a18 THE CRINOIDEA CAMERATA OF NORTH AMERICA. 
Batocrinus poculum Mitzier and Gurtey. 
Plate XXX. Fig. 6. 
1890. Descr. New Spec. and Gen. of Hchinod., p. 34, Plate 6, Figs. 6, 7. 
Somewhat larger than the preceding species. Dorsal cup bulging out- 
ward, spreading but little above the costals; the base not projecting; plates 
nearly flat; suture lines obscurely grooved. 
Basals short, forming a rounded shallow cup, of which the upper margin 
is deeply excavated for the reception of the radials. Radials once and a 
half as wide as long, the suture lines toward the costals concave. Costals 
large for the genus; the first generally larger than the second. Distichals 
and palmars two, as large as the costals. Arm openings at right angles to 
the axis of the calyx. Arms twenty, arranged at equal distances; short, 
incurving, the tips slightly flattened. Interbrachials three to four, those of 
the second row comparatively large. Anal plate followed by three or four 
plates, and these by three others. Palmars in lateral contact apparently at 
all sides. Ventral disk shorter than the dorsal cup, depressed convex; com- 
posed of tumid plates. Anal tube long and heavy. Of the column only the 
upper part is known, which is similar to that in the preceding species. 
Horizon and Locality. — Same as last. 
Type in the collection of W. L. E. Gurley. 
Remarks. — This form is closely allied to our Batocrinus Macbridei, from 
which it differs in the more globular form of the calyx, in the more flattened 
and less spreading ventral disk, and in the greater length of the ventral tube. 
Batocrinus pistillus (M. and W.). 
Plate XX XI. Figs. 4a, b. 
1865. Actinocrinus pistillus —MuEK and Wortuen ; Proceed. Acad. Nat. Sci. Phila., p. 152. 
1868. <Actinocrinus (Batocrinus) pistillus— Mux and WortuEn; Geol. Rep. Illinois, Vol. IIIL., p. 472, 
Plate 16, Figs. 4a, 6. 
1881. Batocrinus pistillus — W.and Sp.; Revision Paleeocr., Part IT., p. 167. 
Calyx subpyriform ; the sides of the dorsal cup rising nearly vertically 
from the base to the summit of the radials, then expanding at first gradually 
to the distichals, and thence rapidly so as to place the upper palmars and 
post-palmars in a horizontal position. Plates highly convex ; especially the 
radials, the anal plate, and the first interbrachial pieces, which are trans- 
versely nodose. 
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