240 GEORGE H. GIRTY 



my F. secalica, namely, it is more inflated and has the septal walls 

 more strongly folded. In evidence of this statement Say gives the 

 length of his typical F. secalica as 0.3 inch and the breadth as 

 yV inch, so that the ratio is 3 . 6 : i , whereas von Staff gives the ratio 

 in his form as 2.5:1 or 2:1, with a ratio of 3.2:1 and 1.6:1 in 

 extreme forms only {op. cit., p. 496). As to the folding of the septal 

 walls, Say describes the shell as composed of tubes or siphons placed 

 parallel to one another, a phraseology indicating, I should think, 

 chambers uninterrupted by foldings of the inclosing walls. How- 

 ever, Say probably did not study the form by means of sections, and 

 may have based his statement partly on the appearance of the 

 external suture which is always straight, no matter how much the 

 septal walls are folded within the shell. 



Dr. J. W. Beede^ was the first one to revive Say's F. secalica 

 and give figures of it. He figures numerous specimens in side view 

 and also one in thin section (axial). He does not, however, state 

 whether the figures are enlargements, nor does he give the localities 

 from which the originals were obtained. The figure representing 

 the thin section is clearly an enlargement, and I suspect that some 

 of the others are also. The largest has an axial length of 18 mm., 

 much greater than that of any Fusulina which I have seen from 

 Kansas. The proportions vary considerably in these figures, but 

 with few exceptions they range between 3.6:1 and 3.2:1. This 

 then is a more slender shell than von Staff's F. secalica, and if the 

 figures are of natural size, a larger. It has much the same propor- 

 tions as my F. secalica and as Say's original F. secalica, but it may 

 be much larger. 



The figure showing a thin section is considerably less slender 

 than the others, and has more the shape of von Staft"'s F. secalica. 

 Its proportions are almost exactly as 2 : i . From this fact and from 

 the bluntness of the ends (the other figures are terminally some- 

 what attenuated) I infer that this section does not exactly follow 

 the axis but is somewhat obhque to it, though passing through the 

 initial cell. The septal walls are much simpler than in von Staff's 

 F. secalica (cf. Fig. 3, PL 15, of his 191 2 publication), but, on the 

 other hand, they are represented as porous, a feature apparently 

 characteristic of the latter. 



' University Geological Survey of Kansas, Report, Vol. VI (1900), p. 10. 



