C5 
Order, Belemnoidea 
Family, belemnitidae 
Genus, Cylindroteuthis Bayle 1879 
Cylindroteuthis themis sp. nov. 
Plate XXIII, figures 1, 2 
Rostrum, cylindroid, very blunt pointed. Dorsum and flanks, 
smooth, rounded. Venter, straight, flattish, bearing a broad, shallow 
canal which is deepest near the apex and becomes so shallow as to disappear 
15 mm. from the apex. Taper, very slight, except in the apical region. 
Axis, slightly eccentric. Phragmacone, very nearly right conical. Septa, 
alveolus, and proostracum, not preserved. 
Dimensions 
Vertical diam., at apex of phragmacone 10 mm. 
Ventral radius “ “ 3-5 
I^ateral diam. “ ** 10-5 
Axis, apex of phragmacone to apex of rostrum 40 
Apical angle of phragmacone, lateral 21 degrees 
Locality. Associated with Entolium vulcanicum, on the west shore 
of Harrison lake, 1,820 yards north of Harrison River point. 
Name. Themis, of Greek mythology. 
Cylindroteuthis haculus sp. nov. 
Plate XXIII, figures 3, 4 
Rostrum, very long, almost perfectly cylindrical through most of its 
length. Resembling ‘^Belemnites” tehamaensis Stanton and certain Russian 
species of similar date, such as ^‘Belemnites” obeliscoides Pavlow and 
Lamplugh, but differs from some of these in its very gentle taper, from 
others in its almost perfectly circular cross-section. The holotype has a 
nearly right conical phragmacone, containing thirty-three chambers and 
occupying two-fifths of the length of the alveolus. The alveolus is slightly 
more than one-fifth the entire length of the rostrum. 
Dimensions 
Vertical diam, at apex of phragmacone 14 mm. 
Ventral radius ** “ 6*5 
Lateral diam. “ “ 15 
Axis, from apex of phragmacone to apex of rostrum, from 
a composite specimen 230 
Phragmacone, length 20 
Alveolus, length 50 
Apical angle of phragmacone. 15 degrees 
Locality. Zone of Aucella canadiana, 350 yards from shore and 1,400 
yards north of the mouth of Deer creek. 
Name. In allusion to external form. 
