DENDROID GRAPTOLITES OF HAMILTON, ONTARIO, 



53 



Doctor Giirley has the following notes based upon a specimen (text 

 fig. 68) referred to this species by him : 



The (fragmentary) polypary consists of a main stem the sides of whieli are 

 beset witli spinular processes similar to those found in 

 Inocaiilis. The branching is at an acute angle (about 

 35°). The main stem is about O.S mm. wide. The 

 spinular processes are 0.5-0.6 mm. apart (too few are 

 visible to state the number in 25 mm.). Besides these 

 processes two others of a different character, 1 mm. 

 long, are visible. They belong to the class regarded 

 by Spencer as rudimentary branchlets. Both stem 

 and branches are longitudinally striate, many distinct 

 chitinous fibers being visible. 



Horizon and locality. — Niagara limestone 

 and chert, Hamilton, Ontario. 



PlesioUjpe.—Q.^i. No. 55315, U.S.N.M. 



INOCAULIS DIFFUSUS CRASSIRAMUS Gurley, new variety. 

 Plate 5, figure 2. 



Fig. 68. — Inocadlis dif- 

 Fcsus Spenckr. Speci- 

 men DESCRIBED BY GCR- 

 LEY. 



Fig. 69. — Inocaili.s diffusus crassira.mus, new variety. Holuiype. 



^ One specimen, which, judging from Spencer's figure and descrip- 

 tion, seems to have the habit of /. di/fusus, is described by Gurley as 

 a variety as follows: 



Polypary consisting of numerous branches not widely radiating. 2 mm. wide 

 ad max.; the smallest seen about 1 mm. wide; longitudinally striated by very 



