, 1860, 6000 ft. alt. — De. F. Hayden. 
iffers from C. Nuttallii, Dew, (Sill. Journ., vol. wii 1842,) in its 
spike and inflorescence, and its r relatively broad lea es, as well as its fruit 
being much less conyex and ventricose. 
Art. [X.— Remarks on the Mesozoic Red Suvideionis Be the Atlantic 
Slope, and notice of the Discovery of a Bone Bed therein, at Phe- 
nixville, Penn. ; by CHARLES M. WHEATLEY, M. im: 
ok before the coisa Sey of Arts and Sciences, Feb. 20, 1861.] 
etween the Triassic and Liassic ree ing a separate 
group containing like — beds, its own peculiar £0 fossils. No 
Phila, 9 Fas une, 185 a) te be “not propery : Thecodont reptile 
ts teeth are insert 
Au. Jour. Bor. —Srconp Serres, VOL. XXXII, No. ethane 1861. 
6 
