C. Dewey on Caricography. 23 
are rounded at the top, and while their exterior flanks are more 
precipitous than the interior ones, they swell out opposite to 
each transverse furrow, thus giving to the site ridges a beaded 
or knotted aspect, each bed of the series standing opposite a fur- 
row. The highest part of these lumps is about three lines above 
the bottom of the furrows, and about a line anda half above the 
surface on which the track is impresse 
My naturalist friends to whom I have exhibited the speci- 
mens, appear disposed to consider the tracks those of some spe- 
cies of gigantic mollusc, and I am given to understand there is 
3 
SE ee aa Pre OMe gee eee eee 
w living some small mollusc, whose track presents a. series of 
transverse ridges and furrows, witho ut, however, the longitudinal 
ones. From the resemblance of the track to a ladder, the name 
proposed for it is Climactichnites Wilsoni, the specific designation 
being given in compliment to its discoverer, Dr. Wilso 
Art. IV.—Caricography ; by Prof. C. DEWEY. 
(Continued from vol, xxix, p, 348, Second Series.) 
No. 265. Carex Emoryi, Dew. 
Spicis staminiferis ternis oblongis cylindraceis terminalibus, 
inferioribus brevioribus sessilibus approximatis et densifloris ; 
pistilliferis quaternis longo-cylindraceis densifloris sessilibus foli- 
aceo-bracteatis apice staminiferis, infima omnino fertili subre- 
mota; fructibus distigmaticis ellipticis basi teretibus brevi-rostratis 
ore integris squama ovata oblonga subacuta duplo longioribus. 
Culm erect, scabrous above, triquetrous, with bracts long and 
leafy, surpassing, and scarcely sheathing it; the upper stami- 
nate spike clubform and short-pedunculate, the other two short, 
contiguous and sessile; the three upper pistillate spikes staminate 
at the te the lowest wholly yea nearly sessile and slightly 
sheath all cylindric, erect, a out 1% to 2 inches long ar 
dena flowe red; stigmas two; "rat narrow-elliptic, ap 
below, flattish, obovate and apiculate or short-rostrate, with 
fice entire, and scale ovate- -oblong acutish and half the length 0 of 
_ jor Wm. H. Emory, United States Commissioner on the -U 
the fruit. Whole plant glaucous or pale 
On the Upper Rio Grande; Bigelow. Sena in honor of ee 
States and Mexican Bounda Survey. ae 
This and all the he 2g this seas were described. in ‘the 
_ ii, part 1, pp. 229-232 of the Mexican 
: very important Botanical Report of Prof. Torrey, LL.D., in vol. 
: Boundary: Survey, pub- 
_ lished by ongress, 1859. 
