GRAPTOLITES. 135 
CALLOGRAPTUS SALTERI, Hall. (a. s.) 
Plate XIX, figures 5-8. 
Description.—Frond spreading or flabelliform above. Stipe below the 
branches and base, unknown. Branches numerous, undulating, bifurcat- 
ing: divisions very little diverging ; branches closely arranged, the space 
between them being usually less than the width of the branch. Non- 
celluliferous face smooth, or obscurely and interruptedly striate ; cellu- 
liferous face with the cellules alternately on opposite margins, producing 
swellings of the branch at these points, and an undulating or tortuous 
direction. A few of the branches astomose, or an are sometimes con- 
nected by a short transverse bar of the same width as the branch. This 
does not appear to be a constant character. 
This species has the same general form as C’ elegans ; but the branches 
are wider and less diverging, and obscurely or not at all striated. The 
zig-zag direction of the branches forms also a distinguishing feature. The 
stipe, which is not preserved in the specimens examined, was probably 
short, branching from near the base. ‘This species occurs with C. aleg Jans 
and its associated graptolites mentioned above. 
EXPLANATIONS OF Figures or CaLLoGraptus Sauter, Hall. 
Puate XIX. 
5,6. Fragments of two distinct fronds; one showing the celluliferous side, and 
the other the non-celluliferous side. 
ue An enlargement from the non-celluliferous side, showing a few transverse dis- 
sepiments at irregular intervals. The figure has the same degree of 
enlargement as fig. 3 of C. elegans. 
8. A farther enlargement of a bifurcating branchlet, showing the cell-apertures. 
formation and Locality.—Quebee group ; Gros Maule. 
