58 Proceedings of the Royal Society of Victoria. 



The other species to which it is imdouljtedly related, are 

 Graptolithiisjiexilis, Hall, G. rigiclus, Hall, and G. ahn.ormis, 

 Hall, of the Quebec Series, but it is easily separable from 

 •each of them. 



These five species agree in that the hydrothecal-bearing 

 stipes are subdivided, and that there is no central corneous 

 disc present. 



I have to acknowledge my indebtedness to Mr. T. S. Hall, 

 M.A., for suggestions on the subject matter of this paper, 

 and to Mr. W. S. Strettle for assistance in quarrying out the 

 specimen. 



EXPLANATION OF FIGURES. 



Plate VI. 



Fig. 1. — Temnograptus magnijicus, one-seventh the 

 diameter of the original, drawn from a photo- 

 grapliic reduction. 



Fig. 2. — Portion of the stipe bearing hydi'othecre (enlarged). 



Fig. 3. — Central portion of polyp-stock, natural size. 



