212 



REPORT ON THE STATE CABINET. 



Ym. CO. 



range of cellules. The simpler forms of this type are similar to the 

 two-stiped forms of the first series ; but in all those, whether of two, 

 four, or more stipes, the cellules are developed on the upper side, or that 

 side opposite to the initial point. In species like G. sextans, G. divaricatus , 

 Fig. 21. and others of this type, the cellules 



are on the lower, or same side with 

 the initial point or radicle. For these 

 forms I have proposed the name Dicrano- 



GRAPTUS. 



In Graptolitlms {Dicranograptus^ divari- 

 catus (Fig. 20), the fi-ond consists of two 

 simple uniserrate stipes ; and the same 

 is true of G. sextans, except that it is 

 united at the base for the length of a 

 single cellule. In G. fiircatus, the stipes 

 are conjoined for a distance of two or 

 three cellules above the base. 



In Graptolitlms {Dicranograptus') ramosus, 

 as shown in fig. 21, and also in fig. 18 of 

 Plate ii, the lower part of the stipe, for 

 a considerable distance, has a range of 

 cellules on each side, parallel with the 

 axis ; and becoming bifurcate above, it 

 presents two stipes or branches, each 

 with a single range of cellules. All the 

 species of this group have a peculiarity 

 in the form of the cellules, which will be 

 noticed hereafter. 



These species, in their mode of growth alone, present forms which 

 might be regarded as intermediate between the monoprionidian and 



