4 
EXPLANATIONS OF PLATE VIII. 
GRAPTOLITHUS OCTOBRACHIATUS, page 96. 
Fig. 1. A symmetrical frond preserving parts of all the stipes, two of them apparently 
almost entire ; several of them had been abruptly bent before being im- 
bedded in the stone. 
2. A frond preserving eight stipes, but without a disc. The specimen does not afford 
any evidence that a disc has ever existed. 
“ 3. A frond with small disc and somewhat slender stipes. One side preserves the 
usual character of four stipes, while the other has but three. 
“ 4, A frond which is abnormally developed ; one side exhibiting the four stipes with 
the disc, while on the other side the funicle is apparently extended in a single 
stipe only. 
